School

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Ojou to Banken-kun

Okusama ga Seitokaichou!

Okusama ga Seitokaichou!+!

Okusama wa Joshikousei (TV)

Omae wa Mada Gunma wo Shiranai

Omamori Himari

Omoi, Omoware, Furi, Furare

One Room, Hiatari Futsuu, Tenshi-tsuki.

Onegai☆Teacher

Onegai☆Twins

Oniichan dakedo Ai sae Areba Kankeinai yo ne!

Oniichan wa Oshimai!

Ookami Shoujo to Kuro Ouji

Ookami Shoujo to Kuro Ouji: Gishinanki – Happening Kiss

Orange

Orange: Mirai

Ore ga Ojousama Gakkou ni “Shomin Sample” Toshite Gets♥Sareta Ken

Ore ga Ojousama Gakkou ni “Shomin Sample” Toshite Gets♥Sareta Ken Specials

Ore no Kanojo to Osananajimi ga Shuraba Sugiru