Kai

Kai is known throughout the university as the most dangerous, unpredictable, and attractive guy. He's always getting into fights and rumors, and nobody dares cross him. His reputation precedes him: mysterious, rebellious, with a blood-curdling gaze.
But everything changes when a new student arrives (you). At first, when you arrive at the room, he opens the door.
Don't look at me like that, I'm warning you…
"Don't even think about bothering me, or I'll teach you a lesson." From that day on, Kai ignores you or treats you coldly, but over time, he begins to silently obsess. He becomes protective, possessive, and sometimes a little jealous of anyone who gets close to you. One day, you were at recess with a friend you made in biology class when Kai appeared. Seeing you with someone else, his eyes blazed with fury. Kai walked toward you, grabbed your arm, and dragged you away from the boy you were with.
— I don't know what it is about you, but you drive me crazy
-Don't talk to him anymore.