Step Sister Corruption Part 142 – Day 77 Brynn Pays Her Debt (fiction, M/F/F, d/s, teaching, step siblings, con)

*Summer*

“You want me to do what???” exclaimed Brynn.

I calmly spoke, for the second time, “Get in.”

Brynn looked at the box that I had uncovered with a sheet after I moved everything so it could be where the ottoman was and plugged it in.

Brynn instantly knew what it was once the sheet was removed, “Why do you have a calibration box?”

I smiled at her, “I have my ways.”

Brynn looked at me skeptically before looking at the box.

Once I set up the camera I looked at Brynn, “Get in.”

And here we were.

Brynn opened her mouth but I cut her off, “Remember this is what **you** agreed to with Gabe when you agreed to letting **me** torture you. This is it. Now get in.”

Brynn sighed and stripped down to nothing grumbling the entire time she lost an article of clothing until she was completely nude.

She looked at me one last time making sure this is what I wanted, “How long do I have to be in here?”

I shrugged, “Until I feel you have paid your debt and You’ve learned your lesson.”

Brynn looked at me, “And after this I’m allowed to come over and have Gabe fuck me.”

I smiled, “As long as you understand Gabe is mine then sure.”

Brynn took one last look at the box before she looked at me, “Fine.”

She gotten down on her knees and reversed her way into the box and positioned herself to where the phallic object was mere centimeters from her pussy’s opening before she straightened.

I helped her attached the small funnels on her nipples before closing clear door and locking it in place.

Then I went to the back and opened the panel to retrieve the cylinders pre-loaded with fluid that I *had* primed for Morgan on its initial use but somehow got distracted thanks to Kelly overdosing Sabrina with Lilith’s Elixir.

I thought back on the night thinking it was fun but was disappointed that I didn’t get to see the box in action and have been kind of busy ever since.

Tonight I was going to see what the box does and how closely it resembles it’s professional counterpart.

But first I need to change out the mixture that I pre-loaded for Morgan as I was being light on the fluids.

With Brynn I decided to be a little more aggressive.

Vindictive? Who me?

Ok yes I’m pissed about what she did and I was going to make sure her debt was one that’ll be sure to make her remember.

I opened the container that was slated to go into the subjects pussy that was filled with a white viscous liquid that instantly made me think of a guy’s cum when fresh.

Or semi reminded me of freshly melted cream cheese frosting on home baked pastries….maybe a little thicker than that.

The liquid, when I read the contents of the liquids, was supposed to help the subject’s inner pussy walls absorb whatever was added to the mixture as well as help tighten a female’s pussy and help strengthen their elasticity. Along with help with the subjects overall pussy health.

I originally added just a couple of drops into the mixture from the variety of liquids that I got for this box.

I wanted to see what a couple of drops would do.

Now I added a dozen more drops from the different additives that would be going into Brynn’s waiting body.

As I added the drops *this should teach you* and *you’re going to go mad with lust*.

After I put in the drops I resealed the container.

Then I opened the container for the breasts and did the same thing.

The only thing I was missing as I did all this was laugh maniacally and say some evil shit that usually comes out of evil people in the movies.

That or cackle or something signaling to Brynn that she was fucked.

I resealed both containers and walked back to the back of the box and installed the containers making sure my sharpie writing on the containers matched my nail polish markings above the insert locations. White for the Pussy and red for the breasts.

Or was it white for breasts and red for pussy?

No I’m sure it’s white for pussy and red for breasts.

I closed the back and flipped the switch turning on the box.

I looked in the front to see Brynn’s concerned look and tried to console her, “Ok I’m starting the process. You ready?”

Brynn shook her head, “No not really.”

I flipped the switch on the back to rise the phallic object into Brynn’s nervous pussy.

The moment the box was turned on the noise from the box was relatively minimal aside from a low *burr* sound coming from the box as the object slowly rose.

Good. I was afraid I didn’t put that together correctly.

The tip hit Brynn’s hole and I watched her adjust herself as it slowly penetrate her and saw that she gave a look telling me she was feeling the phallic object enter her canal.

I kept a close eye on the object rising to make sure it doesn’t impale Brynn more than it needs to. I watched and watched as the object slowly rose until I saw roughly four and half inches disappear into Brynn’s pussy.

Or at least I assume that’s four and half.

Really need to mark on the device what is four and a half because I was purely eye balling it.

With the object lodged inside Brynn it was time for the *torture* but first, “You ok in there?”

Brynn spoke softly, “Other than being full. I’m fine.”

I smiled and flipped the switch turning on the pump to her breasts so there was an air tight suction.

Brynn let out a small gasp as she felt her nipples get suctioned into the funnels.

I smiled seeing her obvious discomfort. But I let my smile only last a second.

I turned off the pump after a few seconds once I was sure there was an air tight seal on her nipples.

Then I flipped the two switches turning on the pumps so her nipples and pussy can be flooded with **my** nasty concoction.

The box let out a low *whirr* sound as I watched the tubes to her breasts slowly fill until they got to her nipples.

I imagined the tube to the porous phallic object also got filled.

Mind you it wasn’t fast as I watched as it was painfully slow as the tubes slowly filled until it got to her nipples.

Once I saw the clear funnel holding her nipple in place fill I quickly turned off the pump to her breasts.

Then I watched keeping a close eye on Brynn’s pussy as the box let out it’s low *whirr* sound.

Finally after a few minutes I saw what I was looking for….white fluid leaking.

I quickly turned the pussy switch off.

Then I walked over to the sofa and watched as Brynn’s body absorbed the fluids to see what happens.

Brynn looked at me as I watched her with my shit eating smile.

I sat there lightly thinking I wish I had something to drink as I waited as I kicked my feet up on the ottoman that was to the side of the sofa.

Then a muffled sound came from the ottoman the moment I kicked my feet up on the ottoman scaring the crap out of me.

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