Artist.
URL's:
http://www.tinami.com/creator/profile/50893
http://tegaki.pipa.jp/730737/
https://twitter.com/ryuki_maguroex
http://www.nicovideo.jp/user/1369677
http://maguro000.tumblr.com
https://www.pixiv.net/member.php?id=2485957
http://seiga.nicovideo.jp/user/illust/1369677
https://twitter.com/ryuki_drastic