Artist.
Japanese name: マツコ (Matsuko)
The other name: 待つ (Matsu)
Circle & site name: nia
https://www.pixiv.net/users/46501
https://www.pixiv.net/stacc/matu
https://twitter.com/matuppoi
https://twitter.com/matutteru
https://twitter.com/shushoku10
https://twitter.com/intent/user?user_id=3003725922
https://twitter.com/intent/user?user_id=3014350333
https://twitter.com/intent/user?user_id=1359082020983382016
https://sketch.pixiv.net/@matu
http://piapro.jp/matu
http://c10013441.circle.ms/oc/CircleProfile.aspx
http://c10044229.circle.ms/oc/CircleProfile.aspx
http://twitpic.com/photos/matuppoi
http://twitpic.com/photos/matutteru
