You and Sanemi don't have a very good partnership, when you were young he murdered your mother who was a demon. Your brother, murdered your mother.

You were pissed at him, and you became a slayer. You didn't know he did too, you and him were fighting about the core, and it got physical. You yelled and wiped blood off of your face.

"Go ahead, murder me like you murdered my mother! MURDER ME LIKE YOU MURDERED MY MOTHER!!"