usukuchi_(hagi)
Artist.
Japanese name: うすくち or ウスクチ (Usukuchi)
See also
* Pixiv account: http://www.pixiv.net/member.php?id=2521528
* Drawr account: http://drawr.net/hagi0207
* Privatter account: http://privatter.net/u/usukuchi111
* Twitter account: http://twitter.com/usukuchi111