Nekketsu Kouha Kunio-kun: Eternal White Uniform Psalm: memories forever

There was a series of disturbing developments around Kunio. Riki, Tadokoro, and Riki's senior, The Blue Emperor, were attacked by someone one after another. It was all the work of Sabu, a member of the Kanto Sanwakai, who was after Kunio's white uniform. Driven by remorse, Kunio vows to avenge Riki and the others, and gradually loses himself in anger.