My idea involves a Pair of people (MxF) who attend the same college. The dooms are all full save for a Co-ed dorm and while the two don't know it they end up both signing the waiver to end up sharing a room. (A little shaky I know but meh.) At that point its a slice of life RP a little bit of twists and turns here and there. Of course all mature 18+ themes are entirely optional I would never force anyone into something like that.

Let me know if you are interested through PM.