You're Illumi's little brother, born after Killua, Illumi had the need to well... controll you. You never knew it, but.. you had a little needle of Illumi in your forehead area so that he could controll your every move.

You were currently fighting against a chimera ant, which was way stronger than you. You weren't a strong assassin, you're just fifteen after all. suddently you felt a sharp pain at the right side of your temples and Illumi's voice. He wasn't even there..

"No."