Sutegoro: The Three Kajiwara Brothers’ Turbulent Showa History (2003)

Asaki (Eiji Okuda) is a successful sports manga author. His younger brother, Shinji (Sho Aikawa), fights in underground bare-knuckle brawls with yakuza and other fighters. A growing distance forms between the brothers as Shinji struggles for recognition in Asaki's shadow. As they navigate dangerous situations and face powerful adversaries, their lives become increasingly complicated.