ryouku
Artist.
Japanese name: リョウク (Ryouku)
See also
* Pixiv account: http://www.pixiv.net/member.php?id=946562
* Niconico account: http://www.nicovideo.jp/user/8923483
* Niconico Seiga: http://seiga.nicovideo.jp/user/illust/8923483?target=illust_all