Artist.
Japanese name: 遊木 ときと (Yuuki Tokito) or 遊木 (Yuuki)
Old name: 浦木 けい (Uraki Kei) (reading is a best guess)
Circle & site name: ぬこみ荘 (ヌコミソウ, Nukomisou)
Old site names: 銀の螺旋階段, 兎箱 or "Small Gift"
https://www.pixiv.net/users/67752
https://www.pixiv.net/stacc/nukomiso
https://twitter.com/nukomiso
https://twitter.com/tokito_yuki
https://twitter.com/intent/user?user_id=113102295
https://twitter.com/intent/user?user_id=2338604442
https://sketch.pixiv.net/@nukomiso
http://livedoor.blogimg.jp/clearclover/imgs/2/6/
http://blog.livedoor.jp/clearclover/
http://twitpic.com/photos/nukomiso
http://yfrog.com/user/nukomiso/photos