Artist, Be-Music Source creator.
Japanese name: うまるつふり (Umarutsufuri; the artist uses this spelling: "Wumalutsufuri")
Site name: 政 (Matsurigoto)
https://www.pixiv.net/users/99773
https://www.pixiv.net/stacc/sibugakimaturi
https://www.deviantart.com/wumalutsufuri
https://fantia.jp/fanclubs/230732
https://fantia.jp/wumalutsufuri
https://seiga.nicovideo.jp/user/illust/899789
https://www.nicovideo.jp/user/899789
https://pawoo.net/@wumalutsufuri
https://pawoo.net/web/accounts/24514
https://pawoo.net/web/accounts/294055
https://wumalutsufuri.fanbox.cc
https://www.pixiv.net/fanbox/creator/99773
https://sketch.pixiv.net/@sibugakimaturi
https://www.tinami.com/creator/profile/15767
https://ask.fm/wumalutsufuri
http://wumalutsufuri.web.fc2.com
http://privatter.net/u/wumalutsufuri
http://www.stickam.jp/profile/wumalutsufuri
http://soundcloud.com/wumalutsufuri
http://twitpic.com/photos/wumalutsufuri
