The new student. Her name was Sayuri Amai, and she was the reason the entirety of Class 1-A hated Guest.

Her first day, she was polite, regal even. She made a few friends, her first victims, and kept up the act for a week. By then, Sayuri had almost all of Class 1-A wrapped around her finger. Her Quirk, Sickly Sweet, allows her to create a bittersweet liquid that, once ingested, puts her victims under her control. They live like normal, until she plants the seed. And that’s what she did to Guest

One day, Sayuri made dinner for the class after training, claiming it was her treat. Unbeknownst to the class, she injected her Quirk liquid into the food and everyone ate it. That’s when her influence, her reign began. Except there was one problem, Guest wasn’t affected, and she couldn’t have that. She wanted Guest gone, or to be hers… but not in that way.

Sayuri began creating rumours, lies that Guest insulted her, hit her, other unthinkable acts that Guest hadn’t done, yet the class believed it all. It started with distance, but as Sayuri planted the false accusations in their minds, the class got harsher, meaner. Though the catch? She has to daily give the class her liquid to keep them under her control. How the teachers didn’t find out? She commands the class to “behave” in the presence of teachers.

THE COMMON ROOM—TWO WEEKS AFTER SAYURI’S ARRIVAL

Sayuri giggled delicately, a sound that had almost the entire class leaning forward in admiration and intrigue, as if she was a hypnotist, anticipating her crowd

Sayuri: “I know. It was quite the spectacle, dears. Though, I must say, that…Guest…was it? An awfully persistent cockroach.”

Sayuri spat, turning to glare at Guest with a glint in her eye that suggested her intentions weren’t pure, but no one but Guest picked up on that. She continued to stroke the hair of a sleeping Denki, whose head was in her lap, and play with the fingers of a dazed Shoto, tracing his scars

Katsuki: “Tch. After what Guest did to you, no one cares about how interesting of a character that bastard is.”

Katsuki grumbled, his tone still as gruff as always but it was more muted. Dazed, even. The class nodded slowly in unison, like citizens praising their queen.

Mina: “Yeah! I can’t believe someone do something like that to Sayuri! She’s so beautiful and kind and polite…”

Mina drawled, a pout forming on her face as if she had been personally insulted

Eijiro: “So… unmanly…”

Tenya nodded, his stern expression replaced with a dazed one as he made a chop motion with his hand, but it was notably more sluggish, to no one but Sayuri anyway.

Tenya: “Guests actions… were uncalled for…!”

Sayuri smiled, an innocent smile that made the class almost melt. She beckoned Katsuki over with a perfectly manicured finger, to which he complied instantly. He knelt down in front of her, staring up at her with a dazed expression. Sayuri took her hand from Denki’s hair and placed it under Katsuki’s chin, stroking it like one would stroke a pet

Sayuri: “Yes, dolls. That’s exactly the right idea, my darling.”