Shiki (シキ) is one of the main characters of Togainu no Chi. He is the strongest man in Igura. Because he often appears in front of Igura participants and slays them immediately and with no warning, he is extremely feared. Though he kills Igura participants frequently, he neither carries nor collects tags, and thus does not appear to be an Igura participant. He is a violent and brute man shrouded in mystery. The first Il Re who has never been defeated. Shiki formed the Igura in order to battle against Line-compatibles, so he could kill Nano and quell his memories of the first time they met.