The artist's name is Niki. The same goes for these:
Image #214685
Image #214686
Image #214688

and all of the other pictures with this URL in the Misc. Metadata field: http://www.pixiv.net/member.php?id=33614

Thanks. I forgot to go back and actually tag the artists. XD *continues to put it off in place of fun*
But for next time, post image links, not image ID #s. It's a pain to copy/paste them in to tag.