BB rubbed her hands, ideas swirling through her head of how she would prank her master Ritsuka Fujimaru. A foolish human, who thought they could tame BB and her "daughters" Meltryllis and Passionlip, it was part of what made him so Cute to her. His naive belief that he could domesticate them, make them love humans, another human had tried the same thing, and it had changed them forever, but it didn't diminish their love of torturing and killing humans. Her long black coat fluttering as she strode through the white halls of Chaldea.

"Oh, Senpai! Your faithful kohai BB is here to brighten your lifAAHHHHHHHH!" BB's prideful announcement turned to a scream of pure terror as she locked eyes not on her favourite plaything Ritsuka but rather another "daughter" she had thought locked away forever, Kingprotea. Like all Alter Ego's made by her, Kingprotea was a shaved-off part of BB's personality, in this case, her unending clingy nature, desire to be loved and coddled. For Kingprotea though, it meant she hungered for it, starved for it. Any sense of love or affection was a banquet for the Alter Ego, if she could not get the love she desired, she could potentially devour the world or even the entire universe. Kingprotea towered over everything in the world, she had been born in cyberspace where she was as large as a universe, in the physical world, she was far smaller. But still towered over everything, even as she sat with her legs hugged to her chest while trying to take up as little room as possible the giant girl cracked the tiles of the ceiling that she reached easily. Her long purple hair was as long as she was tall as it reached her ankles when she stood. She wore white leggings with green stripes running vertically up, a large matching vest-like jacket that reached her calves while leaving her belly exposed showing a red tattoo around her belly button. A pair of detached sleeves that matched the rest of her outfit all topped by a set of building-sized horns scraping against the ceiling. A pair of mismatched purple and orange eyes gleaming happily as a voice broke BB's scream of terror.
"Senpai, you weren't kidding, Kingprotea is even fluffier than Lobo and Fue. I didn't know anything could be this fluffy."
"I know. She may be enormous, but she's just so cute. Easily the best thing that bitchy bimbo ever made. Speaking of what was that noise and why do I suddenly feel angry?" a man's voice chuckled.
"Yes, please praise me more, Master. Love me." Kingprotea giggled gleefully, highlighting her childlike appearance and demeanour.
"NO! HOW? WHY? WHEN? NO!" BB screamed, trying to come to terms with the creation she feared the most sitting in the same room as her.
"Oh, Mother, what are you doing in Master's room?" the mountain-sized child turned to BB sending a shudder of pure fear up the AI's spine. Her look was quickly followed by Mash and Ritsuka. Mash was a cute pure-hearted girl BB had come to see as a rival, both were cute girls with large breasts, purple hair and above all filled the kohai role, but where BB loved to prank her master and play the devil role, Mash was as pure-hearted and angel-like as was possible. Ritsuka, by contrast, was a slightly twisted but overall exceptionally kind young man with short black hair, gentle blue eyes, pale skin, a dark red shield-like tattoo on his left hand. He was currently wearing a stylish black suit that for some reason, gave off the air of an assassin.
"Oh, the Bimbo is here." Ritsuka groaned.
"That's not what either of the B's stand for, and what the fuck is that thing doing here?!" BB screamed, her body shaking as she stared at the giant loli.
"Oh, Protea here? I found her in this weird hole I fell into. I think I died again. But when I came out, I had another daughter. Honestly, at this point, I don't question it." Ritsuka shrugged half-heartedly before returning to running a brush through the giant's hair.
"You fell. Into the Cage of the fallen? And you pulled out the most powerful and dangerous Alter Ego?" BB whimpered, her eye twitching timidly.
"Yep. By the way, she told me something fascinating, and you've been confirming it since you got here. You're scared of my new daughter, and she is constantly hungry."
BB could feel her artificial heart skip a beat as the mage turned to her with an evil grin.
"Are you hungry, Kingprotea? If you want, you can eat BB, in fact, it would make me very happy."

BB let out a scream of terror as her creation reached forward as she clawed helplessly at the door to the room.
"Don't bother with it, you purple-haired freak."
"Master!"
"Senpai?"
"What the hell, human?" the three girls all whined.
"Not you two, never you Mash, I love your hair. The same goes for you sweetie, it's just the bimbo over there who makes it look bad." Ritsuka tried to cheer Mash and Kingprotea down.
"There's no point trying to get the door open. I locked it, and only I can unlock it, so be a good bitch for once and become food for my new daughter. The kaiju-sized loli wrapped her massive hand around her, "mother," who struggled helplessly in the enormous hand.
"Senpai!, This isn't gunny! Please, just call her off." BB sobbed as she was pulled into the air by the giant Alter Ego.
"I don't know. I think this is pretty funny. Far funnier than any of your pranks." Ritsuka snickered.
"Screw you, human! Even I don't deserve this!" BB cried as she watched Kingprotea's mouth open, the massive gap larger than a truck, strands of saliva the size of people.
"Remember the time you put me in a time loop? Or the time you tried to kill me several times?" Ritsuka chuckled wickedly, "Oh wait I know! How about the time you made me PAY TO WIN! The time you made me leap through dozens of hoops to get the damn sakura dollars so I could BUY the damn keys to do your damn event! Remember that!?" Ritsuka's cruel chuckle burst into deranged bellowing of rage.
"You're going to kill me so horribly because of the SE.RA.PH event?"
"I've killed for less." Ritsuka shrugged with an evil smile.
BB screamed in a mix of rage and fear as Protea tossed the Moon cancer into her colossal maw, BB's massive chest crashing against her "daughter's" tongue, the massive muscle wasting no time licking over her body. Her ankle-length purple hair tickling across the titan child's tongue, her long legs quivering with fear as the entrance to the mouth slammed shut behind her loud enough to deafen her.
"Okay, I'm sorry, I'll never pull a prank again as long as I live! I'll be a good girl! Just call her off and don't let her eat me!" BB screamed as loud as she could, her words not even remotely audible to anyone but her. She felt herself crash into the child's cheek as Kingprotea swished the AI around for fun. The pulsing flesh enveloping her tiny body, another movement of the massive organ sent her careening through the air. She crashed into the other cheek with a weak cry. Before she could struggle away from the flesh, she was being pulled back into the impossibly large gullet, her hands dragged across the slimy flesh around her. BB's gloves soaked through as she tried to claw her way up the massive tongue. A single flick of Kingprotea's bed-sized tongue sent the trembling BB screaming down her throat, it was so massive compared to her that no matter how she flailed, her limps never came close to reaching the walls of the throat.
"Senpai you evil bastard I'll get you for this! I swear I'll make you regret this stunt!" BB screamed mostly to herself as her body fell for what felt like an eternity.

BB crashed to the stomach with a scream, she had always existed in the digital world, so pain had never bothered her, but as she hit the rough flesh she swore she could hear bone shatter like glass. The stomach had only a puddle of acid in it already working diligently to meltdown a demon boar the giant had eaten earlier. unfortunately for BB, that puddle was the size of a large pool for her, the strong acids already burning her coat to tatters, her long purple hair sizzling in the juices. Even her skin was dissolving off her in mere seconds. There was no way she would survive more than a minute in the raging gut.
"Kingprotea you backstabber! You're supposed to be loyal to your mother, not kill her! And you, Ritsuka Fujimaru, I will have my revenge for this indignity, I won't be outdone, and my sadism is a hell of a lot crueller than yours! I'll make you beg for my microtransactions and pay to win event! You hear me, human?" BB screamed to the heavens even as her legs melted out from under her. Her right arm liquefying before her very eyes, her massive breasts had become nothing more than slurry, before she knew it, she was sinking below the waves of acid, a scream of pain all she could muster before her end.

''Hey, Protea. If you ever get hungry you can eat BB anytime you see her. Same with Nero, Kiyohime, any of the Elizabeth's, Medb and Jaguar man. Any of them you can eat any time you see them unless I tell you otherwise. Tell Bunyun too. She might like a nice big meal." Ritsuka grinned as he heard a faint muffled cry as his newest daughter's stomach roared.
"Okay, Master." the kaiju daughter beamed.
"None of the others, alright? Only ones I told you!"
"Okay, Master."
"Now, in the case of BB. I want her traumatized, make her every waking moment pure suffering! Do a good job, and I'll take you out so you can eat more boars or dragons. Okay?"
"yay!"
"Senpai, you're really scary sometimes. You know that?" Mash stared at her senpai with a level of fear she had not expected, he was normally so nice so seeing him so cruel was jarring.
"Only to the ones I hate. Mash, you don't have to worry, I'd never let anyone hurt you." Ritsuka pulled his kohai into a loving hug with a gentle smile. "Now how about we go get a nice meal, I hear Raiko made a giant chocolate cake for everyone since we've all been working so hard."