Onii-chan wa Oshimai! Koushiki Anthology Comic Anime Details and Episodes An anthology comic of Onii-chan wa Oshimai! by various mangaka. Series info · Watch free · Trending anime · Airing schedule FormatMangaStatusFinishedScore71/100SourceOriginalCountryJapan Comedy · Slice of Life Anthology · Female Protagonist · Episodic · Gender Bending · Yuri · Age Regression Onii-chan wa Oshimai! (Parent Story) Onii-chan wa Oshimai! Tokubetsu-hen · Onii-chan wa Oshimai! Tanjoubi · Niwasaki Diary Mahiro Oyama · Mihari Oyama · Kaede Hozuki (Supporting) · Miyo Murosaki (Supporting) · Momiji Hozuki (Supporting)