Is One Piece Film: Gold Episode 0 - 711 ver. hentai?
No
Rated PG-13 (Teens 13 or older) on MyAnimeList and not tagged as Hentai.

ONA · 2016 · 1 episodes · PG-13 - Teens 13 or older
Action, Adventure, Comedy, Fantasy, Shounen
A short web prequel to One Piece Film: Gold featuring the nine Straw hat crew members on the ship, planning what to do when they arrive the Casino.
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