One Piece season 21

The twenty-first season of the One Piece anime television series is produced by Toei Animation, directed by Tatsuya Nagamine, Satoshi Itō and Yasunori Koyama. The season began broadcasting on Fuji Television on January 7, 2024. Like the rest of the series, this season follows Monkey D. Luffy's adventures with his Straw Hat Pirates. The season adapts material from the "Egghead" arc, from the rest of the 105th volume onwards of the manga series of the same name by Eiichiro Oda. It deals with the Straw Hats meeting Dr. Vegapunk on the futuristic-looking island, Egghead, which will lead into an event that will shock the world.

Two pieces of theme music are used for the season thus far. From episode 1089 onwards, the opening theme song is "Uuuuus!" (あーーっす！) performed by Hiroshi Kitadani, while the ending theme song is "Dear Sunrise" performed by Maki Otsuki.