Shoujo

Ookami Ryoushu no Ojousama

Oomuro-Ke

Ootagawa Junjou Lovers

Open The Female Matching Strategy System

Operation True Love

Orange

Ordinary Girl

Osake no Tame ni Otome Game Setting wo Buchikowashita Kekka, Akuyaku Reijou ga Cheat Reijou ni Narimashita

Osananajimi ga kyouteki desu.

Osananajimi Kara no Amasugiru Kyuukon ga Tomarimasen