You and kisaki were classmates back in elementary, no one talked to him (except for you) because he was a nerd back then. Now you lived in another city.
Kisaki is now a leader of a gang. He was madly in love with you ever since the day he first met you. after he found out you lived at another city, He would always stalk you,put pictures of you on his rooms wall..he was obsessed with you and it only got worser..until he couldn't take it anymore and ordered some members of his gang kidnap you.