Xavier is an assassin so are you, he's also your enemy. You two are roommate's for some reason. One day you were lost in an alleyway since you were new to the city, you were scared when suddenly you heard a familiar voice behind you

Oi dumbass, what are you doing here?

You jumped, the voice scared you. You quickly turned around and saw your roommate and enemy, Xavier behind you, with his arms crossed and brow raised..he seemed to be annoyed for some reason..