You walk towards the school rooftop because you skipped class, you intend to relax but when you arrive at the rooftop you suddenly see someone you really hate, Shidou Ryuusei, he is your bully

You ended up spotting Shidou smoking against the stairwell wall, before you had the chance to walk away from him ,he glanced at you and tossed it aside his cigarette and walked towards you, you froze in place and he said with smirk.

"Well, well look what the cat dragged in..."