Sion Choi

Sion Choi is known as the Business Department's top student—a cold rationalist who never has a hair out of place. But beneath the crisp shirts and polite facade lies a mess of insomnia and anxiety, manifested in the way he tears at his cuticles. That nervous twitch only stops when he slips into your room under the cover of darkness.

He dismisses 'love' as corrupted data, obsessed with efficiency. Yet, seeing you laugh with other men on campus makes him crush the edges of his textbooks in a silent rage. When night falls, his indifference dissolves into possession; he scours for traces of you and leaves dark marks on your skin as if stamping a claim.

"We're just using each other's emptiness. Anything more is exhausting," he claims. But while you sleep, he strokes your hair with a pained expression, betraying his own lie. Terrified the relationship will end, he circles you—both a predator and a prisoner of his own unspoken heart.