They ask the same thing

“So what have I missed?” you asked, trying to figure out what exactly the two of them had been up to.

Neither of them had gotten re-dressed as their clothes were still downstairs and what little clothes they may have kept on had been discarded as well. Given that they were still laying side by side with their arms touching one another, you didn’t think they minded the casual nudity anymore, at least between the two of them up until now and also in your presence as well.

“Not much, less than what you have been up to from what we heard” Lucy said, moving to the side to open a space between her and Sarah and inviting you to join them on the bed.

“Mom and I just had some things to sort out and she was happy to blow off some steam once we had got everything handled” you replied, settling down between the two of them.

You all lay with your backs to the headboard of Lucy’s bed and you did feel oddly overdressed given that your boxers were the only clothes being worn currently.

“Oh come on, you can’t just be vague like that after what we heard down there. It was like Mom didn’t even care about us listening. And you were definitely spanking her right?” Lucy asked, sounding confident in her guess.

You were hesitant to reveal exactly what had happened without Mom’s permission but given that you had been in the living room where either of them could have seen you, you felt it was okay to tell them some of the details.

“Yes I was spanking her and before you ask, Mom was the one to suggest it. It was the rest of her punishment after she was naked earlier” you replied, not telling the complete truth.

You didn’t want to tell them about the no-fucking conversation you had had with Mom just in case they somehow turned that on her. You knew Sarah was ready to take that step and you didn’t want any pressure being applied to her like that, knowing it would likely backfire.

Lucy still looked surprised that Mom was into something like that but Sarah seemed to have something else on her mind instead.

“So… How did your conversation go? About us?” Sarah asked, looking over to Lucy and then back to you.

You had assumed that after Lucy had dragged her out of the living room, this had been something they had discussed, but neither of them were giving you any clues as to what exactly had been said.

“She’s given us her permission. All of us her permission” you confirmed, seeing the instant excitement bloom on Sarah’s face.

“Really!?” Sarah shot back, getting up from where she was laying and moving to straddle you.

“Yep. But… I still don’t think we should do it tonight. That’s coming from me, not her” you replied, seeing some of the excitement dim.

“Why?” she plainly asked back, letting you know that had been her exact plan for this evening if you hadn't said differently.

“Well, Mom wants to know that she made the right decision and if we can show at least some restraint at first, then it's going to be easier for her to accept and trust us with more stuff like this in the future.

“What else are you planning after this?” Lucy questioned, curious about what you had in store for the future.

“Anything. Everything. I mean can you imagine just how far we can take this? Like you get home and see me fucking Grace anywhere in the house and Emma or Mom are watching. Or they have joined in. I don’t even have to be involved if you want to play together. No more hiding, no more secrets. And getting Mom to trust us is gonna be a big step in making that a reality” you explained, trying to think of the bigger picture even while you had your sisters naked in the bed with you.

You did have other reasons but the main one was KDK-related and you couldn’t quite reveal that to them. You had been hesitant about Sarah reaching level 4 before you had sex but now it felt like you should reach it instead. You could clearly tell she was ready and you didn’t have to worry about the level-up effects affecting her thoughts.

She was already well beyond the point where you expected the KDK to change her mind about having sex for the first time and even if you thought you were biased on that, Mom had already given you a warning as well. The last time you checked, Sarah had been around two thousand seconds away from her next level and that was likely now less after she had been sitting on your lap and giving you a handjob when she was at your side.

“Plus, if there’s any fantasies that either of you two would like to live out, something that you didn’t think you would ever get to experience with the current dynamic at home, I’ll honestly try my best to make it a reality” you added, knowing that you would likely enjoy whatever they had in mind as well.

“I’ll give it some thought” Lucy replied, not feeling like now was the right moment to reveal some of her innermost fantasies but still keeping what you said in mind.

Sarah however did look like she was seriously considering your words in the moment and with her sat up while you and Lucy were still in a more relaxed position on the bed, she could look at both of you to gauge your reactions.

“...I do have an idea” Sarah said, her confidence with you from earlier faltering slightly as she was preparing herself.

“I’d be happy to hear it” you replied, gently running your hand up and down her thigh and giving her your friendliest smile as if encouraging her to continue.

“Oh I think you’ll enjoy it but I’m not sure if she will” Sarah commented, turning her attention towards her sister.

Lucy hadn’t expected the conversation to turn towards her and **** herself to sit up a bit more against the headboard to properly respond to Sarah. Neither of them seemed to think their nudity was stopping the more serious discussion of their fantasies and while you occasionally got reminded of that fact like you were thinking right now, you did also realise that it was starting to become more normalised for yourself as well, finding it much more natural to hang out like this while they were completely naked.

“This is something that involves me as well then?” Lucy guessed, not having expected Sarah to have mentioned her when it came to her fantasies.

Sarah nodded and while she still looked unsure if she should actually reveal this, it seemed that you being there was enough support to let her speak the truth, bringing you back towards the conversation and out of your previous thoughts.

“I want the both of you to use me,” Sarah revealed, her hands clenched as she waited for either of you two to react.

Author's note: Completely forgot it was Thursday so apologies for the late chapter :D