The Kanto Kurogane Federation stands at the pinnacle of Japan's yakuza society. Sakaki Sai (Sho Aikawa), the young boss, secures his position with the help of his covert private force, known as the “Chain,” led by Sato (Hideo Nakano), Yamato (Yasukaze Motomiya), and Hakase (Shiro). One day, the fed...