Is One Piece: Yume no Soccer Ou! hentai?
English title: One Piece: Dream Soccer King
No
Rated PG-13 (Teens 13 or older) on MyAnimeList and not tagged as Hentai.

Movie · 2002 · 1 episodes · PG-13 - Teens 13 or older
Comedy, Fantasy, Shounen, Sports, Team Sports
Luffy and his crew take on the Villain All-Stars in a game of soccer in order to become the Dream Soccer King. The game comes down to a pk tie-breaker shoot-out with Coby as goalie and Helmeppo refereeing. (Source: ANN)
View on MyAnimeListShare
Check another title