The basic premise is that your character starts off as an obese ugly woman, this was inspired by the cartoon Broomstick Bunny. My character is a scientist friend of yours that is working on a revolutionary diet drink. The effects are immediate, your character goes from blob to bombshell in moments but the effect is only temporary.

The RP would focus on your characters growing addiction to the diet drink, the euphoria of finally feeling desired, and the lengths they will go to get more. Detail is important to me in this, I think a lot of the fun and eroticism will come from comparing and contrasting how much different things are on the diet drink.

This means I am looking for someone who can match me in detail. For example, I would not enjoy a post like this: "I moan in lewd pleasure as his cock pounds down into me." I would want posts more like this: "I couldn't believe how freeing it was to be bent into a position like a pencil. My old body would never, could never have been this flexible, but this new form made me feel light as a feather, delicate and pliable. The moans come from my throat as I experience throes of passion I never thought I would feel in my life as the obvious desire in your eye makes me feel sexy for the first time in my life."

So if you want a long term RP partner who can write with a fair bit of detail and you can match, then I am a great partner to have. Even if I recognize that this is a bit of a niche idea that many wouldn't want to do. I think I've covered the kinks I am looking for in this prompt, my limits are things like: Underaged characters, toilet play, snuff in any form, and excessive violence.