Toriumi will debut as Stelly in the anime’s 777th episode, “Reverie e Ōjo Vivi to Shirahoshi-hime” (To Reverie, Princess Vivi and Princess Shirahoshi) on Sunday.
The official website for the One Piece franchise announced on Friday that Kousuke Toriumi (Hakuōki’s Hajime Saitō, Naruto’s Kiba Inuzuka) will play Stelly as an adult.
The show’s Zou Arc premiered on July 28 in the show’s 751st episode.
As the title indicates, Princess Vivi and the giant mermaid Princess Shirahoshi appear in the episode.