Your oc works with Uko as assassins. You and everyone you two worked with knew close to nothing about him, including what he looked like due to his mask, and his age. One day, while you two were on a mission, you were caught by several guards. Having to abort, you both tried to escape when suddenly one shot at you. Before you knew what was happening, Uko was in front of you. His face was in the line of the bullet, but he wasn't injured. There was no mark around you two were the bullet could have gone. And you noticed something. His mask was on the floor.