- Okaimono Panda!
- Okitsura: Fell in Love with an Okinawan Girl, but I Just Wish I Know What She's Saying
- OL Kaizou Kouza
- ONE PIECE FILM GOLD 〜episode 0〜
- One Piece: Clockwork Island Adventure
- Oh! My Goddess: The Adventures of Mini-Goddess
- One Piece Movie 9: Episode of Chopper Plus - Fuyu ni Saku, Kiseki no Sakura
- One Piece: Chopper Kingdom of Strange Animal Island
- One Piece: The Log of the Turbulent Revolution - The Revolutionary Army Maneuvers in Secret!
- One Piece: Dr. Chopper's Adventure Checkup - The Ballad of a Father and Daughter
- One Piece Film: Red
- One Piece: Episode of Sabo - The Three Brothers' Bond
- One Piece: The Curse of the Sacred Sword
- One Piece: Recapping Fierce Fights! Zoro vs. a Lead Performer!
- Outlaw Star
- Occult Academy
- One Piece: Barto's Secret Room
- One Piece: Episode of Merry - The Tale of One More Friend
- One Piece: Dr. Chopper's Adventure Checkup - The Proud Dream of the Giants
- One Piece: The Movie 8 - Adventures in Alabasta
- One Piece Log: Fish-Man Island Saga
- One Piece Movie 7: Karakuri-jou no Mecha Kyohei
- One Piece: Heart of Gold
- One Piece: Episode of Luffy - Hand Island Adventure
