Artist. Formerly tagged as sonoshiro, 10uhou or tsunomaru.

Japanese name: 新園 城子 or 新園 しろこ (Shinsono Shiroko) (reading is a best guess)
Old names: 園城 (Sonoshiro) or ツノマル (Tsunomaru)

See also

• Pixiv account: http://www.pixiv.net/member.php?id=5707560
• Twitter account: http://twitter.com/sonoshiro
• Twitpic account: http://twitpic.com/photos/sonoshiro
• Old pixiv account (deleted): http://www.pixiv.net/member.php?id=1089876