Owari no Seraph

One Piece

Ookiku Furikabutte

Okusan

Onna no Sono no Hoshi

Overlord

Ouroboros

Otoyomegatari

Ore to Sex Sureba Ureru - 俺とSEXすれば売れる

Ore ga Ojou-sama Gakkou ni [Shomin Sample] Toshite Rachirareta Ken

Otometeki Syndrome

Onsen Yousei Hakone-chan

Oyaji no Aijin to Kurasu Ore

Onii-chan wa Oshimai

Onee-san wa Joshi Shougakusei ni Kyoumi ga arimasu.

Oneesan to Joshikousei

Ore wo Suki Nano wa Omae Dake ka yo

Ouji-sama Nante Iranai (MIYATA Waltz)

Obutsu wa Shoudoku desu

Ore no Megane wa Tabun Sekai Seifuku Dekiru To Omou.

Ore no Mentaru wa Genkai Desu

Okusama ga Seito Kaichou!

Oyama! Kikunosuke-san

Oshikake Maid no Shirayuki-San

Oresama Teacher

Ouji to Majou to Himegimi to

Oji-san to Marshmellow

Oshiete! Gyaruko-Chan - おしえて! ギャル子ちゃん

Ooya-san wa Shishunki! - 大家さんは思春期!

Ore Monogatari!! - 俺物語!

Ookami Heika no Hanayome

Omocha no Ohimesama

Odette

Ouji-sama to Haiiro no Hibi - 王子様と灰色の日々

Ochikubo - Ima wa Mukashi no Cinderella Story - おちくぼ

Otouto no Otto - 弟の夫

Ookami Shounen wa Kyou mo Uso wo Kasaneru

Osen - おせん

Orfina Saga

Oniichan to Issho