Let's do this another way

You pause for a few seconds to think about the discussion that just happened. "Wait, no. It won't do." you end up concluding.

"Oh?" you can see disappointment in Carrie's way of pouting. Not sure wether it's just because she thinks you chickened out and would be equally unimpressed whatever the fantasy you came up with or she was starting to like the idea of having sex with her own sister, but you have to quikcly reassure her.

"Don't worry, I'm not talking about the threesome, I'm talking about our plan. It's just not the most exciting way to get to it, in my opinion."

"Oh!" she exclaims in a way more enthusiastic tone. "Tell me everything!"

You smile. "First, I think it would be hotter if you were the one to seduce her. After all, you're the one who's related to her, plus there's the whole girl on girl thing."

"Hmm... I'm not sure it would be that easy. I'm not sure she's into girl, not even mentioning the whole icestual thing."

You grin. "Well, there's no fun if there's no challenge, right?"

She giggles and gives you a bright smile "You're not wrong, but don't think I didn't notice all the difficulty is for me and you will only pick the fruit of my labor with your dick. But challenge accepted. What's the next part?"

" Cassidy should not simply want to have sex with us once or twice, I want her to be obsessed with this idea. She must want to become our little willing slut. Bonus point if she falls in love with you or if she's the one who makes a move on you. Also, she must not know what's the deal, you can tell her that I'm okay with it if she asks, but I want her to ignore that you're intentionally trying to seduce her on my order."

"Gosh! You won't make it easy for me, right? But I like it. It will put me out of my comfort zone, but it will be so rewarding when my baby sister will give me her cunt to eat."

You stay stunned for a few seconds, while she burst out in laughters. Her lack of modesty and morality never cease to amaze you. "You think you can pull it off?"

"I have no fucking idea, but I'm sure as hell I will have fun trying." she answers with a sultry smile. "Now, what about you give me one or two more orgasms so I have more energy for my quest?"