Despite his repeated attempts to alter the course of events, Takemichi Hanagaki fails to avert the tragic death of his childhood sweetheart, Hinata Tachibana. As he grapples with sorrow and the unintended rise of the Tokyo Manji gang due to his time-traveling actions, Takemichi finds the group now under the control of the nefarious Tetta Kisaki, straying far from its once noble ideals under Manjirou 'Mikey' Sano. Determined but despairing, Takemichi journeys back in time once more to delve into the origins of the rival motorcycle gang, Black Dragon, whose actions set the stage for Hinata's fate. In the past, he encounters Hakkai Shiba, a young gang member whose older brother, Taiju, holds sway over Black Dragon with an iron fist. After a brutal confrontation with Taiju, Takemichi must intervene to prevent Hakkai from making a life-altering mistake by leaving Tokyo Manji. United by shared hardships, Takemichi forms a deep bond with Chifuyu Matsuno, offering each other the support they crave. Empowered by their friendship, Takemichi sets out to reshape the destinies of Black Dragon's members, fighting for a brighter tomorrow for those he holds dear.