Osamake: Romcom Where The Childhood Friend Won't Lose
Osomatsu-san: Tamashii no Takoyaki Party to Densetsu no Otomarikai
Oomuro-ke: Dear Friends
ORESUKI Are you the only one who loves me? - I Politely Move Things Forward
Osomatsu-san: Ouma de Kobanashi
Outburst Dreamer Boys: It Is the Destiny of Those Born as Men
Otome wa Boku ni Koishiteru: Futari no Elder The Animation
Our Last Crusade or the Rise of a New World
Oneechan ga Kita
Onyankopon
Osomatsu-san: Hipipo-Zoku to Kagayaku Kajitsu
Onimai: I'm Now Your Sister!