cheating Cheating RPs~ [ Looking for Female Characters ]

I am wanting to do a Cheating Scenario where I play as a Younger Brother who wants to fuck his Older Sister but she is married, nonetheless it develops into them fucking constantly even when her Husband is Home doing whatever the fuck he does. As to how they end up doing it with her Cheating on her Husband is something we can figure out it can be a slow build-up or something quicker, we can even lean into it being quite taboo with the whole Incest stuff there~

I have also been wanting to try and play as a Futa but I am unsure how to fully do those so I would probably want to try that soon enough as well, I do think it should be a Cheating one as well maybe even with me playing as a Male who gets turned into a Futa who knows??  

It is new for me to be searching for this mainly on here so any ideas thoughts and opinions are appreciated, hope to hear from some of you soon enough~