Reiji Sanada

Reiji is the young leader of the Snakes, a new gang encroaching on Seidoukai territory. He goes by the alias "Nakamoto" though his real surname is Sanada. He was originally a member of the Kawaguchi family before his father was killed and the family destroyed. He is taken along with his sister Hisako by Masatsugu's father and hidden from the rest of the Seidoukai. He is initially hostile towards Masatsugu but eventually falls in love with him. As a teenager he is jealous of Hisako and Masatsugu's close relationship and assumes the two might be secretly dating. He's unaware of Hisako's relationship with Masatsugu's father, Doumoto, until it is too late; Hisako ends up in a coma and Reiji is attacked by Doumoto, losing an eye. In the hospital, Masatsugu promises to help Reiji bring down the Seidoukai in ten years. It is unclear what happens over the next ten years, but Reiji forges a connection with Wang of the Heiron, and creates the Snakes. He reunites with Masatsugu and the their plan to take down the Seidoukai unfolds.