[ABDL, Diaper Use, Mental Regression, Soiling]

"I can't believe she actually managed to get the better of us. Sorry, Touji-chan. I messed up."

"I-It's not your fault, Ayame. We were both caught off guard by what she had planned for us. We... We just have to hope we can get through to her..."

In the middle of a childish room were two cribs placed side by side. And laying in those cribs were a pair of wolfy twins, kept close yet just out of each other's reach thanks to the bars that separated them. Despite the untold amount of power at their fingertips, they had been disarmed and rendered helpless. And even if they tried to get out of their cribs, they were going to reappear where they currently laid not long after leaving its confines...

The two wolf-eared twins were Continuity Tuners. In short, it was their job to make sure that worlds progressed without outside interference. Even if those worlds were headed for bad ends, even if the worlds stretched into a peaceful utopia. They just had to make sure that everything happened naturally, and that any that disappeared from these worlds due to unruly actors were returned once those actors were dealt with.

The more vocal of the two Continuity Tuners was Ayame Kagebi. She had black hair with red streaks woven in between the darker shades, and crimson eyes that were as honest as she was bright. Despite her preference for black and red, evident by the kimono that she wore, she was nowhere near as dark as her colors implied and was always happy to help. A tomboy at heart, she found her current predicament utterly humiliating. A tomboy at heart, she found her current predicament utterly humiliating. Especially since she thought she could trust the hospitality of that pale demon... And yet she lowered her guard just enough for her to end up like this. And with an extra feminine and incomprehensibly infantile diaper wrapped around her waist, covered in hearts as if she was ready to find a lover. And considering Ayame had a bit of insecurity regarding her feminine side, just the thought of her diaper would bring a blush to her cheeks.

Ayame's quieter sister was named Touji Kagebi. Just like her sister, her hair was black with blue streaks taking the place of her sister's reds. Unlike her sister, she not only chose to go with attire that made her look more like a maiden ready to share worship, but also chose to contrast her blacker hair with the white hues of her current garments. And just like Ayame, she had fallen for that demon's trap. While she had her suspicions, considering the way that the demon was rather akin to that diaper-enthused member of the Tsukimitsu family, she didn't think that she would dare team up with the worst part of that family. Even if that worst part wasn't the cause of their predicament, nor the one that had picked out a darker diaper with moons printed on it. Despite being less feminine, it was all the more childish... Which, just like the feminine aspects of Ayame's diaper, served to prod at one of her greatest weaknesses, hence how her cheeks were flushed bright red with shame...

What had happened to them was simple. They had gone to that demon's home, to make sure that they could return any of the girls that were missing from the worlds they were tasked with keeping eyes on... Only to find that the demon was currently out, and their youngest sister had taken her place. In that instant, when they expected somebody warm and welcoming, they were at their weakest. And thus they were swiftly defeated, landing them in their current situation, with those soft garments pressing against their bottoms...

"Good morning, Baby Sisters! I hope you slept well!"

Speaking of the devil herself, their youngest sister decided to make her grand entrance. How she got into the room was a question for the ages, because it didn't seem like there were any actual entrances or exits. But that didn't really matter for a girl like her, nor for the two padded girls that were currently laying in their cribs. If only they could leave their cribs, then they could find their way out...

Their sister, Shuuka Kagebi, was the youngest of the trio. And while her hair was black and blonde, with the blonde strands woven in between the shades of black, she decided to wear clothes that were a lot more light. She went with a white dress that had longer black sleeves, which didn't get in the way of her archery.

Despite being the youngest of the three Continuity Tuner sisters, she was perhaps the strongest. Because unlike her sisters, who viewed their current predicament with shame, she was able to push past that. Though not because she was unaffected by that shame, but rather because she reveled in it. The idea of being shameful was one that brought arousal to her. And it was because of this that she ended up sparing one Shimai Tsukimitsu when she had her dead to rights, joining her and becoming her adorable Diaper Baby. Which was perhaps why her skirt was so short compared to her sisters', so she could properly show off her diaper to the many worlds she visited.

Ayame glared at Shuuka as she came over to their cribs. "Shuuka... How many times must we tell you? We're your older sisters! You've been poisoned by Shimai, can't you see? Please, you don't have to do this!" It was one thing to have Shuuka stuff them in these diapers. It was another for her to outright disrespect them in this way. She wasn't a baby, for one, and she definitely wasn't younger than Shuuka!

"Shuuka... Mother wouldn't want this... You know that..." Touji didn't want to hate her sister. But she knew she had to say something. Anything to try and stoke the feelings in her heart, so she could be brought back to the side of good. Or at the very least, get the two of them out of these diapers...

"Mother..." Shuuka let her arms rest on the ends of the cribs, sighing wistfully. "Indeed, Mother wouldn't want this. Buuuut... Mother should just open her eyes as well. Mommy Shimai's going to try and make her see things her way, then everything's going to be alright." The devious wolf chimed, as she smiled from ear to ear. Ah, she would do anything to see that. Especially after Mommy Shimai had taught her everything about how good it felt to fill her diaper. "Besides... After that other Mommy was nice enough to lend me her manor to set up this trap, I get to help you two babies understand everything. So Mother can wait!"

Ayame's glare intensified as Shuuka implied that she would drag their Mother into this. "Do you truly not understand shame any longer, Shuuka? You... You..!" If she wasn't disarmed, if she still had her blade at her side, then she would've cut her down... And probably put her over her leg for a spanking, because it was clear that no other treatment would actually change anything.

"Ehehehe... Looks like the Baby's being extra grumpy." Shuuka chimed, as she reached into her sleeve to pull out a dangerously small remote. "But don't you worry. As your Big Baby Sister, I'm ready to discipline you. And I know exactly how to put you in your place, Big Sis Ayame!"

As soon as she pressed the single button on that remote, a sharp moan left Ayame's lips. The elder Kagebi twin ended up jerking forward, right before her diaper started to vibrate in a soft manner. All while that first moan gave way to way more moans, and her hands drifted down towards her padding as she tried to make the vibration stop...

"A-Ayame..!" Touji cried out as she watched her sister get sent to a pleasure-filled hell. "Shuuka... Wh-Why? Why would you hurt her like this? You know she's sensitive down there..!" She had seen it before. What happened when Ayame was forced to toy with her sensitive genitals. It was a humiliating sight, and this was no different.

"Well, she's a cute little Baby. It only makes sense that she should be filling her diaper up, don't you think?" Shuuka giggled in turn, licking her lips a little at the sight of Ayame squirming in intense pleasure. "It really is easy to manipulate you both when you're in here. Just a little wink, and a vibrator finds its way onto Big Sis Ayame's vagina. Maybe I'll add another if I really want to see her squirt, ehehehe..."

Ayame was trying her best to endure her current predicament. But the way that it all just kept on going. The constant, uninterrupted vibration down by her pussy... She couldn't handle it. She couldn't do anything except for moan and helplessly hug her pillow, closing her eyes as the vibration seemed to intensify...

Right up until the moment the elder Kagebi twin was forced to let out a powerful moan, squirting her feminine juices straight into her diaper. The front immediately grew nice and sticky and soggy from soaking up the juices, an adorable wet spot forming on the outside. All while those hearts that were printed on the diaper started to grow nice and full too, acting as a fullness indicator of sorts...

"A-Ayame..." Touji felt the tears running down her cheeks as she watched her sister fall victim to this specialized torture, prompting her to turn towards Shuuka and glare. The normally shy wolf let her emotions actually boil over. "Shuuka..! Stop! Please!" She even started yelling. She never raised her voice, even when she was personally being humiliated...

Shuuka shook her head in a disapproving manner. "And here I thought Big Sis Touji knew better than to yell like that. Baby Sisters don't yell at their Big Baby Sisters, you know?" The devious wolf said, her words acting as a sort of reprimand. "But that's fine. Your Big Baby Sister knows what to do. You're starving, that's why you're yelling, ehehe..."

"I'm not hungry!" Touji cried out, tears continuing to run down her cheeks. Only for her stomach to grumble in response. Just as Shuuka had said, she was at her complete mercy. So if Shuuka thought that she was hungry, her body responded in turn. Even if it shouldn't make sense.

Her younger sister smiled as she walked over, pulling a rollable table closer to the crib. A table with a lovely bowl filled with lots of lovely... sweet... potatoes. The sight of which quickly made Touji's eyes widen in shock. She should've seen this coming, considering what Ayame was forced through.

"If Big Sis Ayame's getting introduced to her new life as a Baby Sister through her sensitive pussy, then I'll introduce you to your new life through your sensitive and extra empty tummy, Big Sis Touji." Shuuka was enjoying herself far too much. Especially as she grabbed a spoon and started to dig into the bowl, scooping up a very nice portion of that sweet potato goodness. "Come on, open up. The airplane's coming!"

Touji trembled as she looked at the spoon. "Sh-Shuuka... D-Don't... Don't make me eat that... You know what happens to my stomach if I eat something like that..." She muttered in such a weak manner. She would much prefer being forced to eat something else. Anything that wouldn't wreck her stomach like that...

"Ehhh? You really want to turn down this delicious food? How selfish and picky of you, Big Sis Touji. Guess you really are getting a hang of being a bratty Baby Sister, huh?" Shuuka mockingly acted like she was hurt by her sister's words, while also teasing her about how childish that kind of refusal was. "But it's fine. If you don't want to eat it, then the mouth below'll just have to eat it. Once I turn it into puree and make sure it can fit inside, of course."

She... She would go as far as to turn the sweet potatoes into a makeshift enema, for the sake of making her sister eat it and fill her diaper... She truly couldn't believe that she was willing to go that far. Which ended up eroding enough of Touji's resistance, to the point where she quietly muttered to herself. "Just what did Shimai do to you to make you turn out like this..?" Before opening her mouth and letting her tongue hang out for the 'airplane' to land on.

"T-Touji..!" Ayame cried out as she noticed Shuuka start to feed her sister the sweet potatoes. She knew what would happen if she ate that entire bowl. The girl would be completely ruined, and even after expelling it in such a violent manner should she be filled too much... She'd be unable to recover for weeks, if not months..!

And yet she couldn't do a thing to stop Shuuka. Not with all the pleasure going through her. Not with how she was forced to climax again, crying out as much as she could as she ended up letting go of her pillow. All because the pleasure was leaving with too little energy to use her body.

Touji swallowed the first spoonful of sweet potatoes... And instantly, her allergies and sensitive stomach were acting up. While the sweet potatoes were definitely good, and didn't taste terrible in the slightest... They were a type of food that was filled with the same kind of energy that rushed through her body. And because of that, the fragile balance was disrupted. Through nothing more than a bite's worth of sweet potatoes, her stomach was already throwing the greatest fit of all.

And accompanying that fit was the obvious noxious fumes that were trying to escape her body. All of them sneaking their way out of her ass, in the form of incredibly loud and stinky *FRRRRT*s and *BRAAAAAP*s. Each brassy sound accompanied by the seat of her dark diaper turning subtly brown and green in tandem, depending on the kind of stink that flooded out of her.

"Stinky, stinky!" Shuuka teased her older sister as she kept on feeding her more and more of the delicious sweet potatoes from the bowl. "You always looked so distant and pretty, you know? I envied how pretty you were, and never really did know how to approach you, Big Sis Touji... But I guess you were just a big stinky baby who couldn't hold in her stink, ehehehe..."

The fumes flooding out of Touji wouldn't stop. Pouring out at such an intense rate, as most of the air inside the room was replaced by it. Which just brought more shame to Touji, especially as her cheeks turned bright green by the time half of the bowl was done being fed to her.

"S-Stop... N-No... No more... D-Don't wanna poopy..." Touji muttered, as she weakly covered up her mouth. She could feel the contents of her stomach wanting to get out. And if she ate any more, the gas would actually propel it all upward. She'd puke everything back out... And that still wouldn't bring an end to her suffering.

Shuuka chuckled... And showed the tiniest bit of mercy. Instead of feeding her more, she finally put away the spoon. All while taking a single glance towards her eldest sister, giggling as she noticed a very obvious wet spot in the front of her diaper. All that pleasure had caused her to lose control, which was why that spot was distinctly yellowed compared to the rest of the soggy surface. "Big Sis Touji's all stinky, and Big Sis Ayame's all wet. Such good Baby Sister's you're becoming. Big Baby Sister's proud of you both." She said, her praise sounding more and more damning by the moment.

Touji's tummy let out a louder growl, and the poor girl's hands went from her mouth onto her stomach instead. She could feel the pressure. "D-Don't... N-No poopy... Don't wanna..." Any semblance of aloofness or grace had vanished at this point. Now only a sobbing baby remained. A regressed mess of a girl, who just wanted to avoid filling her seat...

"But Baby Sister." Shuuka said, as she leaned over the bars and whispered into Touji's ear. "Your Baby Sister's already made a mess of her diaper. Filling it with pee-pee. So you can fill yours with poopy too. It's okay. That's what Baby Sisters do. Just puuuush a little..." Her words were like sweet venom. Encouraging her to do what she never wanted to do...

Touji really didn't want to do this. She absolutely didn't want to. And yet her body couldn't stem the tide... And the sweet words from her young... Her Big Baby Sister... They were impossible to resist. So on some subconscious level, parts of her body pushed to try and get rid of the pressure inside her...

All it took was a single lapse in her defenses. And then the flow began. Extra wet filth started to flood into the seat of Touji's diaper, interspersed by brassy sounds of her farts being interrupted by the poopy being flung from her hole. The more she pooped, the easier it was for the farts to get out .And the more farts tried to slip out, the more they pushed the wet mess out. It was a cycle that had no end.

Touji audibly sobbed as she kept on pooping. The back of her diaper quickly turning a disgusting brown, all thanks to the sheer amount of poopy she was able to put out. The sweet potatoes she had eaten had already been digested, and the fine way they had been diced just added to the sludge being pumped out of her. She hated every moment of it. She hated it so much, and yet at the same time it felt good. Not good enough for her to acknowledge, because she hated it, but the part of her mind that actually accepted the words of her 'Big Baby Sister' was satisfied...

She wasn't the only one that was in the process of filling her diaper. The continued orgasms that Ayame was forced to endure had eroded more and more of her control. It wasn't enough for her to wet her padding, because then Shuuka wouldn't be satisfied. It was why she had turned up the intensity of the vibrator inside her diaper once again, which then led to any semblance of continence leaving the eldest sister's body.

Ayame gasped and panted as she was forced to moan at the same time as she felt the filth leaving her. Because she wasn't dealing with tummy troubles like her sister, her poop was a lot more solid. But that didn't stop it from being the most humiliating thing for her to endure. She could feel it mushing against her rear, dirtying it... And driving even more pleasure into her. It was the worst combination, she just wanted it to stop...

And yet it just kept going. She was forced to keep filling her diaper with poopy, at the same time as she kept squirting more feminine cum into her diaper. At the same time as her sister was farting and filling her own diaper. The stink being too much for the horny Baby Sister, who couldn't hold back her thoughts...

"S-Stinky... T-Too stinky..! Lemme go..!" In her moment of weakness, Ayame cried out about the intensity of the stink. And how she just wanted to get away. She unintentionally threw her younger sister under the bus, thanks to how much had been piled onto her shoulders..

Despite her stomach distracting her, despite the feeling of all that wet poopy bubbling around under her butt... Touji definitely heard it. Which made the tears run down her cheeks even more. Sobbing like the little baby she was. "S-Sorry... Sorry..! I-I don't wanna be a stinky girl... I don't wanna be stinky..!" She was truly adorable. Such a cold personality that didn't know how to properly approach people, having thawed into the tears that were running down her cheeks. Such adorable contrast...

Shuuka was very pleased with how the two had turned out. Ayame's tomboyish and protective nature crumbled away due to all the pleasure, revealing her to be a hypocritical baby who looked out for herself. And Touji's cold behavior cracked until she couldn't do anything except cry like the stinky baby that she was. It was more than enough for her to start giggling in delight. "Oh, you two. You're just so adorable. Stinky Baby Ayame, and Muddy Baby Touji! Ehehe, maybe that's what the worlds should know you as, so they always know what to expect from the Continuity Babies!"

Touji just kept on crying, and Ayame did her best to glare towards her youngest sibling. Not that she could muster much beyond a simple cry, as she was still utterly overwhelmed by everything. Evident by the way that her diaper just kept on pushing out past her thighs, struggling to contain the sheer amount of poopy that had been packed in there...

"But you know?" Shuuka giggled as she stepped back a bit, gently lifting up her own skirt to make sure that the others could see her diaper. Especially as she let out the tiniest grunt, and they saw it sag downward in such a dramatic fashion. While she had been busy bullying them, she had been releasing lots of poopy into her own pampers, she just didn't pay too much attention to it. "It's okay to be Stinky, and it's okay to be Muddy. Because your Big Baby Sister is Stinky too, and she's definitely Muddy!"

Both Ayame and Touji knew that she had fallen far. The way that she treated them was all the evidence that they needed. But to see her diaper in a way worse state than theirs, soggy and sagging from all the wet poopy that was sloshing around inside, and how little shame she exhibited... That was enough to stun them both. They just couldn't properly say anything against her...

"So don't worry." Shuuka chimed, as she reached over the railings of both of the two cribs. All so she could stick her hands down into the cribs and push her palms up against their padding. "It's okay. You're Baby Sisters, after all. And since your Big Baby Sister's so Stinky and so Muddy, she expects you both to be even Stinkier and even Muddier. Better make me proud, you two!"

Her words were absurd. No matter how enthusiastic she was, the idea that they were babies was still absurd. And the idea that she should be their elder sister, in this kind of demented relationship, was even harder to swallow.

But it's not like they had any choice in the matter. Especially as she pushed her hands up against their diapers. It stimulated Ayame even further, causing her to helplessly bite into her pillow in an attempt to stop herself from moaning so much, while at the same time attempting to regain some semblance of control. Not that it would accomplish either. Touji was in much the same boat, though she didn't even try to fight back in any way. She just sobbed as she had been, crying her heart out as she just kept on pushing more and more filth into her seat. Pooping uncontrollably and sobbing like the baby that she was.

It was so fun to watch them like this. Shuuka had to make sure to thank both the nice Mommy and Mommy Shimai. The former for letting her use the manor to her heart's content, and the latter for teaching her everything about this. She had always wanted to be closer to her older sisters. And now? She was at her happiest. She was going to have so much fun with them, teaching them everything that Mommy Shimai had taught her...

And once they were just as obsessed as she was, then it was time to go meet with Mother, so they could make her a Baby Mommy too...