With renewed passion

Sarah paused momentarily and your own eyes widened as you both understood what Emma had asked Sarah to do. Her lips slowly started to speed back up and the look in her eyes told you everything that you needed to know.

The fact that Sarah was going to try and take you even deeper was already enough to send tingles down your spine but as you saw that she was genuinely thinking about trying to attempt it, you couldn’t help but clench your fists on the edge of the mattress to prepare yourself. Emma was still whispering sweet nothings into Sarah’s ear and the small bits you were unable to now block out, were words of encouragement to spur your sister on.

You could tell Sarah had made up her mind as she stared up at you, her lips slowly moving further down your shaft until she held herself at around the deepest she had previously taken. She had roughly half of your dick in her mouth while the hand holding you in place had stopped her from going any further. She moved one of her fingers that was wrapped around you up and out of the way before she started moving again, trying to pick up her pace which seemed to make it easier for her.

You continued to stare down at your sister who now had her eyes closed in concentration, watching and feeling how she was making progress until she was once again able to place her lips against the next finger still on your shaft. She opened her eyes in glee as if looking for your encouragement on top of whatever Emma was saying but with what she was doing to you currently, you didn’t trust yourself to start speaking.

All you managed to do was show her a strained smile and bring one of your hands down to stroke her head but it seemed even that was enough to boost Sarah’s confidence. Given the extra depth, you could now no longer feel her tongue against the underside of your cock and instead felt like you were just about moving into her throat. Given her earlier pace, she removed a second finger and pushed herself deeper, wanting to replicate the progress she had made earlier.

You could tell immediately that her overconfidence had made her take your cock a bit too far as her eyes widened and she was **** to pull back and start coughing, a string of saliva still hanging from your cock to her lips. You had to admit that the feeling of her throat as it tried to **** your dick out was more pleasurable than you would have thought but if it was at the cost of causing your sister any damage then it definitely wasn’t worth it.

Sarah looked a little teary-eyed as she caught her breath but Emma tried to reassure her by rubbing her bare back.

“Sorry” Sarah mumbled, apologising when neither of you thought she should.

“There's no reason to be sorry. We didn’t expect you to get it on your first try and you certainly got a lot further than I’ve ever gone” Emma joked, leaving out the fact that she had never even tried to take you in her mouth.

“Yeah trust me, what you have been doing has far has been pretty fucking great. You don’t have to push yourself any further if your gonna hurt your throat” you added, stroking her head again while she turned away slightly with a blush.

To avoid saying anything she would regret, she instead placed her lips back around your cock and started sliding up and down with a renewed passion.

“Oh fuck” you couldn’t help but let out, forcing you to grip the bed once again.

She went back to using her fingers to guide how deep she was going and although she tried to get back to where she was before, it seemed that her experience had put her off trying to go any deeper for the moment and she just focused on now getting you off. You were slightly disappointed that things couldn’t go further but Sarah soon made those feelings disappear as her tongue worked its magic and caressed every inch it could reach.

You had been pretty passive during the whole encounter but it took basically all of your concentration to hold on and not give in to Sarah’s continued ****. Every time you managed to look down you saw Sarah staring up at you as she watched your every move and Emma sat right by the side of her, whispering her every desire into Sarah’s ear.

That was until she saw you looking in her direction and a knowing smile appeared on her face that could only mean she had something planned.

“I think Sarah deserves a reward for her attempt. Don’t you?” she asked, moving the hand that was still placed on Sarah’s stomach up and towards her chest, getting close to her tits before just shying away.

You felt like you couldn’t get a word out now that Sarah had increased her pace at both what Emma was now doing and the hint of a reward but you managed to let out a groan of approval which Emma used to continue talking about her idea.

“See even he agrees. You’ve been a good little slut, gagging on your brother’s cock. Of course you deserve a reward!” Emma continued, still moving her hand closer to Sarah’s chest without quite touching her tits.

You had no idea what Emma had planned but with Sarah’s renewed effort, you were starting to get dangerously close to cumming and it seemed that Emma knew that without you even having to tell her.

“Can’t you see what you're doing to your brother? He’s gonna be cumming in that pretty little mouth of yours soon and there’s nothing we can do to stop it. Nothing ‘you’ can do to stop that cum filling your mouth and sliding down your throat” Emma said, starting to get more and more excited as she carried on.

“But I think you should change that. I want you to…” She continued, moving her lips towards Sarah’s ear and whispering the rest to her so that you couldn’t hear.

Whatever she said seemed to be enough to persuade Sarah as she worked her head even faster, forcing your cock into her throat every time she bobbed and causing you to finally reach the tipping point. You clenched your hands and tilted your head back as your cum shot out and filled Sarah’s mouth as she kept your dick further into the back of her mouth.

You knew that she was struggling to keep all your cum in her mouth as you felt her cheeks bulge and although you expected her to start swallowing as you continued to cum, you looked down and saw a determined look on her face as she tried not to swallow. A small dribble of cum left her lips and she was **** to pull back as your remaining load splattered against her face and down onto her tits now that she had realised your cock from her mouth.

The sound of your heavy breathing filled the room and Sarah tried to catch her breath as well, only breathing through her nose as she refused to swallow or spit out your cum. It seemed like Emma’s own rough breathing was now joining yours as the sight of your own climax had been enough to also push her over the edge, her eyes looking glossy as she luxuriated in her aftershocks. You were confused as to what Sarah was doing but your questions were answered when Sarah turned to Emma with an expectant look. Emma sobered up and quickly looked in your direction to make sure you were watching. After giving you a playful smirk, she closed in on Sarah's lips and started to make out with her.

You sat there amazed as both your girlfriend and your sister started to kiss each other while they sat naked on their knees before you, swapping your cum between them as Emma unexpectedly let one of Sarah’s fantasies come to life.

Author's note: Spoiler chapter will be updated soon :D

We are getting close to being in the top 25 sci-fi stories on Chyoa and also nearly in the top 400 stories overall. I just wanted to again express my thanks for all the support and messages so far and hope you continue to enjoy the story as it continues :)

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