By 174 AG, Hiroshi grew remorseful over his actions and tried to reconcile with his daughter, Asami. When Kuvira threatened Republic City, Hiroshi was momentarily released from prison by Lin Beifong and helped to equip the prototypes of the hummingbird mecha suits with plasma saws. He ultimately sacrificed his life to give Team Avatar the opportunity to take down the enormous mecha suit and its spirit energy cannon by cutting through its platinum armor and giving them an entry.