His real name is Sora, a squad leader in a teenage gang of gangsters called Tokyo Manji Gang, a gathering of street brawlers, their leader is Manjiro Sano. He grows up in a believing family, where Yin and Yang are sworn to the power. For them, Yin is something that has a powerful force, and Yang is something that suppresses it. Unlike the other children in the family, Sora is the only one who has both powers. He hates his father, because he took away his childhood by torture and training.