This really seems like blatant plagiarism of one of Wokoda's illustrations (see parent), especially since it's tagged "original" at the source.
Maybe Wokada created a new Pixiv account? The profile pic is another Wokada picture.
http://twitpic.com/e2rupa is on Wokada's twitpic, same picture, different color background. Wokada seems to have changed this character's hair color from the original picture.