Artist.
Japanese name: きゅうとう (Kyuutou)
The other names: 九頭龍 (Kyuutouryuu) or きゅうと (Kyuuto)
https://www.pixiv.net/users/4720261
https://www.pixiv.net/stacc/kyuutouryuu
https://twitter.com/negativezone649
https://twitter.com/intent/user?user_id=766323000
https://seiga.nicovideo.jp/manga/list?user_id=21916220
https://seiga.nicovideo.jp/user/illust/21916220
http://com.nicovideo.jp/community/co1947635
https://www.nicovideo.jp/user/21916220
https://sketch.pixiv.net/@kyuutouryuu
http://twitpic.com/photos/negativezone649