Down to her ankles

Rebecca must have felt that she was baring her all to you but you had other ideas in mind for her. Before she felt brave enough to turn her head back towards you, you crouched, reached down onto her thighs and quickly moved your fingers up and under her skirt. She jumped at the contact but you pushed ahead and found the waist of her panties, griping the band and pulling them down.

Rebecca tried to close her legs to instinctively stop you but you had the upper hand, pulling her underwear down to her ankles before she put her knees together. Her head turned towards you but you had already prepared yourself, taking the chance to raise back up and lock your lips against hers, silencing any issues she may have. You had managed to see a wet patch in her underwear once they hit her ankles but that just added to all the other signs telling you she was getting off on this as much as you.

She instantly seemed to melt under your touch and any word of complaint she was about to say disappeared from her lips. Your footing was a bit precarious as you were now leaning quite far forward to kiss her. Even with your position, you still reached down to grope her tits and sunk your fingers into her flesh, grazing her nipple with your thumbs as you were a bit rougher than you usually were with your subjects.

You hated to make comparisons but you couldn’t help but do so when you saw and felt her breasts. The shape was perfect for her body like all your subjects seemed to be gifted with and size-wise, she was in the middle of the pack. There was no doubt in your mind that Mom was in first place if you were to rank by size, closely followed by Grace. Next would be Lucy and then Rebecca would be forth before finally Emma and Sarah at the very bottom, even with her recent upgrade.

It felt like a bit of a cliche to say but your preference of tit size was quite minimal. Sure you had had fantasies revolving around Mom ever since you could remember but that didn’t mean to say you hadn’t jerked off to any of the others, just focusing your attention on some of their other assets instead.

With Rebecca, your fantasies had been focused on the generic student-teacher plots you had seen in porn. Her seeing you after class for ‘detention’ or even bending her over and fucking her in front of everyone in a lesson. Of course the latter was gonna be impossible but the fact that you had already come this far was what spurred you on, planning ahead to have the greatest chance of living out each and every one of your fantasies that you could make possible.

Making out with said teacher while she was basically stripped of all her modesty all while she was handcuffed to her chair…sadly hadn’t been a fantasy you had in the past, either because you weren’t imaginative enough or you thought it was too foolish to even consider. A fantasy you did have though, finally made you pull back from the kiss and prepare to move on.

“I think I’ve waited long enough” you announced, standing back up and allowing yourself a proper look at Rebecca.

She already looked like she had had a wild night of sex with her dishevelled appearance but that only made your erection strain even more against your jeans as her chest heaved up and down. Rebecca gulped as you spoke and her eyes trailed down to your crotch, watching as you undid your zipper now slightly above her eye level.

Rebecca had slipped slightly down her chair but that left her at the perfect height as you pulled out your cock, her eyes widening as you rested your shaft against her face. Her breathing sped up which you now felt against your cock, towering above her to give yourself some extra confidence and **** her into a more submissive position.

“As much as I enjoy seeing you like this, I think we both know what I’m expecting next Becky” you said, dragging your cock back and forth across her lips.

You were sure Rebecca got the picture and her lust-filled eyes still looked deep into your own but it seemed she was hesitating.

“C-can you add a new.. ‘Safe word’ method” Rebecca asked, making you realise the issue.

With Rebecca’s hands tied behind her back and with her mentioning this, she knew her mouth would be occupied if she wanted you to stop. You had already thought about this and with her not being able to tap your leg on this occasion, you'd have to go with the more subtle option.

“Hmm with the handcuffs on… Wink three times. If you think I’m looking away then get my attention by tapping your foot three times on my leg. Got it?” you asked, running your hand through her hair to show you weren’t upset at the interruption.

“Yes sir” Rebecca replied, now too horny to worry about your title.

“Good girl. Now, put those lips to some good use” you ordered, keeping your one hand resting on her head and gently nudging her in the right direction.

All the hesitation was now gone from her movements and her eyes gazed at you as her tongue moved from between her lips and ran against the underside of your cock. She couldn’t use her arms to steady herself but once she opened her mouth to suck on the tip of your dick, the hand you had kept on her head helped her stay in place. Your eyes remained fixed on hers, keeping watch to make sure she winked but even without the system you had in place, you would have watched just to see her push further down your shaft with every stroke.

With the pleasure she was giving you, it was hard to remain passive, eventually making you push forward to meet her lips just to push your cock even deeper into her throat. It took a minute for the both of you to get the right rhythm and a few gags from Rebecca but once you were past that hurdle, you felt like you were on cloud nine.

You thought you were getting close but as you kept staring at Rebecca, her moaning against your cock got more and more urgent. With her gagged and cuffed, it became too much for her to handle and the whole situation of her fantasy being played out was enough to for her to push her over without any physical stimulation.

She stiffened up in her chair, her eyes nearly rolling back into her head as her orgasm started. Even with this going on, you continued to piston in and out of her mouth to add to her fantasy, slowing down your pace slightly but still forcing her to be a toy for your own lust. That didn’t mean to say you couldn’t add to her pleasure though as your hand not holding her head steady moved towards her tits, giving one of her nipples a pinch and eliciting a louder moan from her throat.

You wouldn’t have expected her to cum hands-free but you apparently had that power over Rebecca and you knew that things were only going to get more intense for the both of you when you developed the KDK effects even further. Her whole body seemed to go slack once she reached her peak and although at one point you were worried she might have orgasmed so hard she went ****, her eyes managed to meet yours even with her looking dazed.

Another worry was that your cock in her mouth would end up poorly for you but seeing her like this and knowing what her mouth had done to you made it hard to pull out, another choice where you were unsure if your lust would win in the end.