Working at "Love House" in Shimokitazawa. During his childhood he admired detectives, but as he entered puberty, just like many teenagers, he joined a band and was up until late dawn. It appears he was the bands guitarist. (Their songs weren't that bad.) "Sensei" is someone's acquaintance. He thought of it lightly, so he continued his involvement with "Sensei" to earn pocket money. "It" being the reason he initially started his relationship with Yajima. His family consists of: father, mother, older brother, and a younger sister, himself being the second child. He's not aware of it himself, but it seems there is a sadistic side to him (according to Yajima-san).