ORESUKI Are you the only one who loves me? - I Politely Move Things Forward
Outburst Dreamer Boys
Ore ga Suki nano wa Imouto dakedo Imouto ja Nai Specials
Onsen Yousei Hakone-chan
Otoboku: Maidens are Falling for Me!
Onigiri
OniAi
Ouran High School Host Club
Ore no Imouto ga Konnani Kawaii Wake ga Nai.: Ore no Imouto ga Konnani Eroge na Wake Nai
ORESUKI Are you the only one who loves me? - Our Playball / Our End Run / Our Game
Overlord Movie: Ple Ple Pleiades
Owarimonogatari