First comes Sarah

With Mom still talking to Grace at the bottom of the stairs, you had no idea how long you would be waiting around for Grace to leave. Obviously you didn’t want to leave Emma stuck in the middle of that conversation but years of this happening in the past had allowed her the ability to slip away from the conversation and sneak off home without either of the two of them noticing.

Now that your two options had been cut to one, you decided to go and see Sarah who you presumed was still in her room. She had already said her goodbyes to Emma when she left your room so you didn’t think she would mind not seeing her off at the door if you took up some of her time.

You walked back down the hallway a bit more carefully in case the creaking of the floorboards alerted anyone downstairs of your presence and went back towards Sarah’s room. The door was shut tight like you expected but you had barely knocked on the door when you heard Sarah scrambling on the other side.

“Oh it's you” she greeted, looking less excited once she saw it was you at the door before letting you inside, jumping back onto her bed to where she had been watching TV.

“Just because you got to kiss my girlfriend, doesn’t mean you can start walking all over me now” you teased, getting the smirk wiped off your face when the second pillow of the night came flying at your head.

You kept the pillow in your hands and decided to join her on the bed, closing the door behind you and lying down next to her, propping yourself up with your new extra pillow. Given that Sarah had already used some of her ammunition against you, you decided you might as well ask her the same question you asked Emma before she had tried to hit you.

“Now that you’ve seen Emma naked, what do you think is her better feature, her ass or her tits?” you ask with a grin, bracing yourself before you got hit again.

Surprisingly all you got back was silence and when you felt brave enough to look at your sister, her face was blushing as she hugged her pillow between her arms.

“She… has nice breasts and I didn’t really get to see her butt” Sarah nervously responded.

You were so surprised that she actually answered that you didn’t have anything to say in return until she looked in your direction.

“What?” she asked back defensively.

“No it's nothing. Just that when I asked that question to Emma about you she hit me with a pillow and called me a pervert. Guess we have more in common than I thought” you teased and as expected, you got hit with the third pillow of the night.

Sarah huffed and turned her head away from you but it didn’t take long before she looked back in your direction and grabbed the pillow back off you to cradle in her arms before you could use it to put behind your back.

You weren’t looking to start anything too exciting with Sarah at the moment and she seemed content after what she had already done with you and Emma previously. For now, you just relaxed alongside her and aimed to keep the conversation going until you were sure Grace was no longer downstairs. You’d have to face her tomorrow but you were hoping that was enough time for her to be less embarrassed and you also got the benefit of the new KDK passive effect that should get everyone to be a bit more receptive to your plans.

“It might be embarrassing but I’m happy to talk about all this more casually if you are” you said.

“Of course you are, you're the one who gets to play with the two of us at the same time” Sarah smirked, obviously thinking you were getting the better end of the deal.

“You’re getting as much out of this as I am so don’t act like I’m the bad guy here. I take it you will be wanting to join in again or were you serious about the trial period. You did seem to be enjoying swapping my cum with Emma earlier or am I mistaken?” you sarcastically responded back, getting a roll of the eyes from Sarah in return.

“Fine fine I get your point. I’m not gonna say no to doing that sort of thing again but you can’t start using it as an excuse to get your way. All three of us get to enjoy doing stuff together so what more could you ask for?” Sarah replied, trying to prove that you were both in a good situation but accidentally bringing up another topic you had been meaning to talk about.

“Well… I mean technically I could ask for more…” you started before trailing off, getting a confused look from your sister in the process.

“More of what?” she asked back.

“Well you said ‘all three of us’ but you must have gathered by now based on the new rules being made around the house that I’m pushing for Mom and Lucy right? I’m not saying you're **** to join in or anything but it’s something I’ve been aiming for and Emma is on board with it as well. Hell, she even wants me to go after a couple more” you explained, focusing on Sarah’s expression while you did so but you could tell she didn’t believe you.

“Oh come on, you really expect me to believe that Lucy would start doing stuff like this with you? Mom is even more of a stretch so there's no point in you even considering it” she replied, apparently not even considering either of them to do anything remotely sexual with you.

“Okay let’s say they weren’t open to it, why would they agree to all the changes about nudity and openly masturbating?” you questioned back.

“Lucy has always been a free spirit so of course she would be fine with it and Mom… well…” Sarah tried answering, finding a good excuse for Lucy but then petering out when she couldn’t immediately think of an answer.

She started to mumble while trying to find an excuse but an idea hit you that made you interrupt her thoughts before you managed to actually convince her.

“If you're so confident, how about we make a bet? Let's say that when we have dinner tomorrow, I bring up a new rule I want to put in place that you think Mom wouldn’t agree to in a million years. If she is looking at me differently like I said, then she will raise her hand and I’ll win. If nothing has changed and she keeps her hand down then you win” you put forward, seeing that Sarah still looked sceptical to accept straight away.

“Well you’ve gotta tell me what the new rule will be first” Sarah replied, making a reasonable demand, all things considered.

The rules put in place at dinner had been largely ignored for the most part and you had only had to use them to justify doing stuff with Mom when Lucy managed to catch you and even that didn’t go down too well. You didn't expect them all to suddenly wake up and start walking around naked and masturbating out in the open just because it was now okay.

For now, you were happy to just put the idea in their heads and more importantly give yourself an excuse to be more forward with some of your plans. After thinking about it for a little while you realised you needed a deterrent to stop anyone still against you using the rules to your advantage.

“How about this, I put forward a rule to make me in charge of punishments going forward instead of Mom. Say if Lucy stays out late then I get to decide the punishment instead of Mom. I think you can imagine what I’ll try and use that rule for and I’ll try to make it clear that that's exactly what I plan to do. You can keep your eyes open during the vote and if I win, you have to vote in favour alongside Mom and if you win… I will vote in favour of your next rule no matter what it is” you answered, getting a wide-eyed look from Sarah as she considered the possibilities.

Although she looked excited at first, the initial wave of eagerness wore off and she started to consider if she was willing to take the risk.