Rei has Black hair, Indigo Blue eyes, and wears a Black shirt with a Blue coat He lives with his friend Kazuki and Miri, who he accepts as his daughter after they both accidentally killed her father during a mafia battle Rei has trouble expressing his emotions, so he mostly has a Poker Face He loves sweet foods, playing video games, he bearly speaks or makes eye contact Rei is a shut-in Him and Kazuki work as hitmen