kuuichi09
Artist.
Nickname: kuuichi09 (くーいちまるきゅー, Kuuichi Marukyuu)
Circle & old site name: 揺れる猫機械 (Yureru Neko-kikai)
Site name: ゆれぬこましーん (Nurenuko Machine)
See also
* Tumblr gallery: http://kuuichi09.tumblr.com/
* Pixiv account: http://www.pixiv.net/member.php?id=3279051
* Nijie account: http://nijie.info/members.php?id=2697
* Tinami account: http://www.tinami.com/creator/profile/14397
* Niconico account: http://www.nicovideo.jp/user/9328879
* Niconico Seiga (empty): http://seiga.nicovideo.jp/user/illust/9328879?target=illust_all
* Twitter account: http://twitter.com/kuuichi09
* Twitpic account: http://twitpic.com/photos/kuuichi09
* Ask.fm account: http://ask.fm/kuuichi09
* Circle.ms: http://c10270582.circle.ms/oc/CircleProfile.aspx
* Blog (deleted): http://yurerunekokikai.blog.fc2.com/
* Old pixiv account (deleted): http://www.pixiv.net/member.php?id=1487804
* Niconico community (deleted): http://com.nicovideo.jp/community/co1622133
(He has some private accounts, too. They're not related to danbooru though.)