i think this one (if it's ofical) was made early on, after all, Ed was orginaly going to be a boy , although if look closely she has a camel toe, what do you think?

It's from a hentai doujin:

http://doujinshi.mugimugi.org/book/1280/Cu-Little-Okirunya/%E3%81%8F%E3%82%8A%E3%81%A8%E3%82%8B%E3%80%80%E3%81%8A%E3%81%8D%E3%82%8B%E3%81%AB%E3%82%83

Man, I KNOW I have this on my harddrive, somewhere.
It's just not sorted/named right.