High School Jingi
Japanese title: はいすくーる仁義
Type: OVA
Episodes: 1
Source: Manga
Genres: Action, Comedy
Studios: J.C.Staff
Producers: Daiei
Duration: 50 min
Rating: R+ - Mild Nudity

The impulsive Yakuza Jouji was ordered by his boss to teach at a misfit-filled school. He now has to settle the score with a fated rival while falling head over heels for a colleague in the process.

(Source: AniDB)