[ABDL, Diaper Use, Soiling, Mind Break]

While war raged the seas, the one that pitted the East against the West as well as the Sirens that dared to try and manipulate both sides, there were certain smaller factions that didn’t concern themselves with the morality of either side. The Merlion Republic was one of those factions, preferring to stay out of it and develop their fleets as to avoid being dragged in without being properly prepared.

A subsection within the Merlion Republic was at the forefront of that development. The Depth Watchers. Putting experimental plans into production was one thing, testing them out with machinery that would allow them to visualize the ship beforehand was another. These two elements in tandem allowed them to develop ships with technology far above their peers, though with a volume that couldn’t match the industrial juggernauts. In short, a strong yet slim force.

Of course, because of the specialized process that the Watchers used to manufacture their ships, the girls that matched them after the Wisdom Cubes let their spirits materialize had a few… Quirks. For most of them, it manifested in abnormal mental quirks, like a much larger distaste for actual work.

For Hantu Raya, the second in the Luna-class Destroyer class, it manifested in a physical manner. A highly degrading and utterly embarrassing manner. One that had been eating away at her psyche for a few weeks, ever since it arose. To put it bluntly, she had bladder and bowel problems. The pressure that built up, or at least her ability to feel that very pressure, was completely numb to her. Only by using her natural speed and her instinct had she been able to avoid making a complete mess of herself…

That all changed one day, when she was having a bit with fun with her dearest older sister. When she least expect it, she felt the rush of something flowing into her panties… And by the time she realized it, there was no excuse. She couldn’t say a thing, she could only nervously pinch her thighs together as the yellow liquid ran down.

Her sister, Luna, watched her younger sister slowly pee her pants. The brunette’s blue eyes were firmly locked on her as she crossed her arms, the darker colors of her top naturally flowing into the brighter ones on her skirt. “Well well! Looks like you couldn’t hold it that long after all, Hantu!” The naturally confident girl teased her younger sister, though the look in her eye was obvious. She only teased her to make it seem like it was a normal occurrence. Just to make sure she didn’t break down or anything.

Hantu Raya slowly looked down at the puddle forming on the floor, the mask always adorning her face making it hard to see her lips quivering into a frown. Not to mention that her dark blue skirt had gotten a little more than soaked by the sudden rush of yellow liquid, making her feel even worse. No matter how many times she nearly made a mess, the cleanup afterward made her heart sink.

“Big Sis.” The normally cheerful and teasing black-haired Destroyer was very precise as she spoke, kneeling down as she looked at her accident. “Can you please help me clean it up? I don’t want the Admiral to find out.” She didn’t even mix in some of the various weird words that she tended to flip between during her normal speech, preferring to talk straight to the older Destroyer. The less she had to dwell on this, the better.

Luna tapped her chin before throwing her hands behind her head. “Yeah, sure, but only if you promise to do something for me. You can’t keep going around without protection, you’ll make a mess when we’re out at sea before you know it.” She kept on teasing her, every word meaning well. “Stay here, I’ll grab something and a couple of towels.”

Hantu didn’t get to argue against it, staying right where she was as she watched her older sister speed off. All with a worried look in those purple eyes of hers.

Just as quickly as she left, she arrived once more, carrying a bunch of towels ready to soak up the mess and wipe the floor clean. She even brought a spray bottle full of cleaning solution to try and get the smell out, but that wasn’t the thing that made the younger of the two sisters raise an eyebrow. No, it was the thing under her arm, the notably crinkly looking garment.

“Is… That’s a garment for human infants, isn’t it?” She asked, and her sister nodded. “That’s your idea of protection against accidents, Big Sis?” She asked again, and the answer was the same. Perhaps even more eagerly so, the smile beaming off her sister’s face being a little too nice. “...Couldn’t we just-”

Luna shook her head as quickly as she nodded, dropping most of the towels onto the wet spot on the floor. “You wanted me to help you clean, you gotta do me a favor in return. You know how this works, Hantu, don’t try to weasel out of it!” She huffed a little, the girl’s pride keeping her from being gentle in regards to this very sensitive matter…

Hantu looked down at the floor before nodding. “Sorry, Big Sis.” The masked Destroyer muttered as she carefully removed her panties, not wanting to get on her sister’s nerves. Especially not given the very precarious situation at hand. She let the wet garment fall to the floor, caught by the towels as the pee from it soaked into the paper…

The older of the two Luna-class Destroyers grinned as she used that speed of hers to do all of the cleaning in no time flat. Before the younger blinked too many times, the entire puddle had been lapped up, and the floor was spotless. Not only that, but she had sprayed it and wiped it off a bunch, meaning that the scent was completely gone too.

“Okay, now you’ve gotta do your end of the bargain, Hantu. Lay down, I’ll be right back!”

Yet again the older sister sped off, but not for long. Just as quickly as she had left, she returned with a couple of extra supplies. Primarily some wipes meant for babies, some powder to make sure that her younger sibling didn’t get any rashes, and… A bottle of milk. Something that the youngest decided to ignore for the sake of her mental well being.

Hantu carefully sat down and lifted her legs into the air, pulling her skirt up to properly expose her private areas. Something that made her feel even more shame than she would’ve originally imagined, but it was something she had to endure. Especially as her sister dabbed the wipes onto her sensitive spots, making a few tinges of pleasure rush through her. It was not how she imagined she’d ever get intimate with her, and she definitely didn’t like it that much…

Luna was very careful when she wiped her sister. Careful enough to stop herself from going too far, at any rate. Once she was properly cleaned, it was time to get her powdered up. A little puff there, another over there, and then a lot straight on her butt. All of which got massaged around the general area, making sure to cake it in without leaving any spot too thick. After all, this wasn’t going to be a one time ordeal. If it kept her from making a mess, the diaper would be a permanent addition to her daily life.

The black-haired girl felt shivers run up her spine as she kept her legs held up. She knew that her older sister knew how to treat her, but this was… Something else. Had she been wanting to try something like this ever since they were ‘born’? She couldn’t say for sure, she only knew that her older sister was really good at it, somehow.

“Okay, now for the important part.” The brown-haired Destroyer grinned a little as she opened the diaper to reveal the cute art that decorated it. Lots of cutesy and tiny ghosts plastered all over it, no doubt to act as indicators or something along those lines. And that was what the younger sister was going to be wearing from now on. Something that was… Almost as bad as just going without diapers and accepting those accidents. Almost.

Hantu just closed her eyes and hoped it’d be over soon as she felt the plush padding pushing in under her butt. She could hear the fabric crinkling as it was weaved through her thighs, causing her to instinctively tighten the gap between them and cause it to squeeze and squish a little. Which just helped her sister out, as it meant she could snap those tapes on the wings on even easier than she normally could. Leaving the masked cutie with one adorable diaper, ready to be used in case of an emergency.

“There we go, one clean and not at all pissy Hantu, ready for the Admiral to admire.” Luna giggled as she patted the front of her younger sister’s diaper, enjoying the sounds that it made. “So, how’s it feel? Do you like it? ‘cause you promised you’d wear it, and I could try and find a comfier one if you don’t like it.” A little bit of her older sister instinct managed to sneak out past all the smug teasing, reminding her that this was all for her sake. Not for anybody else.

Her little sister looked down at the diaper, then up at her. The way that her expression changed from outright worry to shy comfort said it all. “It’s nice, Big Sis. Thanks.” She chimed, the outline of her smile visible underneath her mask. She knew she could count on her in situations as difficult as these…

“Nice, nice. Now, I think it’s time we try and train you, okay? The brunette was quick to change the subject as she caught the girl in a comfortable position, yanking the bottle of milk off the floor where she had left it. “I read in one of the Admiral’s books that treating an incontinent girl like she’s a baby can help fix her problems. And you know how smart our Admiral is, it has to be true.” She argued, pushing the tip of that bottle towards her sister’s lips, pulling her mask down a little to get access..

Hantu was rightfully suspicious, but she had just thanked her sister. There was no reason for her to say no to this, especially if it really could cure her. So she opened up her mouth and let the nipple slip into her mouth, her lips closing around it as she began to suckle. And, while the experience of being bottle-fed wasn’t too bad, the warmth of the milk was actually kind of nice…

That was right up until her stomach started to throw quite the powerful fit, loudly roaring and groaning in response to the warm milk. It made the black-haired girl fall right back onto her knees, after she had done her best to get up. All while her arms wrapped around her tummy, the pain quickly spreading through her body.

It seemed like the cure had been as effective as it said. But it only worked by making her painfully aware of the knot in her bowels, one that was forcing its way out ever slightly. At the same time, her butt let out cute yet dirty toots. *Prrrffft* and *ffffrrrtts* echoed from underneath the thick diaper, the back of her padding starting to smell a little from the gas stuck inside her.

Luna didn’t say a thing, smiling as she watched the baby in front of her keep sipping down the milk that her belly was disagreeing with. “There there. Just let it all down. It’ll help, trust your Big Sis, Baby Hantu.” She giggled, degrading her just a little. After all, she was about to mess her diaper, and only babies wore diapers…

*FRRRRRT*

The farts grew stronger, louder, and stinkier. The pain that wrecked Hantu’s tummy intensified, and she couldn’t help herself from crying. The tears ran down her cheeks, staining her mask as the crushing reality of it all came down on her. She couldn’t stop it. She couldn’t even come close to stopping it. She was about to mess her diaper, and… And right in front of Big Sis too…

“D-Don’t look, don’t look!”

Her cries didn’t work. Nor did they stop what had to happen. She could feel her hole widening, groaning and stretching as the large serpent of pure waste coiled its way into the back of her diaper, adding brown shades to the adorable ghosts that decorated it. The pain, the humiliation of squatting down and letting it all out… It made her tears run down even faster, her quiet tears turning into loud and obvious sobs.

She couldn’t stop it. Thus, something inside her mind clicked. She didn’t need to stop it. Instead, she just pushed and pushed, her thumb instinctively heading towards her mouth. The bottle had long since left her lips, and her thumb took its place as she suckled on it, trying to use it to calm her nerves, even as the stench below started to waft around her.

Luna just watched with glee. Of course, she hid the brunt of that happiness from her little sister. She didn’t have to know or find out that this was entirely planned by her from the get go. By putting a little, teensy bit of laxative into everything she ever ate, she was able to turn her incontinent. She even finished the job with a bigger dose, swirling around in the milk she had fed her sister. Why would she do such a thing? Because she was trying to branch out, when she really should be directing all her love to her Big Sis.

“There there. There there.” The brunette said as she slowly wrapped her arms around the messy baby, hushing her and rubbing away at her back. “It’s okay. Big Sis is here. It’s okay that you’re a baby, Hantu. I’ll still love you. Just like you’ll love me, right?” She comforted her with her words, despite being the culprit behind it all…

And of course Hantu bought every word she said, slowly but surely sitting down as she leaned into her sister’s hug. She could feel all of the mess squishing around below her, and… It was actually kind of nice. But only because Big Sis was there. Without her, she wouldn’t know what to do.

The younger Destroyer… Regressed. The look in her eyes was a pure one, unsullied by anything. And the way that her crotch quietly began to hiss as the front of her diaper grew yellow made it clear that any hope of her actually regaining her continence was null and void. She was permanently, irrevocably, incontinent. And it didn’t matter.

She was Big Sis’ little baby. And she loved her, oh so much.