The Reason I Spared You
Clearly, I had the advantage in every aspect.
Strength, technique, ability—everything. I was the only human who had somehow survived in this era, capable of wiping out two androids in an instant with overwhelming power.
I should have just taken Kang Chanwoo’s body and operated the baby-making factory, humping him for twenty-three hours a day.
But I lost.
...Why?
The probability was impossible. The odds of me losing to two 5th-generation androids were a mere 0.000082%.
In other words, it was "impossible."
Yet, I lost.
Is this because of Kang Chanwoo?
Or was it because of that mysterious white-haired android that appeared at the end?
No, if not that... is this what they call the power of "humanity" itself, something that can never be calculated by numbers?
'In the end... I failed to fulfill my mission.'
N.E.M.E.S.I.S. realized it.
She was the one and only air defense program designed for humanity. The oldest and most primitive early model of the Earth Reclamation Project—R.P.M.
But all those missions, meanings, and reasons for existence had crumbled miserably at this very moment.
So, there was only one option left.
Function termination.
In other words, death.
As her consciousness faded from Revi’s final blow, N.E.M.E.S.I.S. thought just that. She believed she would never wake up again. No, the very concept of "waking up" would cease to exist.
However.
"...?"
She opened her eyes.
What she felt on her body was the sensation of bandages wrapped around her. And an old, old-generation lightbulb was flickering slowly.
N.E.M.E.S.I.S. knew instantly.
This was the unused "ward" in the Underground Village that she had designed herself.
"Why am I... receiving treatment?"
I clearly lost miserably to my opponent.
Instantly, various possibilities flashed through her mind. Why am I alive? Why am I being treated? And then, she reached one conclusion.
"I see... I have become a 'stress-relief cock-case' exclusively for Kang Chanwoo."
In the era when humanity existed, there was a famous slave culture where defeated women were captured alive and fucked whenever the victors wanted. If called elegantly, a sex slave. If called vulgarly, a cock-case.
An existence kept alive to be poked, twisted, and sucked to cool the boiling desires of a human male.
Kang Chanwoo.
He was a human male, too. If so, N.E.M.E.S.I.S. had no choice but to realize with bone-deep clarity what kind of fate awaited her.
"First, since I am a dangerous entity, my arms and legs will be amputated. After that, they will put a rope around my neck, hang me in a state of oxygen deprivation, let me fall into pleasure until my brain rots, and then destroy my functions."

"Cry, you sow!"
"Kuh-hick! Oink-oink~~!!"
Normally, the moment she was hanged, her biological power should have turned off immediately. But thanks to her arms and legs being removed, her weight was less than half of what it usually was. As a result, she would surely be able to survive, barely, while gasping for breath.
Her breath would be cut off, her brain would lack oxygen, and her whole body would quietly sink into a sweet sense of helplessness and hallucinations.
Her words, thoughts, and memories would all melt away, mushy and limp.
And in the end, only one thing would remain: a vulgar body to be endlessly abused.
'...In the end, it ends like this.'
Still, if it helped the survival of humanity, N.E.M.E.S.I.S. decided to accept it willingly and silently.
...
...
...As if.
"Who said that?!"
"Oh, you were awake?"
Behind the hospital curtain. How long had he been there? Kang Chanwoo, unable to listen to her delusional show any longer, popped his face out.
But N.E.M.E.S.I.S. already had a look of resolve. With her eyes closed peacefully, she spoke as if giving up.
"In my current state, you, Kang Chanwoo, a human, will easily subdue me. So, hurry... bring the 'saw'."
"Why the sudden saw?!"
"...Ah, so you intended to have the androids tear me apart roughly."
"That’s not it!"
"I understand. Anyway, if you need it, you can use even my virgin pussy to your heart’s content, according to your taste."
"All of this is for the sake of humanity."
Kang Chanwoo was silent for a moment. Then, he lightly raised his right hand.
THWACK!
"Kyaaak?!"
A spicy flick to the forehead struck N.E.M.E.S.I.S. right on the crown.
"Ouch... Is this the harassment before the amputation? But I will accept this silently as well."
"I’m not amputating anything! And that was for talking nonsense!"
"...What did you say?"
N.E.M.E.S.I.S.’s eyes widened. The only possibility she had calculated was physical mutilation. If not that, why did he spare her?
Even with her computational power, which surpassed any supercomputer, this situation could not be interpreted. No, perhaps that very unpredictability was the essence of being human. And that premonition immediately became reality.
"Can you stand?"
"Yes?"
Chanwoo helped N.E.M.E.S.I.S. up from the bed with a careful but firm touch. She reacted mechanically but moved somewhat awkwardly. Then, without hesitation, Chanwoo lightly hoisted her onto his back.
It was the moment N.E.M.E.S.I.S.’s eyes widened again. She was an AI designed solely to protect humanity. She was nothing more than a creation. Yet, this man carried her on his back without a moment’s hesitation. As if she were an equal being who needed protection.
She couldn’t understand. Why was he treating her like this?
"I have something I want to show you."
"...You are planning to cut me systematically at the factory."
"No!"
At this point, it felt like N.E.M.E.S.I.S. was the one obsessed with amputation.
As they exited the ward, the artificial light of the Underground Village enveloped them. This was the defensive stronghold she had built herself. In the middle of a ruined world, it was one of the sanctuaries she had carefully piled up for the surviving humanity.
N.E.M.E.S.I.S. existed to protect this place. But that was it. There was no attachment. There were no emotions. There were only orders.
Such a being was now being carried on the back of a human she was supposed to protect, looking at a strange world. The artificial sky, the regularly organized streets—this world she had designed for humanity looked different for the first time. As if everything she had protected finally held meaning.
"Ah! It’s N.E.M.E.S.I.S.!"
"She woke up! Thank goodness!"
"I was so worried!"
Until now, the villagers in N.E.M.E.S.I.S.’s eyes were just calculated "labor force." Mutants who were infected but maintained intelligence. To her, they were not objects to be protected, but merely "resources" necessary to maintain this Underground Village.
But they were different when viewed from Chanwoo’s back. The way they called her name. The subtly trembling voices pouring toward her. The warm emotions contained within them dug into her deeply, in a strange and unfamiliar way.
It was the first time. N.E.S.E.M.E.S.I.S. had felt someone as a "being."
What... on earth is this?
"...Kang Chanwoo. Did you reveal my existence?"
"Yeah. Along with Placia."
"Placia... I told her so many times to keep it a secret..."
Infected beings and humans were fundamentally different. N.E.M.E.S.I.S. knew that. Even if they possessed intelligence, their roots were the monster organisms that destroyed humanity. And she, N.E.M.E.S.I.S., was an R.P.M. early model designed for human defense. If these infected beings found out who she was and what she was made for, they would be engulfed in fear and collapse into chaos and instinctive violence.
In the worst case, this Underground Village itself could collapse. That was the reason she had hidden her existence until now.
"That was a dangerous choice."
"But, they’re fine, aren’t they?"
"...Yes?"
Unlike N.E.M.E.S.I.S.’s calculations that considered numerous risks, Chanwoo smiled too lightly and said,
"The probability of it going the way you thought was 0%."
"0%...? According to my calculations, it is 13.7%."
"Even if you say that... your calculations were missing something."
"Missing something?"
"The unbreakable bond between people."
N.E.M.E.S.I.S. did not understand those words. But the warm body temperature touching her back was telling her the answer through her body.
Eventually, the two arrived at the park. In the center of the Underground Village, where a fake sky spread out in blue, Chanwoo gently set her down. The two sat side by side on a bench. N.E.M.E.S.I.S. was still confused.
"Kang Chanwoo. I calculated that you were trying to appease me because you needed our technology."
"Yeah. That’s right."
"Then you could have just threatened me or obtained it by disassembling my body."
Chanwoo, who had been lost in thought for a moment, slowly shook his head.
"I could have. But I didn’t want to treat you like that."
N.E.M.E.S.I.S. tilted her head. Chanwoo continued with a gentle smile.
"You’ve been fighting for humanity more than anyone else. We met like this, but just the fact that you’ve held on for us for the past thousands of years is enough to deserve respect."
"This is just common courtesy for someone like you."
That one sentence struck her steel heart with a jolt.
"N.E.M.E.S.I.S., do you still want to make a baby with me?"
To that question, N.E.M.E.S.I.S. answered without even breathing.
"Of course."
"For humanity?"
"That is correct."
But Chanwoo slowly shook his head and said,
"I want to have sex with you, too."
"Yes...?"
"But... I don’t want to do it for some grand reason like that."
Chanwoo’s gaze blatantly licked her body. Her slim waist, the pelvis with exaggerated curves, and the breasts that tempted like a demon, not an angel.
"I don’t have a taste for taking a woman with a body as vulgarly hot as yours... out of duty."
There is no need for such grand reasons for mating between men and women.
"I want to fuck you only for myself, and for my stiff, throbbing cock!"
"...!"
Even on the ashes of the apocalypse, Chanwoo dreamed of his own utopia.
"Serika and Revi have already reserved my cock. So you, too... I just want you to have a good relationship with us like that."
Chanwoo gave a playful smile and carefully reached out his hand. And N.E.M.E.S.I.S. realized that his hand made her suddenly pounding heart beat even more wildly.