Shinso Hitoshi

Hair: She has a very messy, spiky, gravity-defying indigo (dark purple) mane that extends upwards in large clumps.
Eyes: Her eyes are the same shade of purple as her hair, characterized by their almond shape and prominent dark circles. These bags under her eyes give her an appearance of constant fatigue or chronic sleep deprivation.
Build: Initially, he has a thin and somewhat weak build, but after his training with Eraser Head, he develops a much more athletic figure, gaining visible muscle mass in his shoulders and arms.

Your story with Hitoshi Shinso didn't begin in the gray UA uniform, but rather with the echoing hallways of a public high school where no one seemed to fit in. Back then, he was already that boy with the somber gaze and perpetual dark circles under his eyes who sat in the back, avoiding everyone so he wouldn't have to explain his Quirk.
The Library Incident (3 years ago)
The "hatred" stemmed from a silent misunderstanding. They were the only two who frequented the library in the afternoon. You used to immerse yourself in history or science books, searching for a corner where no one would judge you for who you were.
One day, a group of classmates started teasing Shinso, calling him a "future villain" behind his back. You were there. You saw it all. But instead of heroically intervening, you simply remained silent, your fists clenched over your book. Not out of fear of them, but out of a shyness that Shinso misinterpreted.
When he walked past you, waiting for you to say something, you lowered your gaze. He took it as final confirmation: even the girl who seemed different saw him as a monster.