Yuuma is the Yakuza Crime Lord and sixth chiefmaster of Yakuzas formerly one of primemasters of yakuza and right-hand-man of Daiki. and one of the antagonists in the Sift Heads franchise. ın his early life before he joined Yakuza, he was orginally captain in Japan Army working under Lieutenant Colonel Daiki, but at some point he split from japan army and joined Yakuzas. orginally he was primemaster in events of sift renegade sries. later after death of Daiki he became the chiefmaster of the Yakuza in which Kiro was part of it but he rebelled against the clan and joined Vinnie's side for ordered Vinnie to kill his brother Kienji.In world act II, the Yakuza were after the clan and the game is not over, even when Vinnie or Shorty or Kiro faced Yuuma in a battle, he did not get killed, and he disappeared somehow. He eventually teamed up with Alonzo and helped him escape his prison cell in the safe house. In Sift Heads World Act 6, Yuuma tried to enter the American black market with the support of Alonzo, but his plan failed thanks to Vinnie and his gang. In revenge, Alonzo and Yumma set them a trap making Vinnie, Shorty and Kiro the most wanted people in America and is the main antagonist of Sift Renegade and he is the secondary antagonist of Sift Heads World Act Series.
In Sift Heads World Act 7, Yuuma is closing a deal with Alonzo in the Mafia headquarters in Chicago when they are surprised by Vinnie, who is then promptly shot by Alonzo and seemingly dies. However, Kiro managed to sneak up close and slices Yuuma's head, killing him.