izumi_ryou
Artist, biker. Likes Yamaha R1-Z.
Japanese name: 和泉 諒 (Izumi Ryou) (Reading is a best guess.)
Circle name: ニセンダム (Nisendamu) (the other members: Sudo and Suzume)
See also
* Pixiv account: http://www.pixiv.net/member.php?id=695757
* Twitter account: http://twitter.com/izumi_r1z
* Twitpic account: http://twitpic.com/photos/izumi_r1z