[Christmas, Soiling, Diapers, Pantypooping, Fat]

It was a quiet night in Chaldea. After all, Christmas was right around the corner. As soon as morning struck, many of the younger Servants would wake up to the sight of their stockings stuffed full of all sorts of gifts. And some of the older Servants, especially those with intimate bonds they shared with one another, would also find a couple of gifts that were dedicated to them. Even though Chaldea was on the verge of a dangerous takeover, Christmas would serve to bring them a bit of peace of mind.

As for Chaldea's Master, Gudako, she also had plenty of gifts to enjoy. But at the moment, they hadn't been delivered. Not because Santa wasn't there to stuff the gifts down the stockings she had hung up, although his lacking presence certainly didn't help matters, but rather because there simply were too many gifts. And everyone else was too busy with their gifts for the others, leaving a pile of gifts just laying there. Waiting to be delivered.

But where most had failed to notice and do something about it, there was one that decided that it wouldn't be right to have her Master miss out on the experience. Which was why the door to Gudako's room quietly opened, revealing the subtle sound of Gudako snoring echoing out into the hallway...

"Merry Christmas, Master..."

The soft voice of one Ereshkigal slowly drifted through the room as she tiptoed inside. Closing the door behind her so she wouldn't have to worry about somebody coming by. Especially since what she was wearing wasn't exactly flattering in any way...

Instead of wearing her usual outfit, fit for the Goddess of the Dead... Ereshkigal wanted to live up to the tradition that she had been introduced to. Which was why she was currently crammed into an incredibly tight red and white Santa dress. One that she could just barely fit into, all because of her body's rather hefty frame.

Due to the nature of summoning from the Throne of Heroes, Ereshkigal was not able to manifest without a vessel. Not only that, but she was intrinsically tied to her fellow Goddess, Ishtar. These two elements wouldn't be a problem... If she had managed to manifest inside anybody besides the girl she currently inhabited.

Ereshkigal's host was Tohsaka Rin. A prideful magus that was irresponsible with money and other important items. As a result, the girl had managed to grow rather plump by the time that Ereshkigal manifested inside her, turning her from a conservatively dressed Meaty Magus into a Girthy Goddess that was immediately astonished to find her body this well-nourished...

The way that her gut pushed out through the bottom of her dress, as well as how the dress struggled to keep itself held together thanks to the weak nature of the buttons on the front... It was all caused by Rin's previous eating habits. Habits that Ereshkigal had no real way to fight against, because every time she saw food it quickly ended up disappearing and adding onto her hips.

But it could've been something she could keep control over. If she wasn't saddled with Ishtar. Ishtar decided to really lean into her body's natural gluttony. And the more that Ishtar ate, the more started to rub off on Ereshkigal. Which meant that the poor blonde Goddess had just gotten fatter and fatter..

Every time she looked down at her plump form, she couldn't help but tremble. All because she wasn't sure what her Master might think of her like this. Sure, she didn't say anything normally... But she knew that she harbored some sort of feelings. Otherwise she wouldn't have asked for her to join her on lots of missions...

Either way, Ereshkigal couldn't just stand there and worry about her weight or her shape. No, she had gifts to deliver. Gifts that were all packed into the massive sack that she was currently dragging behind her. Admittedly, maybe she should've tried to take less presents for the first go around. Then slowly do the same process over and over. It's not like Gudako would wake up and see her, right?

"Mmmph... Ereshkigal..."

The blonde Goddess gasped in shock, only to feel the sweat run down the side of her face as she noticed that the source of the sound was just Gudako mumbling in her sleep. Turning over like nothing was wrong. Which prompted her to quietly sigh...

All while squirming a little. She could feel something trying to force its way out of her. This was another part of why she didn't like being in this body. Thanks to Rin's reckless behavior, she had managed to grow... Incontinent. Or at the very least, her bladder and her bowels were incredibly sensitive. She had been very careful to make sure that she didn't make any messes, because she still wanted to be seen like a big girl...

Which directly contrasted the way that Ishtar had progressed. Not only had she grown big, but she had accepted her stinky self. At least, to the point where she was more than willing to walk around with a diaper wrapped around her waist. Just the thought of her strutting around in one of those was enough to make Ereshkigal's thighs pinch together. She... She didn't need a diaper...

And yet... and yet... She had pushed a pack of diapers into her sack. B-Because... W-What she wanted to wish from Gudako, as she expected her to give her and the other Servants a gift of her own... She wanted her to give her some comfort. And if there was one girl that could possibly give her comfort despite her current condition, it was her Master. The sweet soul that had brought her so much happiness when they worked together in Babylonia, and even more so after she had summoned her properly.

Ereshkigal stared at the girl quietly snoozing away in her sleep, as she turned towards the stockings that had been hung up. It was up to her to figure out how to stuff all those gifts down into the stockings. All so Gudako could have the best experience. But how was she going to manage that? She was sure that she couldn't properly get them all down. And yet...

"Mmm... So cute, Ereshkigal..." Gudako's voice rang out again, as it sounded like she was vividly dreaming about the blonde Goddess. Especially as she cuddled her covers, even kissing it a bit.

The sight of her being so intimate with her covers... It made Ereshkigal blush a little. Gudako loved her that much..? She knew that she was intimate, and she knew that she was willing to make very deep and fulfilling bonds... But... M-Maybe she loved her? Maybe that was why she was willing to take her out on these missions..

To be loved by her Master. Not just in the normal friendly way, but the way where Gudako would give her eternal happiness. Probably as a lover and a bride. Ah... Ah, she shouldn't be thinking about something so impossible. She knew better than that..

As Ereshkigal's thoughts started to speed up and her heart beat harder and harder, she barely even noticed the fact that her butt was starting to leak a little stink. Nor could she really hear the sound of her brassy gas forcing its way out of her hole. Mostly because her panties and her fat cheeks trapped the hole where her exhaust had to come out...

Only as she felt the slightest hint of stickiness in her panties did Ereshkigal snap free from her daydream, as she realized what was happening. "N-No. No no no. Not now. Not now..!" She muttered in a very panicked tone, as she quickly looked around for any kind of solution. She didn't... She didn't want to make these panties dirty. They were a special gift from her Master. She had picked them out from Da Vinci's store, and she wanted her to wear them because they complimented her plump figure.

And yet she knew that if she stalled for any longer, she was going to make that pair of panties get packed to the brim. She was probably going to leak out too, and all of her filthy poopies were going to plop to the floor. The stink would be so strong that Gudako was going to wake up and notice what had happened, and then... and then..!

The Goddess took a deep breath as she tried to compose herself. She could use the sack as a toilet, but then she'd soil the gifts she hadn't managed to pull out. She could try and put on a diaper, but that would take too long and required concentration since she didn't have help to properly and snugly fit it onto her. Which meant that unless she wanted to strip down and use the corner as a makeshift toilet, she had to...

Ereshkigal's eyes wandered towards one of the stockings that were hanging beside Gudako's bed. She needed to just take one and press it against her rear. These socks were really big, so they could definitely handle her messes. Not only that, but they were also so easy to grasp that she could definitely hold it against her rear until the time was right.

The blonde Goddess reached for one of those stockings. Desperation was settling in. Even though she could vividly picture what her Master might think of getting poop in a stocking, she needed to do this. And then hopefully sneak away and toss it out before her Master noticed.

Just as she was about to grab one of the stockings, she felt her heart sink. She... She was really going to poop in one of her Master's stockings. She was going to do something so humiliating, so depraved, right into the hole that was meant to contain the many gifts that all the other Servants wanted to give Gudako. She would soil more than just her panties if she did that. She would soil the spirit of the holiday. She would...

Ereshkigal trembled. And she relented. She closed her eyes and clenched her fists as she tried her best to ignore the pressure in her stomach, all so she could just get it over with. She would accept the humiliation that came with filling her panties. Because it was so much better than pooping in the stocking and ruining her Master's special day.

It didn't take long for her panties to start serving as the filthiest thing in the entire room. After a very brief fart that made her cheeks wobble and vibrate a lot, she could feel things sliding out. Very stinky things. Very sticky things. Things that wanted to just keep pushing out of her at such a rate that she couldn't possibly imagine when it would stop.

She was soiling herself. Ereshkigal, the Goddess of the Dead, was soiling herself. And she was doing it willingly too. If Gudako was awake, she'd probably be feeling even more humiliated than she already was. But it was worth the humiliation. Because at least Gudako would be getting the chance to enjoy her gifts. She wouldn't be dealing with a poopy stocking. No, all she'd deal with was Eresh being a big stinky fatty who couldn't control herself and also wasn't suited for the role as a Santa, considering how tight this dress currently was...

Yet, despite how horrid it felt to fill her panties... It was also relieving. Maybe it felt so nice because she wasn't trying to fight against it for once. Maybe, just maybe, everything felt good because she was actually just leaning into it. Which begged the question... Maybe Rin's incontinence wasn't due to her eating too much or having bad habits... But because...

"Mmm... Nnn? What's that smell..?"

Ereshkigal blinked and gasped as she noticed that Gudako's eyes were fluttering open. Right as she was in the midst of enjoying the sensation of shitting her panties. It prompted her to push out a bit more than she was able to handle, and for her legs to give way. It was bad enough that she had packed those things full of filth, but her nature meant that she usually couldn't stay standing if she got too emotional.

Which was why Gudako was properly awoken by the sound of a very foul *squish* as the blonde Goddess hit the ground, prompting the ginger-haired Master to blink as she looked over the side of the bed to try and figure out what she had just heard.

It was then that Gudako, still just barely awake thanks to the foul smell that was wafting from her Servant, got to see Ereshkigal at her weakest. The poor Goddess was sitting in her own mess, with some of it even managing to leak out through parts of her panties. And as she stared back at her Master, all she could do was just shake rapidly. She didn't want to be seen like this. She never expected to be seen like this...

"M-Master... M-Merry... M-M-Merry Christmas!" Ereshkigal tried her best to try and turn things around. She wanted her Master to be happy. She didn't want her to worry about taking care of her or anything. No, she just needed to make sure that Gudako was enjoying herself. Even if she was currently staring straight towards an extra stinky girl...

Gudako blinked a few times to make sure that she wasn't seeing things. Because it really was an utterly absurd show. But no. Ereshkigal was right there. Sitting in her poopy panties. Practically begging for something to happen. Begging to be teased for her stinkies. Not unlike Ishtar would do whenever she filled her diaper until it was about to burst.

But Gudako... No, she wasn't that kind of girl. Not towards a girl like Ereshkigal. "Did you bring diapers, Ereshkigal?" Gudako didn't even really miss a beat. She just asked her Servant if she had made precautions. All because she wanted to help her. Just as Ereshkigal had helped her so many times before.

"M-Mmhm. T-They're in there..." Ereshkigal could feel the tears subtly rolling down her cheeks as she pointed towards the sack full of gifts, as well as a very exaggerated pack of pampers. The same size that Ishtar wore, which usually didn't leave her too bothered. Since Ishtar tended to float around and flaunt her power. Somebody like Ereshkigal, who kept her feet on the ground, would definitely end up needing some help if she were to wear diapers.

Gudako smiled as she slowly got out of bed, yawning as she reached towards the pack of pampers. She tore it open, and softly chuckled as she noticed the print on the front and the back. Prints of Ishtar and Ereshkigal, illustrations that showed them both wearing diapers. Come to think of it, these were the diapers that she had commissioned from Da Vinci, weren't they..? Heh. What a funny coincidence. She'd get to use her special diapers on one of the girls that were printed on the diaper...

Ereshkigal watched as Gudako tore a diaper free from the pack, blushing even brighter as she noticed the print. She didn't realize that these things had her image printed on them... Nor did she notice how cute she actually looked... N-No. She wasn't allowed to find herself cute. Especially not a diapered version. She wasn't meant to be loved like that.

As she let her adorable thoughts swirl around in her head, trying to figure out what she could do to make up for what she had done once her diaper had been forced under her... She ended up letting out a little yelp thanks to something rubbing up against her butt. Something wet...

"You're not getting a change until we've gotten you clean, Ereshkigal." Gudako chimed, as she had pulled out a set of wet wipes from her nearby closet. Probably used to... to...

Ereshkigal blinked a few times as she noticed something about her Master. Namely, the garment wrapped around her waist. That... she was wearing a diaper, wasn't she? Not only that, but it was slightly wet... "...M-Master..?" She muttered. It was one thing that she had managed to mess herself, but to see Master wear something like this...

"Mmm?" Gudako asked as she slowly stripped the stinky panties off her Servant, only for the girl to point towards her nighttime diapers. "Oh, these? Well, making so many contracts with all you Servants has its side effects, ehe. I only need them to stop myself from making a mess of the bed, buuuuut... If you'd like, we could match for a bit. Does that sound fun, Ereshkigal?"

The idea of wearing a diaper and walking right beside her Master. Wearing the very same garment that served to humiliate her beyond belief, yet paired with somebody she loved that also wore it. Maybe... Maybe it was going to be alright. Not to mention... Well, she would genuinely do anything to spend some loving time with her Master. No matter what went into that loving time...

"A-Alright. B-But... C-Can I change you once you've changed me?" It was a simple question. And admittedly, there was no real reason to ask it. She knew that Gudako would probably say yes. But Ereshkigal just needed to be sure. Especially since she didn't want to ruin Gudako's Christmas.

"Of course!" Gudako chimed, right as she pushed her wet wipe up against Ereshkigal's sensitive crotch. Rubbing it a little, just to make sure the subtle traces of feminine cum had been wiped away. "Alright. Now, let's get that diaper on you. Don't struggle, alright?"

Ereshkigal did as her Master told her. And if she wanted her to avoid struggling, then that was just how things were going to go. She was going to do her very best to keep her legs still. Especially as the diaper slid underneath her butt. That thick diaper that was probably going to have trouble fitting through her thighs thanks to how much she had gained.

And yet, Gudako was able to weave it through. Not only that, but she could easily tape it shut too. It was as if she was just the right size for one of these. Or vice versa. Not that she was going to dwell too much on the idea of being meant for diapers.

To make sure that Ereshkigal was as comfortable in the diaper as she looked, Gudako carefully started to rub away at her crotch and her butt, just to ensure that everything was in order. And it certainly seemed like it was. She was snugly cradled by that extra thick pamper... And it was going to handle as many poopies as she was able to push out. Even if she probably needed a change in the morning, once they were all done...

Ereshkigal looked down at her diaper, and the first thing she did... Was idly poke at it. She knew that diapers were soft and comfy, because that's what Ishtar had insisted. She just didn't expect them to be this soft and comfy. Nor did she expect it to be so... So... Perfect..? N-No. Perfect wasn't the right word. And as much as she looked forward to help change Gudako, she really... Really didn't want to be dependent on these things.

Gudako giggled as she gave Ereshkigal a quick kiss on the cheek, then a hug for good measure. "That's my sweet little Diaper Baby." She said, teasing the poor girl by whispering it intimately into her ear. Which prompted the blonde Goddess to blush from head to toe, all while Gudako just ended up giggling in delight at the sight of her being so adorable...

"N-Not... Not a Diaper Baby..!" Ereshkigal cried out, only to let out a yelp. Partly because she felt something shifting inside her again... And partly because Gudako's hands went right down to her rear. That padded, cushy rear. That plump posterior that melded with the outside softness, amplifying the feelings that came from having her padded rear groped like this...

And once that pleasure had started to roll in, it was impossible to stop. It took a few seconds, but the stink from her rear returned. Especially as the back of her diaper turned a soft shade of brown to show that she had leaked again. There was no guarantee that she wasn't going to keep pooping if they kept being like this. But... As bad as it felt to poop her pampers... It also felt good, because she was with Gudako...

Gudako smiled as she noticed the conflicted smile on the girl's face. Prompting her to kiss her, right before she climbed onto the bed she had been resting in. Pressing her fingers against her extra wet crotch, all while making sure that Ereshkigal was focused on the right place. "Come on. You asked to change me, Ereshkigal. So don't just stare... Unless you wanna touch my wet spot, ehehe..."

The teasing was strong. And truth be told, Ereshkigal almost did want to try and touch her right there. The wet spot looked so nice and warm and so alluring. But she resisted its call. She got up, while reaching for one of those clean diapers, trembling a little as she noticed the adorable print once again... Before getting to work.

Getting the diaper off her Master wasn't hard. The tapes were loose, and it was honestly rather heavy. She had peed... a lot... It was actually surprising that she hadn't managed to soak her bed, with just how yellowed her crotch had grown. And how hefty and squishy it felt to hold. Which honestly made her feel a little better about her poopy habits. If her Master was able to output this kind of pee, then her poopies weren't that bad.

Once she had disposed of the diaper, the next step was getting the diaper on her. She slid the diaper's butt right under her Master's rear, and watched as the teasing girl lifted her legs to make it easier. Sliding the midsection of the diaper through her thighs came naturally after that, and from there... It only took a few seconds to latch the tapes on, leaving Gudako looking just as pristine as Ereshkigal did just a few minutes ago.

Gudako padded her crotch to make sure that everything was aligned correctly, and that she could easily reach her crotch through the layer... Before giggling and dragging the poopy pamper-packer right into bed with her. Pulling the covers over them too, so nobody could tell that either of them were padded.

Ereshkigal was surprised to be pulled into bed. Especially since Master rarely showed off just how strong she was. But as the two started to cuddle under the covers... It actually didn't feel too bad. Even as their diapers pushed against each other...

"M...Merry Christmas, Master. And... T-Thank you for giving me this gift... I-I-"

She didn't get to finish before Gudako kissed her again. Right on the lips. And as she did, the sound of Ereshkigal's cheeks parting and releasing more filth echoed out underneath the covers, at the very same time that a hiss echoed from Gudako's crotch. The pair were filling their diapers, all thanks to the intimacy that was pouring through their lips...

Gudako smiled as she watched Ereshkigal blush in such an adorable way. It made her hug the poor girl lots, snuggling her and kissing her on the cheek. "No, thank you, Ereshkigal. You went through the trouble of trying to bring all those gifts. And in the process, I made you a cute Diaper Baby. It feels good to not worry about it either, doesn't it?"

Ereshkigal wouldn't' say that she wasn't worried. But she'd also be lying if she said she didn't feel a little better having Gudako help her like this. So she hugged her as tight as she could, kissing her back. "P-Please... Please take good care of your Diaper Baby then, Master.." She muttered, yawning as exhaustion started to claim her...

She received one last kiss in return before drifting off. "I will. I'll always take good care of you, Ereshkigal..." She could hear Gudako's sweet voice echoing through her ear, just as she drifted off to dreamland...

Ereshkigal had given the gifts that Gudako deserved... All while receiving a wonderful gift in return...