The Naito Shinjuku Family, a hereditary organization where only those of the Washio bloodline can inherit leadership. Under a calculated scheme, Wakagashira Yuki Kanemaru eliminates the 12th-generation leader, Gunji Washio (Hitoshi Ozawa), in a bid to fulfill his fateful mission of establishing Washio Kiyoharu (Kazuyoshi Ozawa), Gunji’s long-buried sworn brother, as the rightful 12th leader. In a shocking turn, Kanemaru engulfs the Naito Shinjuku Family in flames and meets his end through self-immolation. As Shateigashira Hosa (Yoshiyuki Yamaguchi) pushes to restore order by advocating for Taiga Washio (Haruto Ochiai) as the 13th leader, the situation spirals further out of control with the release of Shuyu Ohgami (Norimasa Tomie), a former Naito Shinjuku Family member, from prison...!