Bound Rena - Part 1: The machine

Wrapped in skin-tight, black, and shiny latex, Rena could feel her skin gasping for air. But she couldn’t take it off, her hands are secured behind here with fingerless gloves. She was unable to stop drooling as her mouth is spread open with a red spider gag.

The tight ropes wrapped around the back of Rena are hooked on stainless-steel loops screwed down on the wooden floor. It is keeping her pinned face down to the floor with her legs are spread open. She is as vulnerable as she can be, with here exposed, dark butt waiting to be used.

Her mistress Ju is a tease, she likes seeing Rena in vulnerable positions, Ju pored down a bottle of warm lubricant on to Rena’s butt. Ju does not want Rena to be in pain, she wants to keep Rena as loose as she can be.

Ju brought her special red suitcase and kept it in front of Rena. It’s not even opened yet, but Rena has her dove eyes as widened as it can be. Rena knows that the suite case contains nothing but anal toys, today will be a special day, where Rena will get her butt stuffed and ruined by Ju.

Ju walked behind Rena, and pushed the tip of a massive syringe full of lube against Rena’s butthole. “It is time” Ju said in a melodic tone.

Rena is well-prepared for this, after all, this is not the first time Rena got special attention to her butt, and this certainly won’t be the last!

The warm lube is entering her insides, it feels smooth like honey, but it is still a foreign object for her body, so she has to try hard to keep it all in.

Rena was playing with a butt plug before the session started, so it’s a bit challenging to keep her loose asshole shut, but she succeeds. Rena does not want to be punished, today is a day she wants to enjoy the love Ju rewarding her with.

Ju pushed her finger in Rena’s butt, seeing as it went in without any friction, she pushed another finger in, then another. Ju was surprised to see that Rena could take an entire fist in her, this has never happened before. “Have you been secretly training Rena?” Ju asked. Rena nodded, and said “yehh” through her still drooling mouth.

Ju smiles, “Look at all that drool! I could have stored and repurposed it instead of opening this new bottle of lube, oh well, today is special, we can be a little wasteful”, she spanked Rena gently with her left hand.

As Rena can now take a fist, Ju gets excited, and got up fast, leaving Rena with a gape bigger than her opened mouth. Ju closed her special suitcase. “You need something bigger” said Ju as she walks to the next room.

Rena’s heartbeat increased, she doesn’t know what’s in that room, she was never allowed inside it.

Ju returned with a black box with four wheels, she pushed it around and brought it behind Rena. “I have pushed long dildos inside you before, and today it is wide enough that you could take my entire fist like it’s nothing.” Ju said as she starts unpacking the box. Rena wants to look back, but she can’t. She could hear some metallic noises, Rena left her imagination run wild, what could mistress Ju be planning?

Ju: “Since you can take things that are long and thick, I aim to know how fast you can get fucked today”.

Rena understands now, but she is not really prepared for this. She has never used a fucking machine before, and mistress Ju wants to push Rena to the limit with it today.

Rena tries to relax, she is not scared, she is excited, she always fantasized about this before. She loved watching the Device Bondage videos, she always wanted to model for them and be at the mercy of their custom-made fucking machines, today that dream will come true.

Ju pushed the dildo into Rena’s butthole, it’s a bit tighter than before as she is excited, but she could still take it. The dildo is 10 inches long and 4 inch thick. A monster dildo that Rena has tried before but failed.

Ju turned on the fucking machine in its lowest setting, Rena has a strong grip on the dildo with her butt, and the machine is not moving much. Ju turned it up a little, now the machine is moving inside Rena, still slow and shallow, the machine worked to prepare here butt for a smooth ride.

Mmm… Rena moaned, she enjoyed being stuffed like a turkey. Ju walked in front of Rena, and removed the gag. “You remember the safeword, don’t you?” Ju asked while lifting Rena’s chin. “Yes mistress Ju” Rena responded with her sparkling eyes.

Ju walked behind Rena again, and slowly increased the speed, its rhythmic movement brought a wave of pleasure to Rena. “Can I please cum, mistress?” Rena asked. “You can cum all you want today, my pet”, Ju said as she increased the speed. Rena is not the only one with fantasies, Ju was waiting for this day just as much as Rena was.

“The machine won’t get tired, and the night is still young, I will see you after twenty minutes, my pet” Ju pressed a button on the machine and walked away.

Rena is curious about what that button does, but she knows that she will get to know it eventually.

After a minute, the machine increased the speed a little, still manageable for Rena, but she can’t stop the orgasms from stopping. It’s starting to hurt her tummy a little, but she can take more. She was trained to take multiple orgasms before.

One more minute passed, and the machine increased the speed again. It’s thrusting the insides of Rena much faster than before, and she knows, it’s going to keep increasing the speed. Mistress won’t be back for another eighteen minutes. Rena is a little scared, she hopes that mistress Ju didn’t wander off somewhere, she hopes that mistress Ju will hear the safeword she says it.

On the third minute, the machine slowed down a little, so Rena is a little relieved, maybe it won’t increase more than the last time. Rena relaxed with deep breaths, and got ready for another wave of orgasm to rip through her.

It almost the fourth minute, it already feels like an hour without the mistress, but the machine is doing the job now, and Rena can’t wait for her mistress to be back and watch here get fucked.

It is the fourth minute, and the machine sped up again, but this time it is much faster, Rena tried to count how many times it’s thrusting her in a second, but she lost count at 6. Fast, hard and ruthless fucking was too much for her, but the machine slowed down on the next minute, giving her a break from the torture.

The machine was set in random mode, the speed Rena experienced on the fourth minute was the fastest, but she doesn’t know that. She hopes that it won’t ever be faster, and the machine kept fucking her in random speed for the remainder of time. In the twenty minutes, she had to suffer that extreme speed six times. Rena was able to handle it well after the third one, as her insides are now moulded for that thick dildo.

When Ju returned, she was pleased to see Rena taking the fastest speed like a professional. Rena’s sweat is dripping down her cheeks. Ju turned down the machine speed, and cut the latex suite off with a safety scissor to give Rena more air.

After a few minutes, Ju turned off the machine, kissed Rena on her plumb lips and said, “I will return after another ten minutes, then we will try the fastest setting again, okay?”

Rena is still bound down on the floor with her butt up and face down. Ju pulled out the dildo out of Rena and walked away again with a smile on her face. Rena got what she dreamt of, may be this will happen regularly?