University karate club member Kikuo is actually the son of a yakuza boss. However, he disliked his father's business and never spoke about his family at school. One day, his father, Tatsuzo, becomes the guardian of the Yamanaka-gumi.
| Actor | Role |
|---|---|
 Tetsuya WatariNot listed | Not listed |
 Tatsuya FujiNot listed | Not listed |
| YYumi TakanoNot listed | Not listed |
| KKappei MatsumotoNot listed | Not listed |
 Yōko YamamotoNot listed | Not listed |
 Isao TamagawaNot listed | Not listed |
 Minako KatsukiNot listed | Not listed |
 Tomoko HamakawaNot listed | Not listed |
 Ushio AkashiNot listed | Not listed |
 Keisuke NoroNot listed | Not listed |
 Hyōe EnokiNot listed | Not listed |
 Eiji GōNot listed | Not listed |
 Shōki FukaeNot listed | Not listed |
 Saburo HiromatsuNot listed | Not listed |
| JJun MiyazakiNot listed | Not listed |
| TToshinosuke NagaoNot listed | Not listed |
 Keiko HaraNot listed | Not listed |