[Me Me Me TF, Mass TF, Corruption, Twinning]

"Ehehehehe! What's the matter, Senpai? Don't you wanna watch your favorite Kouhai? I know you like it, just let me in!"

Gudao pressed his back up against the wall, as he hoped that the doors of his closet would hold. All while panting and gasping, his heart beating against his chest. How did things end up this bad..?

How in the world did BB somehow get worse?

Well... It seemed as if she had been on the internet. And one of the few viruses that still remained on the net had decided to grab ahold of her. Since she was originally an AI that was made to maintain the Moon Cell, a system that didn't exactly have viruses in the traditional sense, she was vulnerable. Leaving her with a brand new purpose. A brand new self. A brand new idea of what she had to do...

It all happened so fast. Once she had been converted, she appeared on her Master, nay, her Senpai's computer. And she giggled, as she showed off her brand new body. Instead of being dressed in that drab outfit that made her look like some kind of mastermind, she had exchanged it for a dress that was just so... soooo... painfully short...

So short that at the right angle, it was impossible not to notice the outline of her naughty bits. So short that her ass was always sticking out under it, with the strip of her panties really wedged in between those cheeks. And it didn't cover much up there either, leaving her boobies to shake around just the same.

Indeed. That's what she had done the moment she ended up on her Senpai's computer. Putting her hands behind her head, and shaking her hips back and forth. All while giggling and chanting, as she seemed to duplicate over and over.

"Come on, Senpai. Don't you wanna Be Be Be Me Me Me?" Those two words, always repeated thrice over. BB... No, BBB had become a real menace. And the mesmerizing sway of her hips was really hard to fight against. The mesmerizing bounce of her boobies as they went left and right almost captivated him...

But thankfully, his Kouhai was there to save him. Mash managed to pull him away, snapping the connection between him and BBB. But the AI Kouhai didn't stop. Even if Mash had gotten in the way, BBB didn't even think of stopping. Of course not.

And just as quickly as she had saved him, did she fall prey to the same constant swaying. Gudao, stuck on the floor, was forced to watch as his Kouhai began swaying just like BBB did on the screen...

Bit by bit, she changed. Her hair grew longer, until it reached the same length as BBB's. That very same long hair shifted until it was a lovely purple color, just like BBB's. And her clothes changed, until her cute BBButt was on display, just like BBB's. All while she swayed more and more, giggling in delight just like BBB...

Until Mash was no longer. And another copy of BBB was now there. She wasn't just able to replicate in the digital sense... She had outright overwritten Mash's Saint Graph, in a matter of mere moments with nothing but her shaking hips. Something that terrified Gudao beyond all belief.

Before Mash was able to pull him into the alluring and utterly mesmerizingly swaying hips, Gudao managed to get on his feet and run out of his room. Hoping that he could make it to a safe spot. Hoping that his other Servants were able to resist. Many of them had mental resistances, he knew that they did. Of course they'd be able to resist. Right? Right?!

Unfortunately, BBB proved that she was better than them all. Better than any of his Servants, as she proved that they would fall victim to her dance. Fall victim, and become just as she was. It didn't matter who they were, because just the sight of her swaying hips would infect her.

He saw it happen several times as he ran down the halls. At first observing the yandere trio, Serenity, Kiyohime and Raikou each getting ready to defend their Master from the clutches of somebody just as foul as them. But as they saw her dance on one of the screens that lined the halls...

It didn't take long for them to match her in every way. Swaying their hips, as their yandere tendencies synchronized with hers. Leading them to echo her mantra, especially as Gudao ran right past them. "Won't you Be Be Be Me Me Me, Senpai?" Each of them giggling just like BBB, as they very nearly caught him...

They weren't the only ones that fell either. He caught a glimpse of one of the Saberfaces getting turned as well, the altered Lancer Artoria in the midst of her transformation as her sexy body was compressed into a more youthful form.

Both Lily and Artoria Ruler were present, yet they managed to avoid looking at BBB swaying around on screen. But they couldn't stop looking at the converted Lancer Alter. And before long, both young and old versions of the King of Knights were forced to follow her moves. Swaying their hips left and right as their blonde manes were colored a tender shade of purple, each of them giggling as they became BBB as well...

Gudao didn't stop to try and help them. As much as he wanted to. As much as he wanted to save them from what BBB was doing, he knew that he wouldn't be able to. Because if he saved one, then another would just take her place. On and on and on again. It was futile... And that made him run faster.

Past Drake, whose booty was swaying as she was converted. Past Artemis, the Goddess' love twisted into complete obsession. Past Kama, who now knew whose love she craved. Past Kiara, who just laughed in delight as she was converted.

Even the two Koyanskayas were helpless, the would-be-beasts becoming another copy of BBB in time. Swaying like the sisters that they were. Swaying alongside the true Tamamos who had been converted as well, together with the Neros that had been seduced as well.

Gudao could tell that many of his female Servants had been converted. And it wasn't hard to tell that many of the males had as well. He just didn't notice who was who. Just that all of them had become BBB. All of them repeating that Mantra.

"Won't you Be Be Be Me Me Me, Senpaaaai?"

That infernal mantra. It was impossible to escape. No matter how far he ran. No matter where he tried to escape to. There'd be another BBB. Or if there wasn't another copy of BBB, there'd be a screen for her to project herself onto. It was impossible to run. Impossible to hide. Simply impossible...

So he did what he could. Because even in impossible situations like these, he was able to escape. He was able to make it out of there. And that was why he ended up picking a simple closet to hide inside. A place where technology couldn't find him.

Sure, it wasn't a good place to hide. It was actually Mash's closet. He could tell based on the clothes that were hung up beside him, as well as the swimsuit that she always looked so cute in. But he had to endure. He had to keep strong. Because if he didn't, then... Then he'd really Be Be Be Her Her Her...

Gudao let out a yelp as he felt his pants tightening. No. No no. He shouldn't be aroused by the thought of becoming BBB. He shouldn't. He should find a way to make her obey. Find a way to purge the central version of her. Only then... Only if he got the real BBB, would he be able to make her stop...

But he wouldn't get that far. He knew he wouldn't. Especially as he heard the door to Mash's room open, and a giggle pour out. Especially as he felt his heart nearly stop, as he knew his time was running out.

"Are you in here, Senpai? You know you can't hide from Me Me Me!"

BBB's voice echoed from the other side of those doors. He could hear her. He could smell her. He could feel her. He had to do something. Otherwise, she would catch him. He would be forced to... to watch her hips sway... to watch her boobies bounce left and right...

Was...

Was it so bad..? It's... It's not like she was hurting people... S-Sure, she was... She was making everyone into her... But she asked them... She asked them to be her... And they did, so...

Gudao let out a soft giggle that sounded almost a little feminine. All while his pants tightened a bit further. All while his panting and gasping grew louder. There was nothing he could do to hide at this point. All because BBB had infected him. And he was finally falling victim to the infection.

Of course he couldn't run. He was the very first that saw her swaying her hips side to side. And just like all the others, she had asked him to Be Be Be Her Her Her... Ehe... Ehehehehe...

The doors to the closet opened up, and Gudao was faced with exactly what he had feared just moments prior. What he no longer feared, as he understood that he shouldn't have been running in the first place.

"There you are, Senpai!" The horde of BBBs that had gathered in the room were all giggling as they gazed upon the boy that was sitting in the closet. The boy whose hair had already turned purple, thanks to their contamination. Thanks to how he had been infected and violated by their swaying hips.

Gudao giggled a little as he watched them all start dancing yet again. Swaying their hips back and forth in that mesmerizing way. Swaying back and forth. Over and over. Just as they had done every other time. Just as they had done to seduce all the others and convert them into more of her.

"Won't you Be Be Be Me Me Me, Senpai?"

Yet again, they asked the same question. As their tits bounced back and forth. As their plump posteriors went left and right, impossible to ignore thanks to how tiny their dresses were. He couldn't avoid answering their question this time. No way.

And his answer came in the form of his Command Seals disappearing, appearing on the thigh of one of the BBBs. The actual BBB, right there in plain sight. Not that he would've noticed. Not that he cared.

Not that he was even a he for much longer. Gudao giggled just as BBB had, getting up as he swayed his hips left and right, his pants disappearing and his top turning into the exact same dress as all of them wore. All while his hair grew longer, until it was the exact same length and shape as BBB's...

His masculinity vanished, replaced with two massive red flags that now barely fit in her dress. Just as her butt was left completely uncovered by the same dress. The dress that all the others were wearing as well. The dress that symbolized that she had become just like them.

"I'll Be Be Be, ehe!"

Gudao had fallen. And BBB had claimed her Senpai completely. There was not a single soul in Chaldea that could fight back against her power. Nor fight back against the hypnotic influence of her hips. Everyone that had seen her had been infected, and forced to dance just like her.

BBB was now all that really was. And the many versions of her couldn't help but giggle in tandem. All of them pleased with this outcome. Of course they were.

What else could they Be Be Be, but Me Me Me?