Ushiki Yoshitaka http://www.pixiv.net/member.php?id=4544

Also known as One Night Stand

https://twitter.com/yosihiki

The Coming of Spring Touhou Project Doujin released Mar 15 '09 NSFW Romance Yuri Yuyuko x Youmu
Tuning Touhou Project Doujin released Apr 30 '12
Chasing and Catching Love Live! Doujin released Dec 22 '14 Maki x Rin Yuri