Osu!! Karate Bu is a oVA anime that premiered in fall 1990.

About the production: the story comes from a manga, there are 4 episodes of about 50 minutes and its current status is "finished".

Its main genres are action and comedy, with themes such as School, Shounen, Primarily Male Cast and Martial Arts.

On AniList, Osu!! Karate Bu has an average score of 63%, an average score, and appears on 961 users' lists.

Osu!! Karate Bu takes place at Kansai Fifth Technical High School, a school known for its delinquents, even for Osaka. Its karate club is known widely as the toughest thugs of all. First-year Matsushita Tadashi joins the karate club to stop people from picking on him, but ends up with more than he bargained for. The series soon focuses on the captain, Takagi Yoshiyuki, the strongest gangster in Osaka, and his struggle to protect the karate club and protect the city of Osaka. (Source: AniDB)

Official synopsis from AniList.