Monji has earned the title of second generation boss of the Black Black Black Skull Gang. He promised Takumi to conquer the country with the Black Skull Gang but in reality, he has trouble seeing it happen. While confused, he builds friendships with Aoyama and another transfer student, Rei.
Unfortunately the movie GACHI-BAN III is not yet available on HBO Max.
| Directing | Takashi Motoki | Director |
| Writing | Masao Iketani | Screenplay |
