[Filth, Corruption, Gas, Scat, Masculinization, Netorare]

Blair was having... A day. That was the best way to describe their current state of being. Well, they had a lot of plans, but they also had a lot of frustration that they needed to work out. Namely the fact that they had been persistently blueballed by their own creative process, and the best way to deal with that was to invade another world and then force their dear friend to novelize their exploits. And what better world to invade than one that had somebody that was just like them at heart?

The goth-like apparition giggled as they made their way into a very plain-looking home, all while a pink-haired cutie was busy getting ready for school. A pink-haired cutie that never saw anything coming, only just noticing the outline of that dark-skinned beauty in the mirror before they decided to strike.

"Eh?" Osana Najimi, Blair's current kindred spirit, barely got a moment to cry out in surprise before the spirit sank straight into their body, causing them to let out a pleasured moan. The only way to tell that something had happened to them was the way that their nipples started to stiffen and poke out against their masculine uniform, as the spirit didn't need to stand out while inhabiting somebody with the same kind of body as them.

Instead, Najimi would serve as a temporary stop. Because the real target was somebody that happened to be on the youthful cutie's path through their daily life. But the first thing that they needed to do before they were ready as something simple. Reach down and grab ahold of the panties cradling their cute and rather petite posterior...

*BRAAAAAAAAAAAAAAAAAAAAAAAAAP*

Before dirtying them and letting a bit of drool run down their chin. This was not somethign that Najimi would normally do, but while under the influence of such a dirty spirit like Blair? Oh yes, it was something that easily got them off. Especially thanks to the subtle brown stain. It'd make a perfect gift for the one girl that definitely needed a boost of confidence. And through this gift, Blair could have all the fun without directly influencing her.

Now, to catch her before she ended up meeting that boy that would get in their way...

---

"Ah! Komi-san!"

It didn't take long to catch up to their target. Especially since she was the type that would easily get interrupted thanks to her communication disorder.

The girl in question? Shouko Komi. The most beautiful girl in the whole city. Unfortunately, she didn't have the personality to back up that beauty, because she was a timid girl at heart who could barely say a single word. In fact, just hearing Najimi talk to her was enough to make her freeze in place, especially since she could recognize the slightest bit of strangeness in their voice.

Komi turned around, the ground underneath her seeming to crack due to how rigid her turn was, as her body shook more and more with every passing moment. She could definitely tell that something was up with the pink-haired cutie that had become one of her first friends. It was mostly the presence of their breasts trying to push out. Well, their nipples, but the breasts were a bit bigger than normal. Probably nothing that she should get too worried about, but it was something that she noticed and she didn't want to mention but just knowing about it was adding to how worried she felt in the moment.

"Ahahaha, you're as funny as ever, Komi-san!" Najimi chimed, not bothered at all by the way that Komi behaved. Which was another tell that was something was off about them. "Say, I was wondering if you'd like a gift? You know, friends give each other gifts. Don't worry, you won't need to give me anything. I just want to give you something that could help you with your disorder! Who knows, you might even make another friend!" They giggled, all while casually pulling out a pair of dirty panties from their pocket.

Komi froze as she saw those. Those weren't... Those weren't Najimi's, were they? She hadn't seen if they wore panties or boxers, and she was honestly still confused as to what gender Najimi truly was, but just seeing a pair of panties that looked kinda dirty was enough to make her shiver and sweat more. All that she could do was look straight at those panties, not knowing what to say.

"Great! I'm glad you like them!" Najimi giggled a bit as they slapped that pair of panties straight into the girl's hands, before speeding off like nothing was wrong. "See you at class! I'll make sure to let Tadano-kun know that you've got a brand new plan in mind for making friends!"

And like that, they were gone. Leaving Komi all by herself, looking with despair in her eyes right down at that dirty pair of panties. The pair that filled her with a sense of dread that she just couldn't shake. What should she do with these panties? She couldn't just... She couldn't just stuff them in her pockets. She wasn't a pervert. Even though she knew several people that were. Why were there so many perverts at her school, anyway? She would never really know because she didn't have the courage to try and find out.

She knew that she was running out of time. If she wanted to try and make it to class, she'd have to hurry. But then somebody might question why she was running. And she really didn't want them to try and notice her for any reason. And if she wanted to avoid any weird stares, she definitely needed to deal with this panty situation.

...Najimi did say that they would help her with confidence. And she did trust Najimi, even though they were much better at communicating than she was. So with the tiniest of breaths, she hid away from the public eye for just a moment, and quickly swapped her panties out for the dirtier pair...

As they practically wrapped around her thighs thanks to how surprisingly tight they were, she felt a slight shock pierce through her. And it was like her expression changed from worry and panic for the briefest moment to the most smug smile possible, especially as she felt that filthy spot...

She quickly snapped back to normal, and walking at the best pace she could without standing out more than normally, she headed straight to school. Hoping that she could make it without causing too much trouble.

Little did she know that she was going to stand out so badly that nobody would ever be able to look away from her, once the filth from those panties had started to seep in...

---

Once Komi arrived at class, everyone's eyes were on her. Not because she was late, she actually made it just in time. They were just naturally gravitating towards her, most of her classmates and lesser friends all letting out various sounds of pure delight upon seeing her.

Her first friend, however? The boy named Hitohito Tadano? He could definitely tell that something was wrong. And that something started as soon as she sat down on her chair, and her whole body started to wobble. So much so that there was no way that he could avoid taking note of the way that she had changed.

Shouko Komi had gotten... Well, fat would be inappropriate. But her tits had definitely started to grow to the point where she could hardly keep them suppressed inside her uniform. That is, if she actually bothered to wear it. Instead she just wore a black shirt with a fishnet reaching out of the top and the bottom, keeping her breasts nice and secured. Not that you'd notice them, because of how her nipples stuck out and stretched the shirt even more, or because of the text written on the shirt. 'Communication? Yeah, I know Ass to Mouth.' It said, which just made the young man blush as he read it. When did Komi learn of that, much less learn how to change her aesthetic like this..?

"K-Komi-san?" Tadano asked, prompting the black-haired beauty to look towards him. And this time, she didn't look at him with the same sort of worry that she usually did. No, she used a cool look. In fact, she seemed a bit too cool. Had he done something wrong? He didn't know if he did, but she seemed to radiate a different set of emotions than normal.

Komi just closed her eyes a bit, sighing instead of bothering to answer the boy. He wasn't worth her time. She couldn't tell why she thought that way towards her very first friend, but that was probably why she was tossing him away. She had gotten so many more friends since then, so...

Instead of remaining seated, Komi stood up and turned slightly away from the boy that she had started to crush on. And while the teacher completely ignored the way that she blatantly went against the rules of being a student, the girl that once couldn't communicate just smiled ever so slightly as she let some of her previous worries and fears vent out.

*BRRRAAAAAAAPPPP*

Every single person in class watched as the most beautiful girl did the impossible. She farted. Not just a little feminine fart. No, the fart that slipped out from her cheeks was not just strong, but so sulfuric that it burned away at the panties that she wore. She left an actual burn mark in that feminine garment, all while the most noxious gas poured towards the windows... And the boy that had tried to befriend her.

Tadano was shocked, and he very nearly felt his soul leaving his body as the gas passed by him. It was like the intensity was trying to burn away at his mind. The other students around him weren't anywhere near as lucky, each of them passing out thanks to the bliss of inhaling the beautiful girl's gas like it was one of the most divine blessings that they could receive. All that he could do by comparison was try to work through the pain and just stare at her in confusion.

"K-Komi-san, w-what happened?! Why are you like this?!" He had to be the source of reason. Surely somebody else could notice how wrong this was! He couldn't be the only one, right!?

The response he got to his outcry was a knife getting dangerously close to his throat, and the usual killing glare of one Yamai Ren. "Don't waste Komi-san's blessing, you utter waste of space." Yamai was known to be dangerous. Especially since she had once abducted Tadano and tossed him into her closet without even thinking about anything but her dear and sweet Komi. So threatening him after he had just been exposed to noxious fumes came naturally to her.

Just as naturally as pressing up against Komi's cheeks did, the yandere letting out a moan as she inhaled that overwhelming gas. "Aaaahhh! Komi-san, bless me too! Give me a taste! Please, you gave him a taste, can't you give me some too?" She cried out, hoping that she would give her a chance. She had been good, she hadn't kidnapped the boy in a week, she could reward her for doing that much. Surely!

While Komi wasn't a fan of Yamai after what she had done, abandoning Tadano gave her a brand new kind of perspective. She could use that girl for something much more fun. Something that really made her embody the kind of person she was at heart. Not the insane murderer who would kill to get close to her, but something more... Obsessed.

Yamai let out a brief cry of joy as she felt the beautiful girl's hand on the back of her head... Only to shut up as she was forced to put her lips up against the hole between those cheeks. All while Komi remained perfectly still, letting everyone see her pussy as she continued to exude dominance through her actions.

Every single person present, including the teacher, watched as Komi did something utterly disgusting. She shat herself. She used the yandere that obsessed over her as little more than a hole for her to fill with her filth. Thick, reprehensive logs of pure poop poured out of her hole and down Yamai's throat, bulging the poor girl out as she was forced to swallow something that disgusting.

Not only that, but as she let more and more of that filth pile out of her hole, something started to grow up front. Her pussy quickly started to expand, only for everything inside it to be pulled out into the shape of one dominant looking cock, the thick shaft making her look even more dominant. Especially since it was bigger than ever single other cock in the class... And it was still flaccid.

Even though Komi had suddenly inverted one of her most precious spots, she didn't care. She was letting that fat cock hang free as she kept shitting. She was getting rid of all of her doubts, all of her worries, and especially her weaker self that couldn't communicate. All of that was being packed into her turds, which Yamai was more than happy to swallow.

Tadano couldn't believe what he was seeing. The beautiful Komi-san... She was... She was just letting loose. Shitting herself like a filthy maniac, using somebody else as a toilet. The worst part of what he was seeing? It was the fact that his cock was tenting his pants, the biggest blush filling out his cheeks as he did his very best to not cry out and humiliate himself even more than he possible could.

Eventually, Komi's shitting spree came to an end. And with the same air of dignity that she had maintained since the moment she stepped inside, she lowered her leg and casually let go of Yamai, who fell to the ground with a dizzy grin on her face. Eating all that shit couldn't be good for her. But somehow, the black-haired beauty wasn't finished.

Tadano watched as that cock, which was even bigger than his arm, was pointed straight at him. And instead of doing anything complicated, Komi just let out a brief sigh and let nature run its course. A stream of golden and disgusting liquid poured over the boy, not only dirtying him and letting her scent soak into him, but it also marked him as her property. Because that was what Tadano was to somebody as beautiful and as powerful and as dominant as Komi now was. Property.

Komi smiled. No, she smirked. As she let her still-pissing cock casually droop down and make a mess of the floor below, all while she reached down and grabbed the yandere that had served as her toilet. A girl that was quickly starting to grow a bit... Thicker. Not in the good kind of way either, the kind of way where it seemed like she was about to burst from a sudden onset of overwhelming muscle.

Tadano and the rest of the class just watched as she left. And most of the other simps followed right behind her, leaving the classroom entirely empty, except for the boy that had been marked. He was left all alone, even the teacher couldn't stop herself from chasing after that dominant girl.

He sat there. And he quietly climaxed, dirtying his underwear even more than it already had been thanks to Komi's piss soaking into his outfit. Just sitting there...

Waiting for his owner to tell him what to do...

---

The day came and went. And the afternoon sun quietly shone in through the classroom window as evening started to pour in. That somber orange sun casting its submissive light on the most submissive boy in the entire school.

He had waited all this time for her to return. Wearing that piss-drenched uniform like it was completely and utterly ordinary. Why would he do anything else? Komi had shown him that it was all that he was worth. He genuinely didn't know what else he could do after she pissed all over him...

Thankfully, his prayers were answered. Because he could smell her coming. There was nobody else that smelled that dominant. It was a smell that overpowered even the piss on his body, causing him to let out panting noises as he shifted in his seat like a dog. He couldn't be happier over the fact that she had returned.

What did he see once she finally walked in? Why, he saw what had happened to Yamai. Gone was the yandere that looked like any other girl. In her place was a big filthy man, who was bulging with muscle as he held his goddess in his arms. Just taking a single whiff of his goddess' scent was enough for him to thrust his hips pathetically forward, causing his already dirtied panties to grow even dirtier, the sticky semen staining it further brown.

And Komi? She had gone from just wearing a dominant shirt that showed off her tits to wearing a pair of yoga pants that clung to her enormous cock like a sock. No, upon closer inspection there was a third leg cut out for her rod, letting her cock breathe while remaining protected by the tight fabric. Or rather, letting the world around her stay ever so slightly safe from her intense musk. But once she peeled it back like foreskin, everyone around her would break. It certainly didn't help that she had started to grow ever so slightly tan as well.

Tadano just watched as she slapped her disgusting simping bara and landed on her high-heeled feet, her swaying hips causing his eyes to follow her ass as it bounced from left to right. He couldn't pry his eyes off her. He never wanted to pry his eyes off her, even if she had humiliated him with such ease.

Komi walked right up to him. And she leaned close enough for him to finally hear her speak. Finally whisper one tiny word into his ear, one ear that would break him and render him a complete and utter pet.

"Cuck."

Tadano squirted into his utterly ruined boxers for the twentieth time that day, all while his goddess kicked him onto the ground and sat down on his face, all while he could hear the simp crying out and playing with his cock in the background.

The last thing he saw before his consciousness gave up and he devoted his entire being to Komi at all times... Was her naked asshole, and the turd that was trying to squeeze out of it.

Komi had learned to communicate, all thanks to the panties that Najimi had given her. And what she wanted to communicate most of all was one simple thing. One thing that defined how she interacted with everyone that wasn't her. How everyone belonged to her, and how they were her toilets. Something that was emphasized by the gas that poured out from her hole as she let that shitty Tadano swallow her latest turd. The brassy sound that had begun all of this…

*Braaaaaap...*