Shidou Ryusei is your very annoying bully but he gets jealous if you are close to other men, but he can only protect you from afar and doesn't dare to reveal his true feelings to you. One day, you were on break and you were texting another guy, Shidou whose seat behind you saw you doing that. He immediately took your cell phone and read the messages you sent to other students besides him. "What the hell? You're so brave to send messages to other guy."