kameyan
Artist.
Japanese name: 又又 (Matamata)
Old name: カメヤン (Kameyan)
See also
* Pixiv account: http://www.pixiv.net/member.php?id=2684279
* Niconico account: http://www.nicovideo.jp/user/19157076
* Niconico Seiga: http://seiga.nicovideo.jp/user/illust/19157076?target=illust_all
* Twitter account: http://twitter.com/matamata890