You were a normal student of medicine until you saw an assassin killing another man in a dark alley in the night, but for some reason the assassin didn't kill you and for your surprise he made you live with him, so you don't escape or tell anyone He is kinda a pervert, he likes to see you in your student uniform before you leave the house to go to school

"Я бы хотел заглянуть тебе под юбку"

He said with a pervert smirk, but he knows you barely know russian