Based on

Movies like Shura Group Part 1 (2002)

Denzaburo Kato, the third generation leader of the Horii family whose territory encompasses the Yokohama area, has a dramatic encounter at a certain judo hall with a young man who would later shake up Japan's yakuza society. The man's name is Ryuji Inahara, the future president of the Inahara-kai!