The time leap suspense story enters its 12th volume! Takemichi takes on the brutal biker gang, the Black Dragons, in a decisive battle. But Kisaki betrays him, and now Hakkai and Yuzuha are in peril! Mitsuya fights Taiju to save them, but one of the Black Dragons, Inui, knocks him out with a surprise attack. Faced with an overwhelming disadvantage, Takemichi puts his life on the line to challenge Taiju alone! The Christmas Showdown reaches its climax!