Petenshi http://www.pixiv.net/member.php?id=4894

Also known as Dr. VERMILION

Pixiv is NSFW. Contains het, tentacles.

Touhou Bloomers Touhou Project Doujin released Mar 2 '08 Chibi Comedy Sports
Akizakura Touhou Project Doujin released Oct 9 '09 Yuyuko x Youmu
(Unknown) Touhou Project Doujin released Dec 7 '09 Comedy Yuyuko x Youmu
Wazuka na Omocha no Gensoukyou Touhou Project Doujin released Apr 28 '10 Aya x Yuyuko Big breasts Comedy Lots of sex Masturbation NSFW Toys Yuri
Youmu's Secret! Touhou Project Doujin released Mar 30 '12 Big breasts Ghost sex Lots of sex Lots of tentacles Masturbation Meiling x Sakuya NSFW Selfcest Supernatural Watersports Yuyuko x Youmu
Pleasure Expert (Heaven Master) Saten-san A Certain Scientific Railgun Doujin released Sep 6 '13 Kuroko x Saten Kuroko x Uiharu Lots of sex NSFW Saten x Uiharu Squirting dildo Threesome Toys Yuri
Happy Birthday Kotonoha Sisters Voiceroid Doujin released May 1 '16 Akane x Aoi (Voiceroid) Full color Incest Yuri