Similar to 武蔵くんと村山さんは付き合ってみた。

My Wife Is the Student Council President

Oku-sama wa Joshi Kōsei

Please Tell Me! Galko-chan

Ocha Nigosu

Otogi Matsuri: Dark Offering

Otoko Girai na Bijin Shimai o Namae mo Tsugezu ni Tasuketara Ittai Dō Naru?

Otome no Teikoku

Otomen

Dear Brother

OniAi

I Don't Like You at All, Big Brother!!

Oresama Teacher

Oreshura

Oresuki

Seraph of the End

Onna no Sono no Hoshi