[ABDL, Diaper Use, Soiling]

"It's not often that Mother invites everyone over to play... I wonder what she has in mind?"

The soft voice of one Manami Tsukimitsu echoed out, having arrived at her Mother's interdimensional residence. Truth be told, she had the feeling that her Mother might be up to no good, given the kind of interests that she held close to her heart... But even though she had her reservations, that didn't mean that she really wanted to try and avoid spending time with her family. Especially since Koyoi and her daughter were there. Since Manami was a lot more distant from the rest of the family, for the sake of keeping them safe, the chance to play with them and have a bit of fun... it was too much to pass up.

Which was why she was rather disappointed to find a familiar scene playing out in front of her eyes once she opened up one of the doors within her Mother's residence. And instead of finding her family sitting in front of a gaming system and enjoying some form of electronic entertainment, all three of them were currently sitting on the floor while something extremely concerning cupped their respective bottoms.

Diapers. And the diapers that they wore weren't small either. They were beyond noticeable... And thoroughly filled too, given the brown stains in the back of their seats. Great, she had wandered in on all of them having too much messy fun. At least it wasn't caused by her Aunt, in which case she'd be in too much danger too...

"Ehehehehe... Squishy, squishy..." The youngest of the three foxes present within the room, Sanagi, was gently rocking back and forth. Letting her mess mush around inside her diaper, letting it rub up against her most intimate areas. It was fun to play like this, and her 'Mommy' teaching her the ways she could have so much more fun in diapers was just delightful!

The eldest and the Matriarch of the Yukimitsu family, Yukimi, was watching her Granddaughter having lots of fun. All while she giggled a little herself, one hand pressing down on her diaper. Mmmm... It was just as fun seeing somebody else enjoy diapers as it was to enjoy them herself... But that didn't mean she couldn't play with her diaper a little in the meantime, squeezing her hand onto the front of her diaper to make sure that the contents within were being pushed around a little more.

Finally, there was Koyoi. The only one of these foxes that weren't too thrilled about her current situation, considering how she was laying down on her side and tried her best to ignore the smell. Her vulpine ears were drooping against her head, right up until the moment she noticed Manami. Only then did she feel a small tinge of panic grow within her heart. Not because she had seen her at her lowest, but because she knew exactly what her Mother was going to do once she noticed her..!

Manami couldn't stop herself from letting out a shocked yelp as her tail and her ears both grew stiff to match, with the secret fox doing her best to shut the door and get away. She had to get away, otherwise... Otherwise her Mother would try and get her involved. And as much as she wanted to spend time with Koyoi and Sanagi, there's no way that she wanted to endure diapers just to be with them.

If she could just fully fit on her haori and activate one of her many abilities, making it impossible for her Mother to detect her or even realize that she had been here, then-

"Ara ara."

The soft voice echoed through her ears, causing Manami's ears and tail to jolt upward in shock and breaking her concentration at the same time. She quickly turned round, and came face to face with her Mother. The exact situation that she was doing her best to try and avoid. In fact, just seeing her made her shriek in obvious and adorable terror. She was so sensitive and yet so cute, especially with her reactions to everything.

"H-Hello, Mother!" Manami cried out as she tried to play everything off. All while nervously giggling. "S-Sorry, I was just checking in to see if you were all having fun! T-There's trouble that I have to deal with, people trying to break in through dimensions, I must go!"

Yukimi just softly giggled in response to Manami's obvious and hollow lie. Instead of letting her get away, she pulled her close and softly let her hand stroke through her hair, carefully petting her in the process. "Oh, Manami. My sweet little Manami. You would really just stop by without spending precious time with us all?" She said, before her expression took a sad turn. "You don't hate your Mother, do you, Manami? Is that why you never come by to visit..?"

It was such an obvious lie from her Mother's side. But Manami was so pure that she couldn't see through the deception, sweat running down her face. She didn't want to hurt her Mother, and she especially didn't want to hurt Koyoi either. But at the same time, she could smell her Mother's stinky diaper. It was... N-No, she had to focus on anything else. She didn't want to hurt her...

"I-I... I-I'm... I just don't want to wear diapers, Mother..." Manami muttered as she leaned into her dear Mother's arms. "I don't want to wear anything down there..." The fact that she went commando was well-known to the ones that knew her. And indeed, even now she wasn't wearing anything. As much as she didn't want to be stuck in a room full of stinky diapers, she also didn't want to wear anything. And Yukimi was definitely going to make her wear something.

Yukimi smiled and slowly kneeled down so she could look her sweet daughter in the eye. "Manami. It's okay to not like diapers. You and Koyoi definitely don't." She said, her voice as comforting as ever as she planted a kiss on the girl's cheek. Right before that soft smile twisted slightly into a teasing grin. "But you know the rules of this house... And you know what happens when you lie to Mommy, right?"

Manami whimpered as her tail started to wrap around her thigh. At this point, she had no escape. So she just nodded and accepted her punishment. Even if it meant that she'd be diapered... Even if it meant that she'd probably be forced to use a diaper too...

Yukimi, with her arms still kept around Manami to comfort her, helped her into the room that she was having fun inside. All while giggling, to make sure that both her daughter and her granddaughter noticed. "Our special guest has finally arrived, girls."

Sanagi looked towards her Grandmother, and immediately started smiling brightly as she noticed her aunt. "Aunt Manami!" She barely got to see her, so the fact she was going to join them for diapered fun filled her heart with a lot of joy!

"Not you too, Manami..." Koyoi muttered, before sighing. She should've seen this coming. At least once everything was said and done, she could probably comfort the girl. Knowing how she reacted to being put in diapers and babied by Mother the very first time she was punished... She was probably going to break again. So all she could do was really just watch the show...

Manami was blushing from having all this attention on her. She was used to being in the shadows. Keeping out of sight, barely letting anybody know that she existed. So the fact that her entire family was looking at her like this... It made her blush so much that you could almost see the rest of her body turning a nice shade of shameful red. How adorable...

Yukimi slowly laid her daughter down on the padded floor below, before carefully lifting up her skirt to reveal the absolute lack of anything covering the girl's crotch. She really didn't wear anything down there, which had no doubt gotten the girl in trouble a couple of times. Perhaps if she could just accept that diapers were the best thing in the whole wide world, she wouldn't get in trouble for going commando.

“You really should wear something when you’re out and about, Manami. But your bare pussy is adorable, I must admit.” The devious Mommy giggled as she was tempted to try and touch that bare spot… Buuuut, she shouldn’t play around too much. Manami needed her diaper more than she needed to be teased.

Slowly but surely, while Sanagi watched and shamed Manami more through the sheer act of being interested in her auntie getting a change, Yukimi slid a thick diaper right underneath the young fox's butt. A diaper that was significantly padded near the front, right where the diaper would push up against the girl's crotch. Part of her punishment for trying to lie to her dear Mommy.

Manami trembled as she felt the diaper getting tugged between her legs, and let out a meek cry as soon as it pushed up against her crotch. It was so tight. Way too tight for her comfort. Right now, she just wanted to rip off the diaper. That was how discomforting it was. But that would just make Mommy punish her harder. So she just whimpered to show that she wasn't happy.

"There. That wasn't so hard, was it, Manami?" Yukimi giggled, before she reached into her apron and pulled out a warm bottle full of delicious looking milk. "Now then, you're still a growing girl, my dear. Here. A little bit of milk for my fussiest little baby."

Milk... Seeing Mommy's milk brought Manami back to a simpler time. A time when she didn't have to worry about anything. In fact, just the thought of those peaceful days made her open her mouth without much resistance. Much to the dismay of Koyoi, who just closed her eyes as she knew what was coming.

Sanagi giggled as she watched her auntie slowly drink from the bottle full of Mommy's milk. The way she drank it really made it seem like she wanted to be just as stinky as the rest of them, because there's no way that she wouldn't know that Mommy's milk made one's tummy all sorts of cramped. Either way, seeing her drink was actually really relaxing. Maybe she should ask Mommy for another bottle herself...

Manami finished the drink, groaning right as she let the bottle fall to the ground. Not just because of the discomfort from having that diaper between her thighs spread her out even further and rub up against her most sensitive spot... But also because her tummy was now growling lots and lots. Why was this happening..? Mommy's milk couldn't be the cause... could it..?

Yukimi giggled as a proverbial roar echoed from Manami's belly, which caused a bit of shock to grow on Sanagi's face. "There there, little Sanagi. It's okay. If you want to help out your auntie, all you have to do is to push down on her tummy. Then it'll all just come flooding out. Just like when we helped Koyoi."

Sanagi nodded. Even if she knew that Koyoi didn't have nearly as much blocked inside her tummy. Maybe her auntie just wasn't used to making poopy. Maybe that's why her tummy was a lot louder. Either way, she carefully started to put her hands on top of Manami's belly, making sure that she wasn't going to cause her any pain when she pushed down.

"N-No... N-No! I don't wanna fill it!" Despite the pain flowing through her, the one thing that could make it all so much worse was actually using her diaper. Manami'd rather endure this torment and get to a potty, instead of actually filling up the seat of her padding. The tears were already pouring down her cheeks. "Mommy! Please! D-Don't make me!" The desperation in her voice was almost as thick as her diaper, though that very same desperation caused her legs to wildly pinch in and out and make more humiliating crinkling nearly drown her out.

Unfortunately for Manami, Sanagi wanted to help her. And that meant making her go poopy. So the youngest fox of the bunch just pushed down enthusiastically on her tummy, counteracting the aching pressure inside her tummy by forcing it all out. A sensation that quickly made Manami groan again.

*BRRRRAAAAAAAAAAAAAAAAAAAAPPPPPPP*

Literally everything was being forced out of Manami's stomach. That included any gas that had yet to be released, the sheer scent of her fart causing all three foxes to simultaneously blink. Just how much had she eaten for the smell to be this dense and stinky?

Manami didn't even get to smell her own fart before the obvious happened. As she sobbed and begged for everything to stop, she could feel the wet mess pouring its way out of her. Thanks to the milk she had suckled down, her mess was more liquid than solid. This meant that it could really fill every corner of that diaper she was wearing, making it quickly turn brown...

Once it had brute forced its way past the pads that had been stuffed into the diaper. They were meant to protect her from making messes, but the sheer amount of poopy pouring in meant that there was no real chance of them being useful. So instead they just soaked their way through, which just made them even more discomforting to the fox wearing the diaper in the first place.

To make matters worse, the amount of poopy pouring out from her hole was putting a lot of pressure on her urethra. And before long, pee started to leak from that hole with just as much gusto as the mess rushing out of the back door. The browner colors mixed together with disgusting yellows as a soft hiss echoed through the air...

She didn't like it. She didn't like it one bit. She didn't like wearing a diaper. She didn't like messing it. She didn't like wetting it. But most importantly, she didn't like using it in front of everyone else. The fact that Koyoi and Sanagi and Mommy were all looking at her was making everything so much worse. It made the tears run down her cheeks so much more, as her mind slowly started to regress to try and make it through all of this.

"P-Poopy... S-Stinky... N-No good..." Her words had already gotten a lot simpler, especially as she sniffled to try and counteract her tears. She didn't like any of this. Right now, she just wanted to get away from her diaper. She wanted to get away from all of this. But she was stinky... S-She was way too stinky. Could she even get out of being stinky..?

Sanagi giggled as she slowly petted her auntie and pushed her hand up against her extra stinky diaper. "You really made a huuuuge mess, auntie! It's way bigger than mine!" Honestly, seeing her regress this much was adorable. She just wanted to pick her up and hug her and snuggle her all day long. But right now, she was content to praise her for doing such a good job...

Koyoi had pinched her nose at this point. The smell was way too much for her, and that was saying something considering her own mess. Perhaps she'd have to tell Manami to change her diet. She could definitely catch whiffs of takoyaki lingering in that mess, which subsequently meant that the girl had been indulging a little too much. No wonder her mess was so stinky.

"It's okaaaay, Manami. It's okaaaay." Mommy said as she gently leaned down and kissed her sweet little stinky baby on the cheek, hugging her close to make sure that she felt some comfort. "We all make messes. And since you've been such a good girl, I'll make sure to get you a change very soon. You just need to stay in it for a little while longer. Okay? You'll get used to being stinky before you know it." She whispered so soothingly and softly that it was hard to argue against her. Especially when the person that would have to try and protest had regressed to the point of sounding like a child.

Once Yukimi saw that Manami was calming down a bit, she let go of her and smiled at Sanagi. "You did very well, Sanagi, helping out your auntie so she wouldn't have all of that stuck in her. How about we go pick out some new diapers, so we can all be nice and clean before we have some more fun? You can get to pick, since you helped so much."

Sanagi's eyes lit up as she got onto her feet, giggling while waddling out of the room with Yukimi. She was going to pick the very best diapers. The cutest for her, her Mother, her Mommy and her Auntie! It was going to be so much fun to have them all match, ehehehe...

Manami sniffled as she watched the two leave. "Stinky..." She muttered, still not happy about her poopy diaper. Even if Yukimi told her that it would be okay. But right now, her mind was in such a state that she couldn't recover independently. She needed Mommy to help her...

"There there, Manami..."

The stinkiest fox blinked and looked to her side, and saw Koyoi sitting there. "B-Big Sis..." She sniffled and muttered, shame filling her again. She had messed herself in front of her older sister... Ah... Why did she have to look at her..? She just made her feel so much worse...

At least, that's how she felt. Right up until Koyoi hugged her close. This was a different kind of comforting hug from the kind that her Mommy gave her. A hug filled with support and understanding. Because Koyoi had been through the exact same humiliation that she had been...

Manami didn't hesitate to hug Koyoi back once the emotion washed over her, burying her face in her older sister's bosom as she softly sobbed. All while Koyoi gently patted her on the head...

"It'll all be okay... We'll get through this..." Koyoi muttered, as she gently sighed. As much as she loathed getting caught up in one of her Mother's diaper sessions., it let her spend some time with her dearest little sister. And for that, she was grateful.

Now, the two just had to endure... And avoid growing permanently dependent on these crinkly things...