Artist.

Japanese name: てらじん (Terajin, the artist uses this spelling: "Terrajin")

See also

• Twitter account: http://twitter.com/Terrajin05
• Pixiv account: http://www.pixiv.net/member.php?id=970557
• Tinami account (for non-Touhou artworks): http://www.tinami.com/creator/profile/35953