No, that ad on the left is not a paid one.
It was an ad I saw on a non-hentai anime site.
It was in flash and because I was too lazy to dig through the code to snag the .swf I took a screenshot and made a .jpg of it.
AFAIK, 'Shuffle' is not hentai (but I'm sure there's hentai of it).
But it was that line in the middle that really got me:
''Includes Sia's Panties!''.
NO, NO, even I'M not that freaky!
If you're into non-hentai anime, cool, whatever, I watch the stuff from time to time myself.
But I'm just not getting this, it's a non-hentai anime character, what's with the panties?
OK, OK, yes, I get it. And because I do, I find it even moar twisted.

I checked Wikipedia, it seems it's an anime series that was derived from an H-game.
[sarcasm]Oh like that's something new[/sarcasm].
Well that explains the panties I guess.