Artist.
Japanese name: いろいろやる人 (Iroiro Yaru Hito)
Old name: にがつ (Nigatsu)
Circle name: ポンポンブラック (Ponpon Black)
https://www.pixiv.net/users/1341860
https://www.pixiv.net/stacc/ring_09
https://twitter.com/iro2do
https://twitter.com/intent/user?user_id=569665069
https://pawoo.net/@ring_09
https://pawoo.net/web/accounts/569202
https://sketch.pixiv.net/@ring_09
http://portal.circle.ms/Circle/Index/10263041
https://www.melonbooks.co.jp/detail/detail.php?product_id=357068
