Company member Hiroki Moriyama shows up at United Sanctuary Branch, but Branch Chief Ren and Tetsu are out. As the representative of the branch, Taiyou challenges Hiroki to a fight.

In order to prevent Hiroki Moriyama from recapturing Ryuzu`s former lab, which is still being investigated by Ibuki and the others, Taiyou has a rematch with the insufferable Company agent. Through the fight, Taiyou closes in on the secret within Hiroki`s heart, the reason he obstinately clings to the self-styled title of "champion of justice."