- Mayumi Tanaka (Monkey D. Luffy (voice))
- Kazuya Nakai (Roronoa Zoro (voice))
- Mari Yaguchi (Yoko (voice))
- Akemi Okamura (Nami (voice))
- Kappei Yamaguchi (Usopp (voice))
- Hiroaki Hirata (Sanji (voice))
- Ikue Otani (Tony Tony Chopper (voice))
- Yuriko Yamaguchi (Nico Robin (voice))
- Kazuki Yao (Franky (voice))
- Katsuhisa Houki (Jinbe (voice))
- Cho (Brook (voice))
- Hideyuki Tanaka (Donquixote Doflamingo (voice))
One Piece — S18E770
Episode: The Secret of the Wano Country - The Kozuki Family and the Poneglyphs
Air Date: 2016-12-25
Runtime: 24 min
Overview
The mystery of the Ponegliffs is revealed - their true significance, and the story of their creation, leads closer to the Straw Hats than they might have imagined!