Collaborative sex stories let us write the plot together

(Her Secret Fantasy, continued by Gen Grey...)

You decide to call your step-sister, but resolve not to tell Rachel about it.

“Hey Amy… I know, I know, it’s been a while since we’ve talked… Listen, I’ve got a favor to ask, and it’s a bit embarrassing. Rachel has been wanting to try something with me in the bedroom and it involves you… Look I know it’s hard to look back on the sex we had, but just remember how much fun it was, you sneaking into my room late at night… I’m glad you see it my way, but there’s a little twist on things, I made her promise to be my sex slave for a week. I want you to surprise her and be her Domme… Umm tonight would be great if you could work it out… Thanks Amy, hope to see you soon!”

Hopefully your plan will work. Rachel thinks you are going to only dominate her yourself. Little does she know that you want to merge both of your fantasies into one and join forces with your sexy sister Amy!