Indeed one of the nastiest doujins about Chun-Li you'll find (Yeah, She's as old as time self, and she have thousands of doujins, or even more, but who's counting?), any description will be short compared to the content, you'll have to see it for yourself.
Final Call: It's totally awesoem, really worth to download, although maybe some will find a little tiny problem: It's Futanari. Anyway, I recommend it.