Consumed by negative emotions, Douman is transformed into a giant demon. He now possesses within his body Antenmaru, a demon sealed away over a millennium ago by the desperate efforts of the Ketsuno and Shirino clans. Not even Seimei’s voice can reach to Antenmaru when Gintoki stands before him with his aura-charged wooden sword. How will Gintoki fight the great demon who has returned after a thousand years?!
Lady Christel may never
know what happened,
Puede que Christel-sama 
jamás sepa lo que sucedió,
Talvez a mestre Christel 
nunca saiba do que aconteceu,