Well, now I know where the sprites for that fake YU snap came from.
Anyways,
this blog has a lot of YU and Riviera stuff (much of it appears to be from a doujin the owner of the blog is apparently working on), but
be warned there is hentai on this site. None is on the first page, however, and none of Riviera/YU.
What goes around...
Comes around...