Just to say, Indigo Prophecy did have an interactive love scene (let you decide when to thrust...) that was cut from the NA version I played. Despite that being cut, there were still two love scenes that showed a bum or two. Nothing major, but with how forced those two scenes were into the game, the developers obviously WANTED them to be there, so I don't doubt some more action in this game. I mean, they even threw in an unlockable scene at the end (also cut in the NA version) that ended with one of the characters stripping down and deciding to go full frontal. It's pretty weird.
Not anything that you wouldn't see in a typical R-rated movie though. I guess.

Don't remember much harsh language though, but the tone of this game could be different and have more in it than IP.

Anyway. I really liked Indigo Prophecy, so of course I'm really liking Heavy Rain. I know a lot of people think a game with just quick time events would be lame, but there's a lot more to it than that.