shizen_sora
Artist, illustrator.
Japanese name: 自然 空 (Shizen Sora)
See also
* Pixiv account: http://www.pixiv.net/member.php?id=126818
* Tinami account: http://www.tinami.com/creator/profile/51415
* Twitter account: http://twitter.com/SizenSora
* Twitpic account: http://twitpic.com/photos/SizenSora