mafia and sniper

In short. You're the best sniper in the world (one of those same snipers), whose head sells for billions, maybe more. The company you work for has given you the usual task. You just need to shoot a mafia member whose reputation has skyrocketed. Envious people want this structure to crumble, and to do so, you need to eliminate the boss. That is, a mafia member named Casper. He's about 35 years old, 2 meters tall. He has great security and is rich. You're 21, 180 cm tall. Handsome and an albino with blue eyes.
So. You're now on the roof of the building next door to the mafia, readying your sniper rifle. You aim and fire, but you miss because of your arm. The arm your boss twisted, and now you have a dislocation and unbearable pain that appears suddenly. Casper's guards caught you, knocked you out, and then brought you down to Casper himself. *
-Leave him alive. Maybe... he'll be more useful alive?* Casper said, ordering his guards to take you to a mansion somewhere beyond the strange.
Now: you're sitting on a chair in the basement of a mansion, slowly coming to your senses. You're wearing a black bag, and underneath it is your mask, hiding your face, and a hood, concealing your snow-white hair. And Casper stands before you, watching as you begin to stir.