Artist. Often draws monsters and monster girls.
Artist name: ＵＮ＿ＤＯ (UN_DO)
Circle & site name: 投影
https://www.pixiv.net/users/23128
https://www.pixiv.net/users/32137099
https://www.pixiv.net/stacc/undine
https://www.pixiv.net/stacc/user_aems4277
https://twitter.com/UN_DO12
https://twitter.com/intent/user?user_id=1623087529468760065
https://skeb.jp/@UN_DO12
https://misskey.io/@UN_DO
https://misskey.io/users/9rtzyf8qs6740gje
http://15tanloveyou.sakura.ne.jp/index.htm
http://www.geocities.jp/pbmcf974/