The Chojin Crown, the tournament which Mantaro (Kid Muscle) reluctantly participates in. After going along with the obstacles (most of which were created to try and eliminate him), he qualified. (Source: Wikipedia)
Genres: Action, Comedy, Sci-Fi, Sports
Watch Kinnikuman II Sei: ULTIMATE MUSCLE episode 1 online — subbed and dubbed, with automatic AniList / MyAnimeList progress sync.