Similar to お酒は夫婦になってから

Ooya-san wa Shishunki!

Kaina of the Great Snow Sea

All Out!!

Sweet Reincarnation

No Money (novel)

Okitsura

My Wife Is the Student Council President

Oku-sama wa Joshi Kōsei

Oku-sama wa Mahō Shōjo: Bewitched Agnes

Ogenki Clinic

Fish in the Trap

Osamake

You Can't Be in a Rom-Com with Your Childhood Friends!

Ozanari Dungeon

Please Tell Me! Galko-chan

Ojamajo Doremi

Ojamanga Yamada-kun

Ojarumaru

A Girl & Her Guard Dog

Oshin

Osu! Karate Club