As people live, their bodies naturally break down.

    If you assume a posture that is comfortable for you but uncomfortable for your body, your body will gradually become twisted, and the burden will build up and build up until one day, something like a herniated disc will occur.

    As the shock to the joints received on a daily basis gradually accumulates, the cartilage eventually wears away, causing the bones to creak and wear out, leaving you walking on the ground with worn-out knees.

    A body that has lost its youth robs it of its vitality and energy, and an aged brain robs it of its memories and recollections.

    Harmon. Age 30.

    He has lived in this harsh world long enough.

    In this day and age, it is common for people to fight each other, not to mention throw tantrums.

    In this world, where even if you just breathe, a lot of dust comes in, so as you get older, you start to cough and many people die of lung disease.

    Harmon lived as a collector, and as he fought against machines that were far stronger than humans, the damage piled up on his body.

    My right arm wouldn’t bend properly, so I had a mechanical skeleton built into it. Then I made a mistake and my shoulder got damaged, so I had that part repaired with a machine, too.

    The entire right knee was replaced by a machine.

    I was forcing my immobile body to move using a machine.

    That’s why Harmon’s body was showing signs of mild rejection as the machines were implanted, with grayish-white circuit-like marks appearing all over his skin.

    There were a lot of them, especially on the arms, because of the chances planted on the arms.

    “Hmm.”

    On the morning of the day the operation began, Harmon suddenly looked at the condition of his body.

    The muscles attached to his body were the result of his efforts to eat carefully while living a difficult life as a scavenger in his childhood, and at the same time, the result of his efforts to fill his failing body with muscle.

    The same goes for machines implanted in the body.

    Harmon dreamed of being a mechanic. He had to hit the jackpot as a collector or become a technician like a mechanic in order to avoid living a shitty life.

    Harmon never dreamed of striking it rich as a collector. He didn’t want to leave his future up to that chance.

    So, I tried to save up money while I was young, even if it meant pushing myself too hard. In this case, I collected valuable machines. Then I gave them to a mechanic to get the skills.

    Based on the skills I gained, I went under another mechanic. I stole skills to learn and stole knowledge to learn, and gradually built a foundation.

    Harmon was able to seize his opportunity and build a foundation for success thanks entirely to the foundation he built during his younger years.

    Even though the price was a broken body.

    “Master.”

    “Oh, right.”

    As Undine approached, Harmon offered his back. On Harmon’s back, near his right shoulder, there was a hidden, unseen injection port.

    Undine inserted a small tube into it and drained the oil needed to operate the machinery built into Harmon’s body.

    Harmon closed his eyes and felt the oil flowing into him. The sound of the oil pouring, the strange shaking of the machine as it filled up.

    As the oil poured in, the gears began to turn as they received kinetic energy from the falling oil, and once they had turned, the gears began to turn on their own while burning the oil.

    Then, his stiff right arm and knee moved freely, and Harmon got up from his seat.

    “Hoooo.”

    After Undine finished turning and draining the remaining waste oil, Hamon got dressed and sat down at the table.

    “I told my subordinates. I’m taking the day off for research purposes.”

    “Okay, I understand. I plan to create a coolant to hide the heat generated by the medical facility.”

    “Yeah.”

    Medical facilities are experiencing massive fever.

    Naturally, medical facilities generate a lot of noise when in operation, as they are cooled by oil and vents to dissipate heat.

    Undine figured out how to fix it by stopping the flow of air to the vents and cooling oil, and quietly turning on her own coolant.

    “Of course, you can’t hide it completely. So, there needs to be a commotion from outside.”

    “That’s what Lucky will do.”

    As Harmon put his hand on Lucky’s head and stroked it, Lucky, who was munching on raw meat pulled out of the machine, turned his head.

    “Woong?”

    “You’re talking, you.”

    As he said this, Harmon put his arm around Lucky’s shoulder and placed his hand between her legs.

    Lucky, who nodded his head in understanding and leaned against Harmon, lightly tapping him.

    “Ugh, haaang.”

    Lucky’s onahole body, which was completed with Undine’s consistent care, spurted out fluids with just a light stimulation and made the vagina warm enough for insertion.

    “Then shall we enjoy it until the time comes?”

    At Harmon’s beckoning, Undine took off her maid’s outfit and became naked, and Lucky took off the clothes Candy had made for her and became naked.

    * * *

    Harmon was lying comfortably with his eyes closed, with Undine’s thighs cut off.

    Undine wanted to see Hamon, who was so relaxed that she looked like she might fall asleep at any moment, but unfortunately she couldn’t because her chest obstructed her view.

    Instead, Undine lowered her chest towards the corner of Hamon’s mouth, naturally pressing her chest against Hamon’s face, enjoying the feel of his face while enjoying Hamon’s playfulness as he bit, licked, and sucked her nipple with his lips.

    At the same time, Undine created a massage oil gel in her hands and spread it widely over Hamon’s chest, gently massaging him.

    While the upper half of his body was enjoying happiness in Undine’s arms, Ha-un-gi was squatting in Hamon’s lower body and inserting his penis in a riding position.

    “Hah! Phew! Haaang!!”

    In the past, she was lucky enough to just tremble and convulse whenever she was penetrated due to the stimulation of orgasm, but as she gained experience, she developed a knack for it.

    “Eungkuk!”

    Lucky, who started to move roughly using her body that was trembling and convulsing, stroked Harmon’s cock with her tightly pressed vagina.

    Crunch! Crunch! Crunch!

    Lucky shook his hips absentmindedly and drooled from his mouth. When the drool he poured out fell on Hamon’s stomach, he crouched down and started licking Hamon’s stomach and drinking the saliva again.

    “Ow. Chwurup. Chuuuup.”

    Lucky, who had sucked up all the saliva he had poured out, curled up even more and put his tongue on Hamon’s belly button.

    “Heuup.”

    He sticks his tongue out wide and licks above the belly button, then carefully covers Hamon’s belly button with his lips.

    And then he started kissing Harmon’s belly button as if he was a couple kissing passionately.

    “Choosup. Swish. Haa. Huh. Swish. ”

    Lucky, who shared a sticky deep kiss full of affection as if he were dealing with a truly loving lover, flexibly twisted his waist while giving various stimulations to Harmon’s dick.

    As Lucky’s vagina tightened, even if he twisted his waist a little, the changed angle provided a different kind of stimulation.

    If I just shook my waist normally, I could feel persistent stimulation like being sucked by a suction cup through my vagina that was tightening strongly.

    By gently twisting my waist and moving, I could feel the stimulation of my vagina tightly wrapping around my vagina and squeezing it strongly.

    “Haaak! Haaak!”

    And when Lucky crouched down like this, she was able to quickly move her hips while leaning against Harmon and enduring her climax.

    A lucky person’s vagina that quickly scans the area while going back and forth over a very short distance.

    Harmon’s penis couldn’t hold out for long as the stimulation gradually increased rapidly, and he poured his semen deep into Lucky’s vagina.

    Harmon, who had first ejaculated into Undine, then roughly shook his waist while hugging Undine from behind, who was in a doggy position on the floor.

    “Black. Ugh. Aah!”

    Undine, with her head flat on the floor and her buttocks raised high, is giving her vagina to Hamon.

    Lucky squatted down on Undine’s head and kissed Hamon.

    One of Harmon’s hands was kneading Undine’s buttocks, enjoying it, while the other hand was roughly teasing Lucky’s chest and nipples.

    “Ugh! Ugh!”

    Every time Harmon thrusts his waist, Undine’s head shakes violently and is covered with Harmon’s semen that flows out from Lucky’s vagina.

    “Undine, it’s cheap!”

    Brrr!!

    After hugging Lucky and roughly kissing her, Hamon thrust his waist deep into Undine’s vagina and ejaculated coolly, he laid Undine down on her back and laid Lucky on top of her.

    After overlapping the two like that, this time he inserted his penis between the two of them’s cunts and moved his waist while enjoying the close contact between the two cunts.

    Gulp! Gulp! Gulp!

    Between the two vaginas and the two urethra that are not properly interlocked, the love juice, Cooper’s fluid, and semen mix together and an obscene sound resonates.

    Harmon, whose vagina had become sensitive after cumming twice, rubbed his vagina between the two for about five minutes before cumming again. The semen Harmon ejaculated seeped into the space between Undine and Lucky’s lower abdomens, entangling lewdly between their bellies.

    “Ah. I’m tired.”

    “Then, Master, please lie down still. We will serve you.”

    Undine, who had Hamon lying down, started licking the area behind Hamon’s balls and anus with her tongue, stimulating him.

    While Undine was stimulating his sensitive testicles, Lucky put the shaft into his mouth and pushed Hamon’s shaft deep into his throat.

    Since Harmon usually enjoyed Lucky’s throat when he was bored, her fellatio had become very skilled.

    Harmon, who had been enjoying the service of one humanoid and one mutant with his eyes closed, ejaculated without saying a word, and the semen that spurted out of Lucky’s mouth covered Lucky and Undine’s heads, staining them both white.

    Perhaps it was to say a final farewell to his old body, but Harmon spent a hot time covering Undine and Lucky in their semen until nightfall.

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