Artist.
Artist name: do-poi
The other name: 大将 (Taishou)
Circle name: ぐうたら本舗+ (the other members: Shiro+Taku, 441 and Yumesaki Chizuru)
https://www.pixiv.net/users/875273
https://www.pixiv.net/stacc/do-poi
https://twitter.com/dopoi1989
https://twitter.com/intent/user?user_id=369770599
https://sketch.pixiv.net/@do-poi
https://ameblo.jp/yoiyo--i-a-hore-do-poi
http://twitpic.com/photos/dopoi1989