nounai_ohanabatake
Artist.
Japanese name: 脳内お花畑 (Nounai Ohanabatake)
See also
* Pixiv account: http://www.pixiv.net/member.php?id=8249351
* Niconico account: http://www.nicovideo.jp/user/28193513
* Niconico Seiga: http://seiga.nicovideo.jp/user/illust/28193513?target=illust_all