Another few ideas:
The Train Ride
This idea has been thrown around by other people before on here, and I feel in the mood to give it a try myself.
Japanese trains are notoriously crowded, we've seen the images, people being pushed in to fit. So its not surprising to think that hands might... wander. Or more.
What starts out as a little groping evolves into full on sex, right in the middle of the train car. Maybe its a special car, and the people are in on it, or maybe they're just that oblivious. And when the ride is over, maybe the girl decides this was an erotic adventure worth having again.
-This roleplay is kind of a one shot, and as of right now might possibly be taken
The Blood Donor
In the mood for a bit of a vampire roleplay. My idea is that a vampire works at a blood bank -hey look free food-, when one day a girl comes in that attracts his attention. Sure, she's attractive... but the main thing that has his interest is her blood. For some reason or another, it just tastes better.
Eventually, he decides he wants this girl for himself and, after one of her donation trips, he kidnaps her and takes her to his home to keep prisoner and provide him with fresh blood whenever he desires.
-I'm not interested in torture or tons of pain, certainly no death. The idea is that she becomes a treasured possession to him, something he feels he needs. I'm very open to suggestions, ideas etc on this one.