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?!
The time has come for the
Ketsuno clan and Shirino clan
¡Llegó el día en el que los Ketsuno 
y los Shirino pueden unir fuerzas
Chegou a hora dos Ketsuno e dos Shirino