...grinding and edging...

Old Mo kept plunging his fingers into the honeypot he had gotten so familiar with during the last few days, robbing more and more sweet gasps out the horny girl.
Generally speaking, some casual fondling shouldn't have gotten Mei so aroused... but she was still sensitive from the previous day's treatment and night's fucking, and while putting up the facade of bathing her the old master sure didn't hold back in pushing all the acupoints on her tits and belly that would get her in heat.

Adding to that the orgasms he just wouldn't give her and the little tricks he learned in years of seducing engaged and married women...

...and he got a panting Mei fully in the mood for some naughty fun.

Unlike the previous day she wasn't nearly cum-dumb enough for him to try anything beyond the line, but he really wanted to see how far he could push it while she wasn't wasted... after all the more she'd allow while fully sober and in full control of herself, the more loopholes he'll have to exploit in order to cross more lines she'd rather not allow otherwise.

After all, how could they be bathing together with him freely touching her like that if not for him exploiting loopholes?

She agreed to his treatment and he abused the right to gain justified access to her body, using her own agreement against her to freely touch her body without reproval. So what if she didn't like it? He was her doctor, he called the shots. And he made it clear he'd bathe her if he found her creampied during treatment, something she'd make sure to avoid... too bad he could **** his right to touch her in order to plant some cum in her pussy. So what if it wasn't Ren's? She was leaking cum, so he'd get to wash her.

Since she agreed to it all, it was now hard to fault him for the way he was touching her body, especially since he also used his rights as her doctor to silence any complaints about the sexual harassment... at every step his advantages would compbound to give him chances to overstep his limits without her being able to call him out on it, and he was sure to take this chance to get something more out of her.

If she did allow more to happen, he could use it as a precedent to make it happen again or even establish it as a routine...

Getting her so horny she'd do anything in order to cum was the best way he could think of in order to have her make the kind of mistake or bad decision he could take advantage of, and also the most fun way since he could get to play with her breasts and pussy as much as he wanted!

One of his hands never left her breasts as it kept squeezing and kneading, pinching her nipples from time to time, whereas the other had long since washed out whatever cum could be cleaned out and was now purely playing with her pussy, enjoying her moans as he kept pushing all her sweet buttons... not that his hands were the only parts of his body busy enjoying hers, his very erect 12 inches deformed pole was lodged between her ass-cheeks and enjoying an unintentional butt-job as she kept squirming from his touch.

Not that she'd mind, the girl had noticed the heated hardness but with his fingers at work... well, the dick wasn't relegated only to the back of her body but also to the back of her mind.

She selectively forgot about its existence, subconsciously unwilling to talk about the elephant dick in the bathtub and much more concerned about how good he was making her feel and how hard she was gonna cum from this... indeed, cum, till now she had been focusing more on enduring and now show how affected she was by his touch, but the more this went on without an orgasm and the closer she got to it without ever obtaining her peaking prize, the more **** she got for her sweet release.

Old Mo smiled as he felt the girl more and more actively grind her ass back against his dick, even look up at him with needy eyes... she was unwilling to voice her need but her expression said it all.
All indeed, and not just for her need to cum but also for the green light he was waiting for before stepping up his game!

Getting his prick smothered by her ass was nice but it was now time to give it some real action, and some willing action at that from this slut-in-training.
It was nice to see her confused look as he pulled his fingers out her drenched pussy, but he didn't show it and instead he grunted "What are you getting all complacent for? I've been doing all the work while you..." he pulled up the fingers previously buried in her pussy, showing her the kind of slimy wetness that just couldn't come from common water "...are you getting off from this?"

Him pointing that out made her realize just how much of a slut she must look like right now.
Sure, he might have some fault in the way he was touching her, but why was her body reacting so much?
Her arousal dampened her ability to reason about how it was just a natural reaction for any girl being touched so intimately for so long, but she was now too horny to think that far and seeing her blush in shame he knew he got her in the bag.

His hand went back down between her legs, but this time instead of plunging inside he simply grabbed her by the pussy and pulled her up.
Mei squeaked in reponse to his unexpected maneuver, not realizing the hand on her tits had gone down in the water too to push down his dick, down enough to poke between her legs once he let her go back down!

He didn't aim for penetration, be it anal or vaginal, he could try but he might ruin his effort if he pushed for too much.
For now he was happy listening to her starled gasp as she felt and saw his warped dick rise between her legs, the girl practically straddling the shaft and feeling its fleshy and veiny irregular texture right against her slit...

She was obviously shocked and alarmed by the turn of event, but soon turned meek as his hands returned to her breasts and once again gave them their full attention... she was too horny to ignore his ministrations, and with him skillfully kneading her tits and pinching her nipples she even ended up subconsciously rocking her hips from the stimulation, the movement making her rub her slit against the meaty shaft it was riding upon and gasp in even more pleasure while clenching her legs around it!

"What are you getting all giddy for? I've been washing you the whole time, so it's about time you show some gratitude for it by washing me back. Look at it... " while saying so he thrusted, purposefully grinding his pole against her pussy "...it's your fault it got so hard, you know? The last you could do is to make it all nice and shiny, and i don't mind you using your nice tights for that or even those big jugs of yours..." he kneaded her breasts while saying so, obviously hinting at a tit-job...

In her current state, as hesitant as she was to go through with it, his words indeed made sense... but could she go through with it?
Using her tits would get the dick away from her pussy, but wouldn't she be too much of a slut to willingly give Ren's master a tit-job? She didn't even consider how he asked her to just clean, and she was filling in the rest herself. However if not the tits... kept rubbing her pussy against it? That too didn't sound like a good idea, it was never a good idea to keep someone else's dick near the pussy that was supposed to belong only to Ren! However she'd be in control, and she really wanted to cum right now...