You may have heard of
Pixiv-- it's sort of Japan's eqivalent of DeviantArt. Organization is based on a tagging system, so it can be quite easy to find fanart of your favorite character... if you can speak Japanese. I can't, but through some digging around, overuse of
GoogleTranslate, and completely cheating by
downloading a Firefox addon to translate the site's interface, I've come up with a list of tags that may be helpful if you find yourself with a hankering for more fanart than the Western side of the fandom can provide.
Note: Any "R" rated fanart is under the tag "R-18", and therefore filtered out of results that you can see if you are not signed in. If you really want an account,
this is the guide I used. I used to know a dummy account that someone one of the chans created, but I can't remember the password... if anyone's interested though, I can try to make another one.
And oh shiz you can see some of my stuff on there now *embarrassed*