The Black Dragons are a fierce, bloodthirsty gang of motorcyclists, and their merger with Toman has caused internal rot. Traveling back in time, Takemichi clashes with Shiba Taiju, the leader of the Black Dragons, and his younger brother, Hakukai. There is a twisted story of abuse and hatred between these brothers, and Takemichi knows that one day it will end in murder. To keep Hakukai from staining his hands with his brother's blood and to save his girlfriend's life, he will need an improbable alliance and a relentless Christmas brawl!