"Eiji"
Japanese title: 「エイジ」
Type: Movie
Source: Manga
Episodes: 1
Status: Finished Airing
Aired: Aug 25, 1990
Duration: 48 min
Rating: R - 17+ (violence & profanity)
Studios: Production I.G, animate Film
Producers: Pony Canyon, Movic, Shueisha
Genres: Comedy, Drama, Sports
Themes: Combat Sports

Legendary boxer Keijiro Akagi's second son, Eiji, is a high school dropout and the world's worst rock guitarist. Though his father and elder brother are both boxers, he hates the sport but suddenly takes an interest in it when he meets the local champion's little sister. 

(Source: ANN)