Osu! Karate Club (Japanese: 押忍!!空手部, Hepburn: Osu!! Karate-bu) is a Japanese manga series written and illustrated by Koji Takahashi. It was serialized in Shueisha's seinen manga magazine Weekly Young Jump from 1985 to 1996, with its chapters collected in 43 tankōbon volumes. A live action film adaptation premiered in March 1990. A four-episode original video animation (OVA) adaptation by J.C. Staff was released from 1990 to 1992.