watari_(inga_ouhou)
Artist.
Japanese name: 渡 (Watari)
Old name: ししゃも (Shishamo)
See also
* Pixiv account: http://www.pixiv.net/member.php?id=1075860
* Privatter account: http://privatter.net/u/watari_krs
* Twitter account: http://twitter.com/watari_krs