Similar to オレん家のフロ事情

Ooya-san wa Shishunki!

Kaina of the Great Snow Sea

All Out!!

All You Need Is Kill

No Money (novel)

Occultic;Nine

Oku-sama wa Joshi Kōsei

Oku-sama wa Mahō Shōjo: Bewitched Agnes

Ogenki Clinic

Okoshiyasu, Chitose-chan

Fish in the Trap

Love Is Like a Cocktail

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

Ozanari Dungeon

Ojisan and Marshmallow

Ojamanga Yamada-kun

A Girl & Her Guard Dog

Oshin