This is a little character I made in response to this silhouette: http://en.touhouwiki.net/images/d/d7/Th15front.jpg

ZUN, the creator of Touhou, released the game's cover art, and since game 8, he's been putting the final boss's silhouettes on the cover. Obviously, nobody knows who it is, but judging by the plot, the moon rabbits invading, I've guessed she is also a rabbit, and her power is so great she has multiple tails.