Artist.
Japanese name: うーな (Uuna)
The other names: まうまう (Maumau) or ウーナ (Uuna)
Circle name: Counterspell (カウンタースペル)
Site name: Counter target spell.
https://www.pixiv.net/users/34403
https://www.pixiv.net/stacc/counterspell
https://twitter.com/Oo_na
https://twitter.com/intent/user?user_id=16733899
https://sketch.pixiv.net/@counterspell
http://www.tinami.com/profile/16811
https://www.tinami.com/creator/profile/2981
http://privatter.net/u/Oo_na
http://twitpic.com/photos/Oo_na
http://yfrog.com/user/Oo_na/photos