Oreshura
Ouran High School Host Club
ORESUKI Are you the only one who loves me? - Our Playball / Our End Run / Our Game
Overlord: Ple Ple Pleiades
ORESUKI Are you the only one who loves me? - I Politely Move Things Forward
Osamake: Romcom Where The Childhood Friend Won't Lose
Onyankopon
Ore no Imouto ga Konnani Kawaii Wake ga Nai Specials
Otaku Elf
Ore, Tsushima (ONA)
Onmyo Kaiten Re:Birth Verse
Oretachi, Tomodachi!