I didn't see xeruel's other question until reading Rein's quote just now. Sorry! X_X
No, unfortunately.
Oppai Raifu was a major disappointment. It was very,
very vanilla. There were few sex scenes. The few scenes were so drawn out. They were very very boring. And in addition, the animation was not much better. Not
anything near as smoking hot as the cover art, but still pretty good.
Would I encourage you to watch it? Yeah, sure, everyone's different when it comes to hentai so unless you think it's going to be absolutely disgusting to you I don't think you should ever take other people's word 100%. What's boring to one person may not be to the next, etc.
Would I encourage you to get excited for it?
Hell no. I
wanted to "do my business" with this one and I was sorely disappointed. A complete waste of 10-15 minutes. (Watched some, dragged the timer bar with the mouse some.)