Youkanchi http://www.pixiv.net/member.php?id=446127

Also known as Yuukanchi and Cosmic

Johari Garden Touhou Project Doujin released Feb 26 '13 Drama Incest Koishi x Satori Philosophical Violence Yuri
Zuikaku Gets Turned On by Shoukaku in Diapers Kantai Collection Doujin released May 18 '16 Diaper Disability Drama Moderate amounts of sex NSFW Shoukaku x Zuikaku Yuri
Hello & Hello Kantai Collection Doujin released Aug 24 '16 Drama Mutsu x Nagato Yuri
Hello & Hello (second part) Kantai Collection Doujin released Dec 30 '16 Drama Mutsu x Nagato Sequel Yuri
Flower & Knife by Minakata Sunao and Youkanchi Touhou Project Doujin released Oct 21 '18 Meiling x Sakuya Yuri
Hello & Hello (Third Part) Kantai Collection Doujin released Aug 1 '20 Mutsu x Nagato Sequel Yuri