kedama_sensha
Artist.
Japanese name: 毛玉戦車 (Kedama Sensha)
See also
* Pixiv account: http://www.pixiv.net/member.php?id=3198502
* NicoNico Douga account: http://www.nicovideo.jp/user/6731334
* NicoNico Seiga images: http://seiga.nicovideo.jp/user/illust/6731334?target=illust_all