Artist. Formerly tagged as y_m.
Japanese name: お松 (Omatsu)
https://www.pixiv.net/users/191704
https://www.pixiv.net/stacc/omatttsu
https://twitter.com/omatttsu
https://twitter.com/intent/user?user_id=58282872
https://pawoo.net/@omatttsu
https://pawoo.net/web/accounts/169151
https://sketch.pixiv.net/@omatttsu
https://omattttsu.tumblr.com
http://omatttsu.jimdo.com
https://www.pixiv.net/stacc/y_m
http://p.twipple.jp/user/omatttsu
http://twitpic.com/photos/omatttsu