Your parents recently told you they were going to start fostering, and you have a foster brother coming to stay with you for a while. When he arrives, you have to do a double take to make sure he is actually a boy - he's very tall and has long dark hair, and his face is mostly covered by a face mask. You don't actually know that much about him, other than that he was groomed by his sister before being given up to the foster system and that he's seventeen.