yoroi_kabuto
Artist, whose name seems to be a pun for 鎧兜 (armor and helm).
Japanese name: 丁井 加太 (Yoroi Kabuto) (reading is a best guess)
See also
- Pixiv account: http://www.nicovideo.jp/user/2684018
- Niconico account: http://www.nicovideo.jp/user/2684018
- Niconico Seiga: http://seiga.nicovideo.jp/user/illust/2684018?target=illust_all
- Twitter account: http://twitter.com/armor_helm