Oniichan no Koto nanka Zenzen Suki ja Nai n da kara ne!! Special
Onmyoji
Otome Game no Hametsu Flag shika Nai Akuyaku Reijou ni Tensei shiteshimatta... Movie
OniAi
Orange: Mirai
One Week Friends
Ore no Imouto ga Konnani Kawaii Wake ga Nai. Specials
Oretachi ni Tsubasa wa Nai: Hadairo Ritsu Kyuuwari Zou!?
Otoboku: Maidens are Falling for Me!
Otome wa Boku ni Koishiteru: Futari no Elder The Animation
Ore no Imouto ga Konnani Kawaii Wake ga Nai.
Our Last Crusade or the Rise of a New World