Seinen

Origin

Oroka na Tenshi wa Akuma to Odoru

Osananajimi ga Zettai ni Makenai Love Comedy

Osananajimi Kanojo no Morahara ga Hidoin de Zetsuen Sengen shite Yatta

Osananajimi to Kanojo to

Osananananajimi

Oshi no Ko

Otaku ni Yasashii Gal wa Inai!?

Otogi Matsuri

Otona ni Narenai Bokura wa

Otonari no Tenshi-sama ni Itsunomanika Dame Ningen ni Sareteita Ken

Oukoku E Tsuzuku Michi

Ouritsu Mahou Gakuen no Saikasei: Slum Agari no Saikyou Mahoushi, Kizoku darake no Gakuen de Musou suru

Out (Mizuta Makoto)

Overlord