[ABDL, Enema play]

Everything seemed to be quiet during this wonderful little evening at the naval base. Cruisers, destroyers, carriers and submarines were all docked, and the girls that embodied them were all asleep in their beds... All except for one, who just happened to have the worst things in mind for one of her fellow vessels.

The white-haired Akizuki-class destroyer girl, Suzutsuki, was sneaking around in the hallways of the base, lugging around a bucket filled with freshwater from the tap, and a strange looking pump that one would normally use to make it easier to clear out a rectal blockage. It was an unusual thing to be carrying at this hour of the night, but the girl had thoughts flying around in her head... Devious thoughts, ones that only the heaviest of cruisers normally would.

See, when you're the third in a line of sister ships, you tend to end up the one that's looked over the most. There's the eldest, Akizuki, which their class is named after. Teruzuki, the second eldest. Herself as the second youngest, and then Hatsuzuki, the youngest. All of her sisters are treated with a certain amount of respect, and in the case of Hatsuzuki, she gets treated with special care because she's the smallest of them all... leaving poor Suzutsuki as the one to pick up the slack, and be the least impressive of the four.

The way that Suzutsuki planned to make up for this was simple. If Hatsuzuki loved being given special treatment as a result of being the youngest among them... then she'd gladly help her live up to that image, with all of the bells and whistles that she might've been trying to avoid. The most important of those of course... was a child's toilet troubles.

The white-haired destroyer girl slowly opened up the door to the room where Hatsuzuki and several other destroyers were sleeping. The base had grown too packed with girls as a result of the admiral's love for them all, so they had begun to share rooms out of necessity... And while that made it hard for the slightly older destroyer to make her move, it made it all the more exciting as well. She had to make absolute sure she didn't make more noise than necessary as she made steps on her tippy toes, right over to Hatsuzuki's bed.

The black-haired younger destroyer was not the soundest of sleepers, resulting in her blanket being tossed off the bed, and the young girl laying on her front in nothing but her undies. This was perfect for Suzutsuki's plot, and once she gently put the bucket full of water down on the floor, she reached onto the rim of the smaller girl's panties before pulling it down, exposing the pink edges of not only her cute little pussy, but also her tight and tender anus. The one thing that Suzutsuki was looking to exploit, as evident by the thinly piped pump that she had brought with her. Perfect for an impromptu enema that would definitely loosen up her younger sister's bowels.

The younger sister softly rolled onto her side, snoring gently as her older sister's movements were done in such a careful manner that they weren't enough to stir her from her current state. Suzutsuki took a deep breath, and then gently slid the little piece of black tubing into Hatsuzuki's tightly shut hole. It took a little force, enough to make the smaller girl tremble and shiver, a subtle moan even leaving her lips as the tube nestled within the walls of her colon. It had to be secured, otherwise what came next would blow Suzutsuki's cover too early.

With the harder part of the preparation for the 'punishment' over and done with, the white-haired girl dipped the other end of the elongated tube into the bucket that sat on the floor, and then wrapped all of her fingers around the ball-shaped part of the tube. With a soft squeeze, the water down below started to bubble ever so slightly... And as she eased her grip, the air that entered the ball caused a vacuum effect. Water flushed its way up the tubing, straight into the poor hole that the other end was stuck inside of.

Despite the cold shivers that ran through Hatsuzuki's body as she felt the water rushing into her butt, she didn't wake up. Suzutsuki was in luck, she had been just careful enough that nobody, not even the victim of her punishment, would be able to stop her in the act of giving her an enema. And so, she squeezed down on the ball once more. The process of air blowing out of the tube, and then sucking the water back up with it once the girl released her grip continued for a few minutes, until there was barely any water left in the bucket.

The white-haired destroyer shone a wicked grin as she delicately removed the tubing from her sister's butt, a little droplet of water dribbling out of the slightly widened hole to show how jampacked her anus was at this point. The slightest wrong movement, and Hatsuzuki would wake up with an accident in bed. And that would just spoil the fun. Soiling her sheets would be nothing compared to what her sister had in mind for her. With this in mind, the older destroyer gently slipped her underwear back on and carefully draped the covers back onto the sleeping girl, before coiling the tube that she had used to administer the enema up and dumping inside of the bucket. 

Just as quietly and as carefully as the third sister had arrived, she left. And until morning came, Hatsuzuki would be stuck with a blush on her cheeks, her dreams having turned quite dirty as a result of her sister's interference. This at least kept her from making any excessive moves that would result in her enema activating prematurely... but it would mean that the humiliation that was to come would be ever sweeter for Suzutsuki.

---

Today really wasn't Hatsuzuki's day. Not only had she woken up in a mood she hadn't ever been in, but ever since she tried to figure out why her panties were wet, she's had this really bad cramp in her stomach. Almost as if she had swallowed something that didn't want to come out, no matter how hard she tried. Worst of all, she hadn't gotten a good chance to go to the bathroom and try to relieve herself, as she had to go sortie with her sisters. At least it wouldn't be a critical mission, just a little exercise.

Just as the young black-haired destroyer started to breathe a sigh of relief, she felt her back being slapped, causing her to seize up as she felt the blockage down below shift ever slightly. 'Nononono, not now, let me go to the bathroom...!' Hatsuzuki thought as she turned to look at the arrival, a massive blush covering her face. 

Of course, the one that had slapped her was the culprit behind it all. "Why, you look awful today Hatsu-tan. Are you running a fever? Do you need a few minutes before we head out to clear things up?" Suzutsuki chimed in a tone that really couldn't be interpreted as any less than teasing. It was as if she knew exactly what was up with the younger girl, but she didn't let the little victim figure it out just yet.

"I... W-Well, actually, I kinda need to go use the bathroom..." Hatsuzuki replied earnestly and naively, assuming that she might be granted that little bit of respite from the arduous sensation in her bowels. She didn't even pick up on Suzutsuki's specific choice of words making her out to be younger than she really was.

"Really now? Why might that be? Surely you can hold it in until we're back from the sortie. Won't take too long, it'll just be Aki-nee and Teru-chan cleaning things up, you can just hang out in the back and keep watch so we don't get shelled." Suzutsuki chimed and giggled as she rubbed the nervous little girl's back, the teasing venom dripping from every syllable. Oh, Hatsuzuki was so easy to fool.

"B-But they always take so lo-" The younger destroyer tried to object, only to be cut off by the sound of the intercom buzzing to life.

"DESTROYERS HATSUZUKI AND SUZUTSUKI, REPORT TO DOCK 3 IMMEDIATELY. FAILURE TO COMPLY WILL RESULT IN A REPRIMAND."

Right as it had delivered its message, it shut off. The girl who kept track of the announcements never was the most elaborate type, always delivering orders in such a sparse way. Still, it meant that the girls had no time to sit around.

"Well, you heard what the lady said. I'll see you in the docks, Hatsu-tan." Suzutsuki said right before sprinting off, leaving the smaller girl to her own devices as she cackled within her mind. She didn't even need to tease her any longer, the fact that they had to rush would leave her ripe for an early accident.

"Wait, Suz-" And just like that, Hatsuzuki was all by her lonesome. Sure, she could go hurry to the toilet and hope that she would be able to get rid of her blockage in time, but there didn't seem to be a point to it now. She'd get reprimanded and just end up in a worse situation. The little black-haired girl bit her lip and slowly made her way down to the docks, being ever so gentle in her steps to not make the problem any worse.

Unfortunately, just the mere act of walking made it ever so excruciating. It felt like whatever was trying to slowly and painfully free itself from the insides of her colon was shaking wildly, no matter how soft her step was. Her vision was getting blurry from the sensation, which only worsened as her sole met the ground. She had to endure, she just had to.

It felt like her body was about to give way and just force her to collapse as she kept walking, to the point where she started to disassociate. Her mind was taking a break to try and deal with the sensations her nerves were sending, while her body just walked at a brisk pace. Eventually, she'd reach her destination, and then she could take a moment to relax and gather her bearings. After all, moving about while out at sea was a breeze compared to using her legs in this state.

Suzutsuki tapped the side of one of her cannons as she waited for the star of the upcoming show. 'She is taking her sweet time getting down here... She did not mess herself, did she?' The whitehaired girl thought to herself before her smile crept right back on her face as she watched the younger sister enter the docks, after taking far too long. "There you are, slowpoke! Come on, Aki-nee and Teru-chan are waiting for us, we gotta head out!" The older of the two ship girls shouted.

This prompted the half-aware girl to nod absentmindedly as she stepped onto the surface of the water, lumbering over to her sister with a dull look in her eyes. All of her fortitude went into making sure that she wouldn't mess herself, which meant that she didn't even see anything as she was getting outfitted with her equipment. The only thing that made her aware was the fact that preparations were complete was another pat on the back by her sister. "U... Uhuh. Hatsuzuki, departing..."

This time, Suzutsuki was the one left behind in the dust as Hatsuzuki sped off, her posture firm as the lack of a need to move her legs excessively made her able to regain some semblance of focus. "Well then, she's just about to be ready. Let's see her catch up to everyone..." The white-haired destroyer smirked before announcing her own departure, leaving the base free of the antics of the sisters for just a little while.

---

Hatsuzuki's breathing was warm. The air in front of her fogging up ever so slightly with every drawn out breath. She was ever so slowly returning to a stable state of mind, evident by her eyes regaining their color. "Okay... Okay... Just..." The little destroyer said to herself as she started to wobble a little. Regaining control of herself left her a bit disoriented, but this was to be expected. Even with the cramp in her stomach, which was starting to die down a little, she had managed to get out to sea. If she could just do as Suzutsuki suggested and stay back, then everything would turn out alright.

"Hatsuzuki, you and Suzutsuki are late. What's been taking you two so long?" She heard a voice call out, recognizing it as her sister Akizuki, the black-haired elder sister followed right behind by Teruzuki. "We thought you two had forgotten to depart, or maybe you both overslept, so we were on our way back to make sure nothing was wrong. Looks like we were just a bit impatient." Akizuki said, seemingly a little displeased with herself for thinking so lowly of the youngest in their class.

"I-It's okay, Aki-neesama, I didn't mean to worry you-" Suzutsuki wanted to respond, before Teruzuki cut in with a little giggle.

"Suuuure, we had thought that. It totally wasn't just Aki-nee that was worried sick about her youngest sibling, thinking something horrible might've happened to her during prep time. You're a real piece of work, Nee-san, trying to lump me in with you." Teruzuki lightly elbowed the older girl in the side, prompting her to start fuming and steaming while the younger kept giggling like a giddy schoolgirl. Teasing her about how worried she was seemingly struck a nerve.

"You know that the Admiral would be in an awful mood if one of his Kanmusu ended up in poor condition, I was only thinking about her for the sake of him!" Akizuki tried to defend herself, but it was for naught. The way she reacted to the teasing meant that it was all true, evident of how much the youngest sister meant to her.

"Aki-neesama... You really were worried that much about me... That's a relief..." The little girl said, almost brought to happy tears. It was almost as if she could forget all about the problem with her colon. As if she could just carry on with her day and get to a bathroom once they made it back home to the base.

As if being the imperative word. Her eyes started to widen as she realized that her nerves relaxing from the happiness was finally letting the mess within her colon nestle its way free of its confines. The black-haired youngest sister clutched her stomach, rapidly muttering "not now not now not now!" in the quietest tone she could muster, her breathing growing rough and labored as she tried her best to keep it all in.

"Hatsu-chan...? What's the matter, what's hurting? Please, tell us right now!" Akizuki noticed her troubled sister, prompting her to kneel down and grab ahold of the girl's sides, her furrowed brows conveying her worry with a single look on her face. "We can head back if you're in any danger of hurting yourself, just tell us what's wrong!"

Teruzuki let Akizuki take control of the situation, crossing her arms as she tapped the finger against her elbow. She was smarter than she looked, and if she didn't know any better, a certain somebody had been up to no good... A little smile crept on her face as the gears within her noggin were turning. Maybe things were about to get interesting. Especially as she saw that certain somebody coming closer to where they were gathered. "Oooooiiii! Suzu-chan! Over here!" The second-eldest said as she waved her arms in the white-haired girl's direction, directing her towards them.

The second-youngest slowed down as she approached the group of three, putting on her best fake shocked expression as she possibly could. "Hatsu-tan? What's the matter, still having problems?" She said as she got closer, approaching the little girl with the worst of intentions.

"Still? Was she having trouble before you went out to sea?" Akizuki questioned the recent arrival, the younger girl slowly getting ahold of herself again with the help of her sister's comforting grip. She could do this, she just had to keep to the back of the group when they were going to set off together, and everything would be fine as long as she could just keep it all inside.

"Mmmhm. She wasn't feeling the best, and she needed to go to the bathroom, but a certain somebody decided to force us to leave. She should've gone to the toilet before she left her dorm room." Suzutsuki replied and explained, before turning towards the younger sister. "Isn't that right, Hatsu-tan?" The elder of the two youngest chimed before patting the girl's back, just roughly enough to set her plan in full motion.

For a second, the entire sea was silent. Then, a loud brassy sound echoed across the horizon, and then a couple of loud sobs followed.

She had worked so hard to keep herself from pooping her panties, and yet here Hatsuzuki was, doing exactly that. The moment that her sister had slapped her on the back was the moment she lost all control, and a massive lump of excrement forced the rim of her ass to spread apart as it plopped straight into the underwear she called panties. That wasn't everything that would cause her underwear to sag, oh no. 

The contents of the enema that her sister had forced into her were flowing out with the widened hole she called an ass, the slurry of shit-water soaking the rest of the stretchy underwear and causing a foul smell to emanate in the nearby area. The liquid mixture of poop and freshwater dribbled through the fabric of her underwear and into the sea below, giving a small brown tint to the spot where she stood. Her pantyhose wasn't left in the best condition either, as the brown stream washed its way down her thighs, letting a small trail of black discolor it all. It was... The worst. The absolute worst feeling. It felt like she could collapse onto her seat at any point and just sink to the bottom of the ocean, but if she did that, it'd just make things worse. Especially since it'd just spread the mess around more...

And all she could do was wail like a big, overgrown baby that had just shit herself. There was not a single shred of dignity left in her, only a distraught child hoping for comfort. Something that was thankfully given to her by one of her older siblings, Akizuki to be specific. "Sssssh. Sssssssssh. It... It's going to be alright, Hatsu-chan. You just... You just had an accident, nobody'll have to know..." The girl's older sister muttered, her almost hollow tone sounding like she couldn't believe what had just happened. In a sense, Akizuki was just as shocked as her younger counterpart.

Suzutsuki did her best to hide away her smirk, dripping with nothing but joy at finally seeing Hatsuzuki debase herself with an accident that she had no chance of deflecting. She had soiled herself to an abnormal degree, only somebody that was on the brink of developing incontinence would have shat herself this hard. Or, rather, that's what Suzu would've done, if not for the fact that her older sister gently tugged her to the side, pulling he away from the sad scene while their other sisters were busy with their emotional turmoil.

"Well well, looks like my little hunch was correct. I see my little sibling's been a really naughty girl, setting up little Hatsu-tan to make her seem even younger than she really is. Something along those lines?" Teruzuki chimed, making sure to not be too loud so that the other two would notice their private conversation. Before Suzutsuki got a moment to reply, her sister placed a finger on her lips. "Ah-ah, Teru-nee's talking, you know. Now, unless you want Aki-nee to find out about your plan. I'm sure she'd loooove to take out her frustrations on you."

Suzutsuki was left speechless by the fact she had been found out that easily, and blackmailed immediately afterwards, prompting her to sigh in defeat. Guess it wasn't going to be that easy to make everyone think Hatsuzuki was a baby. "Alright, Teru-nee... What do you want from me to keep you quiet?"

"You're going to do the same thing you did to Hatsu-tan, but you're going to do it to all of the Etorofu-class girls, as well as little Hiburi and Daitou. Just a little bit of all that, and we'll be square. That's more than fine for a pervert like you that wants to be more important than her little sister, isn't it~?" As Teruzuki laid out her plans, it became very apparent where Suzutsuki got her wicked streak from, something that caused the latter to sweat nervously.

"Seven more enemas... Teru-nee... You're crazy... But I'll do it as long as you keep your mouth shut." Suzutsuki gave up and silently shook her sister's hand, going along with the agreement as she slid over to the troubled sisters and then knelt down by the displeased pooper, slowly rubbing her back. "Listen to Aki-neesama, she knows what she's talking about. You're going to be alright, Hatsu-tan. Promise."

Despite her attempts to cheer her little sister up, even if the attempt was merely done to appease her own wicked sister's sinister plot, it wasn't enough to make Hatsuzuki dry up her tears. Akizuki didn't have much luck either, sighing as she gave the smaller girl a kiss on the forehead and looked at Suzutsuki with massive worry in her eyes. "Suzutsuki. Go back to the base and dock with Hatsuzuki. Make sure she gets cleaned up, and that the admiral gets to know about this. She can't go on forever without knowing that she's had problems like these."

What the little girl could hear through her tears and sobs, plus the very audible sounds of the mess in her panties squelching as it did its best to pour down her thighs, made her eyes shoot open. "N-No, please don't tell him, this was just one time! I-I just had a stomach cramp, that's all!" Hatsuzuki protested loudly and abruptly, tears still streaming down her cheeks.

Her beloved eldest sister shook her head however. This wasn't enough. After a mess of that magnitude, any and all trust that Akizuki had in the younger girl being able to take care of herself was shot. "Hatsuzuki, listen to me. Go back home with your sister, and be as honest as you can to the admiral about your problem. He'll understand. You'll have to understand that in a real sortie, an accident like this could get you killed, and I don't want to lose you..." As the eldest of the four spoke, tears started to stream down her cheeks. For such a tough exterior, she certainly let the waterworks open early.

Hatsuzuki could only stare at her older sister and role model, conflicted internally. On one hand, she really didn't want to reveal her problem to anybody else than her sisters, because they at least understood that it was just that, an accident... But at the same time, watching Akizuki like this was murder to her heart. She couldn't bear to hurt her in this way. The little girl swallowed her childish pride and nodded, grimacing ever slightly as she could feel the mess still squelching in the back of her undies. "O... Okay, Aki-neesama... I'll go tell the admiral..."

Hearing those words made her sister smile once more, and Hatsuzuki received a kiss on the forehead. "That's my Hatsu-chan. Now, quick... While you two are heading back, we'll finish the exercise so we won't all receive a punishment for this. I know you'll be able to get through this, you're a strong girl." Akizuki gave her sister a bit of encouragement, before letting go and taking a few steps away. "Teruzuki, we're going. Keep up, we've got double the work to compensate for Hatsu-chan's condition."

"You got it, Aki-nee. Try not to cry about her while we're shooting down the dummies!" The second eldest giggled, winking in Suzutsuki's direction before the two of them took off, leaving the victim and the culprit behind her accident all alone.

With the looming threat from Teruzuki briefly lifted, and the equally looming threat of Akizuki finding out on her own not being an issue either, Suzutsuki was given plenty of rope to proverbially hang her sister with. And what better way to emphasize how things were going to go from this point on, than to grab ahold of the little girl's poopy rear, push that mess up against her loosened hole, and giggle a little in her ear? "Oh, Hatsu-tan. I know you don't want to let the Admiral know... so how about you let your big sister help you out once we get back to the base?" Her words were dripping with poison, but in this position, Hatsuzuki was in no position to defend herself.

The youngest sister immediately seized up as she felt her mess spread across her bottom, the semi-solid matter mushing into a thinner disgusting paste as it clung to her buttocks, making her squeal in surprise, sniffling as she listened to her sister's words. She sobbed just a little more before she wiped her eyes clean and nodded. "Uh.. Uhuh, big sis Suzutsuki... I-If it means Admiral won't find out..."

Something in the back of Hatsuzki's head was telling her that Suzutsuki couldn't be trusted, that she should just head home and be honest about what had happened... but the horrible sense of shame was too much, drowning out that voice of reason. As the voice kept screaming to no avail, the little girl clung to her older sister, wobbling ever slightly as the feedback from the mess had left the strength in her legs lacking.

'Oh, he won't find out... Everyone else will before him, so it won't matter.' Was the devious thought running through the second youngest sister as she slowly made her way back to base, making sure to take it slow as to make the sensation of being messy really soak into Hatsuzuki. The longer she'd take, the more accustomed the little girl would get to the feeling... and the easier it would be to make her addicted in the long run.

---

Following a trek back to base that took much longer than it really should've, especially in comparison to how long it had taken to get out to sea, the two girls were made to dock, nobody really noticing that the younger of the two had come back with a pantyhose full of poop. It was a lucky break for the two of them, or so Hatsuzuki thought at any rate. She didn't raise a word as they slowly made their way into a room that the older of the two knew would be empty around this time of day, where she had prepared her supplies. The one that stood out to the younger of the two was the pink and pastel mat in the middle of the room, almost intended to be some sort of changing table.

"Hatsu-tan, please take off all your clothes and lie down on the mat. I need to clean you before we can make sure the admiral won't know." Suzutsuki said with a supportive smile on her face, rubbing the girl's back as she walked over to the other side of the room to fetch something.

Hatsuzuki would question how this was going to make the admiral not notice her accident, but she swallowed her doubts and slowly pulled down her pantyhose, gagging a little as the smell of her mess and her wet legs started to waft from the thin fabric. Her breathing grew tense as she had to lift each leg to get the hose off of her feet, exposing her to more evidence of her accident, but eventually she did manage to get it all off, instinctively discarding the pantyhose into a nearby bin.

After the near-see-through piece of clothing had been dealt with, then came her panties. The lump of mush in the back of her underwear had started to dry off, making it easy to remove her panties. The little girl winced as she felt the other parts of the mess that had clung to her rear softly fall into the fabric that had covered her rear, leaving an even bigger lump that just showed how badly the effects of the enema really were. Much like with the pantyhose, Hatsuzuki threw the panties in the trash, whimpering a little as the air within the room tickled up against her naked privates.

"N-Now what, Suzu-nee...?" The younger girl asked aloud, her hands instinctively darting towards her uncovered areas. She was happy to only be seen by somebody she trusted, but she was still naked and that immediately elicited a nervous response by her body. "I-I don't see how getting naked will help me avoid the admiral finding out..." Hatsuzuki continued, only to feel a brief shiver run down her spine. That alone was worrying enough, but as soon as she turned towards her sister, she felt the color draining from her face.

Suzutsuki, with the brightest and non-mocking smile she could muster, was holding a white-and-pink diaper meant for an adult bed-wetter, as well as a few extra supplies like baby powder and wipes, just to make sure she'd get Hatsuzuki's dirty butt as clean as possible. Just looking at it was enough to make Hatsuzuki back away, almost wanting to sprint for the door. She almost didn't want to hear whatever her sister had planned for her, but as she reached the door she stopped and looked over her shoulder, whimpering as she peered into her sister's eyes.

Her older sister looked far too pleased with how her younger sibling was acting, especially since the diaper was hardly the worst of the things she was going to make her wear. "What's with that look, Hatsu-tan? If you wear this, and you're still not done accidently messing your panties, the admiral definitely won't find out. After all, you'll be nice and tidy, the mess will only be visible to somebody that bothers looking underneath your skirt."

While Suzutsuki was absolutely right, that didn't make Hatsuzuki feel any better. She hesitantly stepped back towards the mat in the middle of the room, where her sister had taken a seat and prepared herself for the ordeal of slipping the infantile feminine garment on her 'incontinent' sister. "S-So... I just have to wear this...?" The younger girl muttered, just loud enough for her to receive a response in the form of her elder sister nodding.

This made the black-haired girl take a deep breath... before she obediently laid herself down on the pastel mat, her arms crossed to cover up her chest, while her legs were sufficiently spread as to allow Suzutsuki the space she needed to do what she had to do. Saying that it was embarrassing would be an understatement. She was a ship girl, getting put back in diapers wasn't a thing, since they had never BEEN in diapers in the first place. With that kind of logic, they shouldn't be embarrassed... and yet, here she was with a bright red shade covering up her entire face. The only thing that made her more embarrassed, was thinking back to the accident that necessitated this 'safety measure'.

The white-haired elder sister could hardly contain her glee at seeing the thorn in her side look this adorably troubled. Sometimes, there were good aspects to the fact that she was the littlest of the four of them, and this was one such time. "That's a good girl, Hatsu-tan. Here, we just need to do a little before you're ready for your protective pamper." Suzutsuki chimed as she shuffled her way along the rim of the mat, coming to a stop at the tip of the smaller girl's feet.

The black-haired destroyer shivered as she suddenly felt a wet sensation running along her exposed crack, causing a small moan to escape her lips. As she looked down at her sister, she could see Suzutsuki rubbing away at the stains that had been left on her bottom by the mess that was pushing up against her skin, but the rough way she was rubbing away made it especially hard for her to not moan. It just felt too good to have her sensitive areas teased, even if the sensation that brushed along her crack was so wet and flimsy.

Suzutsuki hid her grin just a little as she dropped the dirty wipe besides the mat, having had too much fun making sure her little sister was enjoying the feeling of being changed, every little step of it at that. Next however came the baby powder, which she generously puffed around on the little girl's thighs, crotch and ass, practically caking the girl's skin in the substance and giving it a paler shade. Then, the white-haired girl started to rub her hands into the powder, to make sure it was properly smeared into her skin instead of just decorating it.

What had previously been small moans turned into proper cries of pleasure as the 'baby girl' felt her sister's hands play with her thighs, squeezing them and really smearing the white into her creamy skin. Her thighs weren't the only place that was getting special attention either, as Suzutsuki's hands dove into her crack once again, the moans coming out of the destroyer's mouth making it hard to hear how the powder was squelching as a result of the crack still being wet from the wipes before. Still, her older sister was very thorough, even as her hands dug into the smaller girl's rear, really pushing the tips of her fingers as deep inward as they could go. With the thighs and rear done, all that was left was Hatsuzuki's pussy...

With a little perverse giggle, Suzutsuki turned her hands down towards the little girl's wet-wiped pussy, only to find herself blocked by her sister instinctively sticking her hands down to block the area. This prompted the white-haired girl to frown. "Hatsu-tan, you know I'm not done. Could you please move your hands?" She asked nicely, before curving her grin slightly. "You know the longer we stay in here, the less time we'll have before the Admiral might find us, right in the middle of your change." That little poisoned set of words was exactly the kind of words that Hatsuzuki didn't want to hear, and Suzutsuki was taking full advantage of it.

While the black-haired girl covered up her precious place, her hands slightly red as the warmth of her embarrassment was being transferred through her body, she had to whimper out a defense against her sister's touchy-feely way of rubbing the baby powder in. "I... S-Suzu-nee, you're being way too bold... I-I don't know what to think when you touch me like you've done, so p-please just put that... that... d-diaper on me, so we can get this over w-" 

Hatsuzuki was in the middle of trying to protest, only for her eyes to widen as her sister reminded her of the time they were lacking. The image of being found by the admiral and screaming her heart out in sheer shock and terror ran through her mind... and it made her move her hands out of the way, the little girl's breathing growing shakier as her mind repeated that horrid moment, leaving her vulnerable to her sister's bodily manipulation once more.

With the littlest sister's pussy being unobstructed, Suzutsuki was free to rub in the rest of the powder, taking good care to brush her fingertips up against the sides of the girl's labia.  This prompted Hatsuzuki to let loose another few cries of arousal that were quickly muffled as her arms dove up to her mouth to try and make her quiet down, hopefully making her less likely to be detected by the admiral that she desperately didn't want to meet in her current condition.

Unfortunately for Hatsuzuki, her moans were only going to grow louder as Suzutsuki pushed her fingers straight up against the lips of her pussy, gently spreading them slightly as she ran the tip of her fingers down the length of the entrance to her womanhood. The shocks running through her body were making her body shake and jolt, but she did her best to keep her hands pressed against her mouth to keep the noises muffled and almost quiet...

Eventually though, the pleasure died down. Hatsuzuki was given a tiny moment to breathe, letting her calm down even as the lips of her womanhood were dripping with a thin layer of slick juice. A small and thin string of the substance connecting the girl's pussy to her older sister's fingertips. She didn't even get to notice Suzutsuki licking the fruits of her arousal off her fingers, as she was too busy trying to regain her breath and calm down completely.

"My my, Hatsu-tan. I never took you for a screamer. I suppose I'll have to give the Admiral a little nudge later on, if the two of you ever get married." The white-haired girl chimed as she gently patted her sister's thighs, before wiping her hands clean with a spare cloth. The preparations were complete... Now came the 'fun' part, the clothing that would serve to forever cement Hatsuzuki as the base's baby, at least once Suzutsuki was completely done with her.

Thankfully, the black-haired girl held still this time and kept quiet, letting her older sister carefully slide the back of her new pink diaper underneath her rear. With the soft plush insides of the diaper cushioning her rear, it didn't take much effort for her sister to weave the front and middle of her new padding through her thighs, the absorbent part of her infantile garment pushing up against her crotch, quietly letting the dribbling love-juice soak into it.

Lastly, with the front of the diaper pushing against the top of her crotch, Suzutsuki grabbed ahold of the tapes on the wings of the diaper, and attached them to the backside's wings, completing the loop and finishing the little boat girl’s change. The black-haired youngest of the Akizuki-class of destroyers... now clad in an embarrassingly pastel pink and white diaper that was not only horribly unfitting, but it was actually a little larger than a normal adult-sized diaper... Exactly as Suzutsuki had planned, as she wanted it to stand out, even against the other infantile clothes that Hatsuzuki were going to wear.

Hatsuzuki squirmed a little as she looked down at her crotch, futilely trying to squish her legs together and finding that it was utterly impossible as a result of how thick the diaper was. "S-Suzu-nee... I..." She muttered, audibly struggling as she tried to make her feet touch, but even that was being harder than she could imagine. The little girl did manage to make her tippy toes touch, but that was all she could manage with her current predicament... "I... I can barely make my legs come together... Are you sure the Admiral won't notice?"

Suzutsuki chuckled as she patted the front of the little baby's diaper, causing it to audibly crinkle more so than it already had from her thighs squeezing together. "Oh, of course it won't. You're going to have something much more obvious, something that'll really make it clear to him that you're nothing more than a big baby. Now, you just have to let me finish putting your new uniform on you, and then we'll show you off to the rest of the navy!"

"...Eh?" Hatsuzuki didn't believe what she just heard. Did Suzutsuki just spoil her plans right then and there...? Was... Was all of this to humiliate her further...? "...W-Wait, Wait a moment... I..." She was a loss for words, having trouble processing everything that her sister had just unloaded. She was a baby? She was going to be dressed in a new uniform? And she was going to be shown off to everyone...!?

It was then that it finally clicked for the young black-haired ship girl. "No... Suzu-nee... You... You did this, you planned all of this!" It had taken her a long time to piece it all together, to the point where her older sister had to spell it out, but she finally realized the reason why she had a stomachache this early in the morning... Well, at least who caused it, not exactly why.

"Mmhm, that's right Hatsu-tan. I'm surprised you didn't realize it earlier, given how I've been referring to you as a baby all day. I guess that enema I gave you really made it hard to think, so you didn't even pick up on it. But don't you worry, I won't be the only one that thinks you're a baby once we're done here. Now, you just sit still, and we'll be ready in just a few minutes." Suzutsuki cheerfully affirmed her little baby sister's suspicions and admitted that she had been behind it all... before she dragged a little box full of soft looking clothes closer to the mat.

As much as Hatsuzuki wanted to escape, the moment she tried to sit up was the moment her legs and thighs felt utterly numb. It was as if her legs felt like a pair of useless and floppy noodles, barely able to do anything... which meant that they were completely vulnerable, something Suzutsuki took advantage of by slipping a pair of small toeless booties onto her feet, making it hard to do anything articulate with her feet from that point on.

Once the booties had been slipped onto the younger girl's feet, the next important piece were her gloves. Unlike below, this time Hatsuzuki had a chance to fight back, her hands trying to grab at her elder sister's wrists so she could potentially punch her and make her back away and leave her alone. Being found in this condition would be infinitely preferred to being guided around the base in a complete baby outfit...

Her attempts to resort to violence were for naught however, as the moment she stretched her arm out to punch the white-haired destroyer, she found her wrist grabbed by one of her older sister's hands, and a bright pastel pink glove fitted onto the captured fist. The same maneuver happened once Hatsuzuki tried to strike with her other fist, resulting in both hands ending up gloved and utterly useless in the realm of 'combat'. As was the case with her boot-covered feet having trouble with articulate actions, it was going to be hard to do anything harder than just grabbing something with her palm, which included trying to hit her mean and horrible sister for planning to turn her into a baby!

As her black-haired sister tried her hardest to hit her, the white-haired destroyer couldn’t help but laugh out loud. "Oh, Hatsu-tan. You're so cute, thinking you're actually an adult. You pooped your panties during an exercise! That out of anything should disqualify you from being a big girl on principle alone!" Suzutsuki mocked her younger sister as she pulled the final article of clothing out of the little box. A bright pink and frilly dress, one with a skirt so short that it would be incredibly hard to cover up that massive diaper.

"I-It's because you made m-" The younger girl tried to protest, before she found herself suckling on a pacifier, the sounds of rubber meeting lips repeatedly filling the otherwise empty room. She wanted to pull it out, she really did, but as she moved her gloved hands up to pull it out, she felt a chill run down her spine, and a soft hand slapping the side of her diaper.

"Oh, Hatsu-tan? If you pull that out, I'll just drag you out of here as is, parade you around as a pervert instead of a baby. So be a good girl and sit still, otherwise you're getting a worse reputation than what I'm planning for you." Suzutsuki chimed as she grabbed ahold of the girl's wrists and held them above her head, to make it easier to fit the dress onto her. 

The moment she reminded the little girl of what was at stake, her resistance faded away alongside the color in her eyes. What could Hatsuzuki even do in a situation like this? Suzutsuki had her in an impossible-to-escape situation, and no matter what she'd do, she'd end up being laughed at by everyone. Better to just accept it at this point.

"That's a good girl, knowing her place once she's reminded of it. Now, to get this dress onto you so we can go show you of." Suzutsuki laughed a little as she reached down to the bottom of the dress now that Hatsuzuki's arms were nestled within, before yanking on the fabric to pull it onto her torso. The arms slid through their intended holes, and so did the little girl's head, leaving her upper torso fully covered up by the dress. Of course, it didn't properly cover up her lower torso which mean that her diaper was sticking out like a sore thumb. At least it kind of went with the colors of the dress' frills.

At this point, Hatsuzuki didn't want to speak up. She had been well and thoroughly embarrassed, humiliated even. She just wanted to go back to her dorm room and go to sleep... but she couldn't, because her sister still had more plans for her. One last moment intended to fully ruin her, both in the sense of how people perceive her, and how she'll perceive herself.

"You look so adorable, Hatsu-tan. Now, to show you off to everyone. I think going to the cafeteria will do, don't you think so?" Suzutsuki chimed to the infantile girl as she pushed the box aside, walking over behind another box to reveal an adult-sized stroller, one that the smaller girl really should've noticed earlier. "They're going to think you're oh-so-adorable when you're suckling away on your pacifier in your stroller. Doesn't that sound so fun?"

The only response Suzutsuki got was a quiet whimper from a girl that dreaded what was about to happen...

---

At this time of day, the cafeteria was full of ship girls trying to have their midday meal. Which meant that there was more than an audience for a little girl to be showed off for the first time. even if most of the soon-to-be spectators were currently busy chatting amongst themselves.

Strangely enough, there were a lot of sister ships currently within the cafeteria, and if they were even anywhere near close to the way the Akizuki sisters behaved... Maybe Suzutsuki's plan was going to do more than just make the entire base treat her littlest sister like the baby she was now dressed like.

The heads within the cafeteria suddenly quieted down and whipped towards the entrance as they heard the double doors slam open... and a significant amount of cheeks within the mess hall started to blush at the sight they just witnessed, a sight most alien to the lot of them.

Suzutsuki had made a grand entrance, her smile beaming as she slowly wheeled forth the stroller that carried her little baby sister in her garish and infantile outfit, everything on full display. "Good afternoon everyone, don't mind me, I'm just going to get my little baby sister some lunch, and then she'll get her midday nap. Nothing unusual here!" The older of the two sisters chimed, being as loud as possible without outright screaming, so that everyone in the cafeteria could notice the two of them.

Hatsuzuki on the other hand, was blushing from head to toe. Every single part of her body had a reddened shade as she suckled on her pacifier with a panicked urgency. Her heart was beating so quickly and with such intensity that if somebody could actually hear it, they would've thought she had just finished running a marathon. 'Please look away... Please just look away and forget about me...' The little girl thought to herself as she was wheeled forward, squirming just a little bit and causing the quiet cafeteria to be filled with the sound of her diaper crinkling...

While the young girl was being wheeled through the cafeteria, immediately a lot of girls were riled up into conversing about the strange happenings before them, most incredulous, and some even... inspired. The Kagerou class destroyers Kagerou and Shiranui were two of such girls.

"You're seeing that, right sis? Hatsuzuki's dressed up like a baby, isn't it just absurd!?" The easily excitable Kagerou practically shouted into her sister's ear, matching the volume of a lot of the other girls that were shocked from the sight.

"Would you please quiet down? She's cute and all, but I would like to finish my meal so we can get back to work." The younger and more serious of the two muttered back in response before stuffing a little chunk of rice into her mouth as she tried to look away from where all the attention was being drawn. 

"You're never any fun, Shiranui-chan..." Kagerou replied deflatedly as she looked back at the stars of the show, the gears within her head turning. Maybe the idea of dressing your sister up as a baby wasn't that absurd...

In another part of the cafeteria, a loud scoff echoed throughout the hall. "Hmph! Look at those Japanese fools, participating in something as childish as humiliating your siblings in public. Don't they know better than to sully the bond between family?" The haughty Bismarck huffed with arms crossed across her chest, almost insulted by the notion of one sibling dominating another. 

"Well, Bismarck-neesama... What if it was done to somebody that wasn't bound to you as a family member?" The younger German cruiser asked, prompting her fellow blonde to look towards her, before following the path of her finger. Eugen's finger was pointed in the direction of a pair of younger identically dressed and boyish destroyers, Z1 and Z3, who both seemed utterly disinterested in the antics that were going on... that is, if you couldn't see the blush covering their faces.

"...Eugen-chan." Bismarck said as she took a deep breath... before a perverse shade of red covered her face. "Make preparations." She concluded before the two girls launched into a series of worrying giggles that their soon-to-be-victims thankfully didn't pick up on.

The sensation of having everyone stare at you and talk about you was making Hatsuzuki incredibly uncomfortable. She squirmed in her seat, whimpered from behind her pacifier, but it all did exactly nothing. She was just about to cry before she felt a warm hand on her cheek and a horrible grin creep its way into her vision.

"It's okay, Hatsu-tan. Look, they all love how you look, otherwise they wouldn't be talking so eagerly to each other about you. Isn't that great? You'll always be a baby in their mind after they remember this day fondly!" Suzutsuki giggled as she pulled her head back up, letting the thought soak in her sister's mind...

That wasn't the only thing soaking, however. As the thought ran through the black-haired girl's mind, the grim reality of how she would be seen in the future finally clicked... and she began to sob softly. She lost all her dignity in one fell swoop, just like that. The sobbing little baby couldn't help herself as she put her gloved hands up to her eyes, trying to hide away the tears as something down below barely made a sound.

The white-haired girl raised an eyebrow and looked down, only to giggle a little more. "My my, Hatsu-tan. I didn't expect you to wet your diaper this early... but that's fine, it's why I put it on you. We couldn't have you making a mess you could never hope to clean up, like the accident during our little practice sortie. A baby is allowed to pee her diaper!" That giggle soon turned into a laugh as she continued to wheel the stroller forward, reaching the cafeteria counter where she could finally give her little girl a bit of food.

As the tears streamed down the pacified baby's cheeks, she thought things couldn't possibly get worse. That changed as she picked up the scent of something warm and mushy that thankfully didn't come from her. It came from a steaming pile of baby food, neatly decorating a little tiny plate made for babies, complete with a tiny spoon that could barely carry even a lump of that mush, definitely meant to make sure that babies wouldn't swallow more than they could handle.

Suzutsuki scooped a little bit of the mushy food up and onto the spoon, before reaching over and pulling out her little baby sister's pacifier. "Here comes the airplane, Hatsu-tan. Be a good little 'Carrier' so it can safely land!" She chimed in a mocking manner as she slowly pushed the spoon towards the little girl's mouth... who obediently stuck her tongue out despite the tears. "Good girl. Now swallow." Upon being commanded, the black-haired baby closed her lips around the spoon and began to swallow...

...It didn't taste all that bad, actually. Sure, it was food meant for a baby... but considering that's what everyone was going to treat her as, maybe it wasn't that bad to just give in and enjoy it...?

With that thought drifting through her mind, Hatsuzuki slowly dried away her tears as she started to give into the kind of role that Suzutsuki was forcing upon her, especially as she started to eat that baby food with a surprising amount of eagerness, which only made the older of the two giggle ever-smugly.

"Look, Hatsu-tan, look how easy everything seems once you give into what you truly are. In fact, I know something that's even easier now that you're a big baby... Showing the Admiral how poopy you are!"

Just as the little girl had started accepting her fate, she was whipped right back into a horrible frame of mind as she heard a familiar pair of shoes entering the cafeteria. 'No, no no no no no! He can not find out about this!' Hatsuzuki hurriedly thought, trying her best to struggle out of the stroller she was trapped in, but her legs were still far too numb to do anything... and then, she felt a sensation in her stomach that she was all too familiar with.

Suzutsuki smiled wickedly as she turned the stroller around to face the entrance to the cafeteria, noticing their Admiral entering. "Ah! Admiral! Look over here, Hatsuzuki has something to tell you!" She called out, getting his attention and then some as he stared straight ahead at the baby in the stroller...

'Do not look at me...!' Was the last thing Hatsuzuki was able to coherently think before the laxatives that Suzutsuki had secretly laced the baby food with kicked in. As she tried to stutter and protest, she could only let out grunts that highlighted what was about to happen.

As the baby food was designed to be exceptionally nutritional for little boats like her, it felt like her colon was full and ready to burst... and with her current emotional troubles, it was hard for her to focus on keeping the mess inside. What started out as weak attempted stutters that turned into grunts, were now being accompanied by a small orchestra of brassy sounding spouts of gas.

The gas wasn't the only thing that wanted to push its way out of her rear, as a soft pile of brown and smelly mush forced its way outward from the hole that had previously been so tight before the watery shit earlier. Her diaper was quick to expand from the volume of the mess, the back growing brown as it sagged out from the bottom of the stroller seat. It was a proverbial torrent of poop, and there was no way for Hatsuzuki to stop it.

The more she tried to squirm in her chair, the more the mess loosened from her hole, making it harder to stop her final act as an "adult". As more and more of that mush was being pushed out, the more Hatsuzuki found it harder to actually think straight. It was as if the laxative that she had been given was making her poop out her last bits of dignity and adult sensibilities... Which... wasn't that bad, was it?

After all, she had just mentally accepted that it felt nice to be fed like a baby. Was it really that bad to mess herself like one too? She was dressed like one, everyone talked about her like she was one, Suzu-nee treated her like she was one... and now she was acting like one. Maybe she really was a baby all along, and her sister only did her best to push her towards admitting it to herself...

That thought was the only coherent thought that bounced throughout the pamper-clad girl’s head as she pushed more and more out into her diaper, the back still expanding as it sagged further to the ground, gravity doing what it was intended to do. Hatsuzuki's expression was gradually changing for the better as her mess was slowing down, the laxative having trouble forcing any more out of her innards... until finally, everything had been pushed out, and the back of her diaper touched the ground.

Despite just having emptied her colon of all of its contents, even the stuff that had been left behind by the last accident she had, Hatsuzuki could only look at her Admiral with a slurred and broken smile. She had been broken in every sense of the word, and she childishly giggled as she tugged her skirt up a little to show off the culmination of the efforts that Suzutsuki had gone through to get her to this infantile state. She was nothing more than a messy baby at this point. A messy baby that couldn't help but speak up, to announce exactly what she had done, straight to her Admiral who had watched it all unfold... 

"Hatsu-tan went poopy..."