Artist.
Japanese name: テクノはる (Techno Haru or Tekuno Haru)
The other names: テクノ (Tekuno) or てくの８あと4
Circle & site name: 隷属犬
(The artist had a crowdworks account, too.)
https://www.pixiv.net/users/65924
https://www.pixiv.net/stacc/tekutekuno
https://twitter.com/tekunonono
https://twitter.com/intent/user?user_id=74322542
https://sketch.pixiv.net/@tekutekuno
http://privatter.net/u/tekunonono
http://p.twipple.jp/user/tekunonono
http://twitpic.com/photos/tekunonono