The plot emporium

MC has come into possession of a device enabling time travel. Along the way in his sight seeing he met you and just new he had to have you. There are numerous possibilities for this. Things like his influence on her early in life changing her personality later, like being a kind stranger that hands her a comic may inspire her interest and in the future she may develop into a fan. Molding her to his interests and seeing the outcome in the future. Meeting her future selves and learning what he can from them to use to manipulate her when she's younger. Or a more immediate and darker route. Time travel makes him impossible to catch for his misdeeds, even raping her whenever he wants. The plot/gimmick I would say is as important as the smut. If you're willing to play a character across many ages, slightly changing with these visits let me know.

Kinks to mention: noncon/dubcon, lolicon

For this our characters are on a research expedition to an area of the Pokémon world never before seen. Uncharted and currently uninhabited by humans we set out to explore. The only caveat being the nature of the expedition. The professor knows enough. The Pokémon here are not only aggressive but horny. You as his assistant have been unknowingly stranded here for the time being to get fucked by the region's inhabitants as part of the research. While you may hate it at first, slowly but surely your mind is erroding until you're a pokecock slut.

Kinks to mention: Size difference, noncon, possible ageplay (trainers in the series come in such a wide range and your character would be your own)

Fifty years ago the barrier between the world of humans and magic fell after separating the two for centuries. While many have adjusted and it's just as common to see an elf as your barista at Starbucks as it would be to see another human, many of the magical races are still getting used to living without magic even as the world tries to shift to better accommodate them. In this setting our characters meet, whether that means they're on a blind date, dating app or sheer luck something has drawn the two together. One just a human man, the other a fairy. This rp would be focusing on romance and the lewd as we build the relationship between the man and his pint sized lover. 

Kinks: extreme size difference, stomach bulging, lots of cum

While based on the game of that name knowledge of the game isn't required. I'd be playing a main character as well as partially gming so that anyone who has an interest can join. The set up is thus: Our characters come from a medieval fantasy world with a prophecy foretelling doom approaching from an ever open rift. The city built around this portal is tasked with keeping the impending evil at bay. Citizens sacrificed by passage through the portal. No one who enters can ever return making this an immense task. The world beyond the portal isn't a hellish wasteland filled with nothing but demons. There are some sure but it's similar enough otherwise to where we came from. This plane is magically infused and fueled by sex. Monsters more likely to try and kidnap you to fuck you than to eat you. Strange plants that serve as alchemical ingredients for potions of sexual transformations. 

As we play I would give you options  out of character to help choose how your transformations go. Some effects are subtle, height, hair color, increased libido etc. Others more wild, animal ears, tails, growing younger, succubi crests and more.

Kinks: size difference, large cocks, lots of cum, noncon/dubcon, age play (possible with the age transformation or your base character) possible incest, body modification

The Phantom Thieves have done it. The day has been saved. With Shido arrested and mementos closed off life can return to normal. Or so it seems. Months after jokers departure rumors circulate of someone changing girls into sluts the same way the phantom thieves changed the hearts of those who were evil. The Phantom Thieves are forced to act when the boys are seemingly effected, dismissive of the girls overnight wanting nothing to do with this leaving them with only a calling card from the Phantom thief of lust. They're being targeted and they're on their own. To stop him before it's too late.

This is a harem hypnosis RP focused on P5 where you would play various girls from the game. Without the rest of their gang this opens up needing the confidants even more to help bolster their team. In addition we could include light combat rp and monster fucking. When the girls enter the new palaces the shadows inside want more than just to protect the castles but the girls themselves. With damage raising their libido and defeat meaning the possibility of being raped by the shadows or the villain themselves waiting in the wings. These defeats leading to changes to the girls in the real world as they shed their inhibitions and will and give in to lust for the villain.

We could also include the cast of the previous games. For example where there is a mystery Naoto is hardly far behind and back up in the form of the other investigation team girls might also be a welcome reunion for them, assuming they don't become brainwashed sluts as well.