Ryousai Material! http://www.pixiv.net/member.php?id=7283

Also known as Niina Ryou and Niita Ryou

Tetradion Saki Doujin released Jun 7 '11 Drama Hisa x Mihoko Romance Yumi x Momoko Yuri
MisaChiyo! -the path they chose- The Rolling Girls Doujin released May 26 '15 Mamechiyo x Misa Yuri
Hana and Eru Original Doujin released Aug 31 '15 Comedy Drama Maid
Mermaid Drive Twitter Collection Valkyrie Drive Doujin released Mar 8 '16 Comedy Ecchi Full colour Kasumi x Hibiki Mamori x Mirei x Momoka Polyamory Yuri
The Room You Can't Escape From Without ****ing Ange Princess Principal Doujin released Jan 4 '18 Amnesia Ange x Princess Yuri
SSSS. Gridman Official Anthology Comic ch10: GACHAGACHA SSSS.Gridman Doujin released Feb 14 '19 Akane x Rikka Comedy Mecha Official Sci-fi Yuri
SSSS. Gridman Anthology - Side Shinjou Akane ch01: Shocked SSSS.Gridman Doujin released May 13 '19 Akane x Rikka Mecha Official Sci-fi