One Piece Film: Strong World Episode 0
Japanese title: ワンピース　フィルム　ストロングワールド　エピソードゼロ
Type: OVA
Source: Manga
Episodes: 1
Status: Finished Airing
Aired: Apr 16, 2010
Duration: 18 min
Rating: PG-13 - Teens 13 or older
Studios: Toei Animation
Genres: Adventure, Fantasy
Demographics: Shounen

Set over 20 years prior to the main One Piece story, this limited release OVA chronicles the confrontation between Gold Lion Shiki and Gold Roger as well as other events around the world around the time of the Pirate King's execution.