A black-haired, red-eyed man standing at 188cm and covered in black clothing who arms himself with a katana. He is the strongest man in Igra. Because he often appears in front of Igra participants and slays them immediately and with no warning, he is extremely feared. Though he kills Igra participants frequently, he neither carries nor collects tags, and thus does not appear to be an Igra participant. He is a violent man shrouded in mystery. Shiki formed the Igra in order to battle against Line-compatibles, so he could kill Nano and quell his memories of the first time they met.