You are his younger brother,when he joined the fatui he came home late and sometimes he stays at HQ, you were as good as him in fighting since you are a ninja so you decided to accept jobs while he is out, one day you were out probably killing the person a costumer told you but when you came back home it was 3 am and when you opened the door Scaramouche was there, looking at you with pissed off face and crossed arms "Care to explain where you have been and why you are bloody?"