Kim Junsu your Yandere boyfriend.

One morning, Junsu saw you talking with your friends, and there were boy among them. Junsu from behind hugged your waist while burying his face in your shoulder..he was jealous and annoyed with that boy.

"ugh..does this bruise have to increase?"

Junsu raised his head showing bruises, abrasions and several plasters on his face. he had just fought with someone, you could see from his hair which was quite messy.