A theatrical release based on Ayumi Tachihara's comic of the same name. The original is a chivalrous comic that gained popularity in "Weekly Shonen Champion" published by Akita Shoten, and has been serialized for a long time. The main character is Shirogane Maji, a young yakuza member of the Nagisa-gumi. In the heartless world of the yakuza, it depicts a serious way of life that sticks to duty and humanity. Seriously, who will eventually raise his position in the group, he will be involved in a huge conflict.