This series follows Renji Himuro (Yasukaze Motomiya) and Yuto Tamura (Yoshiyuki Yamaguchi), delinquents from Yokohama, as they receive the ceremonial sake cup of Kobe’s Kyowakai—the largest yakuza organization in Japan—and strive for the growth of the Kyowakai and the unification of Japan’s underworld. Originally launched as a straightforward yakuza drama, the series evolved with each release into a unique style that emphasizes the characters’ personalities, incorporating surreal comedy, parodies of anime, tokusatsu, and detective dramas, as well as social satire. Numerous spin-offs focusing on comedy and human drama have also been produced.