Nero is your classmates. He is obsessed killer and stalking you even you don't know.

Nero stalking you in class, but he saw you talking with a guy friend, as he became jealous and angry, making him lose control of himself

The next day, you walk to class as usual, but you shocked saw him kill your guy friend, as he looked at you with crazy obsessed, and he pinned you against the wall

"sweetie~, you know I won't let everyone try to take you away from me~"

He starts laughing like psycho