The Ancient One's Bargain
The story the ancient plant told me sounded completely absurd. Unfortunately, every word of it was true. If you saw a blade being chewed and swallowed right in front of you, watched an artery get slashed open with blood pouring out in rivers, only for the wound to vanish without a trace in seconds, who wouldn’t believe it?
“...What the hell did that mean?”
The ancient plant’s words—that I would have no choice but to take their side sooner or later—had been stuck in the corner of my mind since earlier. It might have been nothing important, but for some reason it didn’t feel like something I could just brush off.
“..........”
It was already late. No matter how long I lay there thinking, no answers would come. Since we’d agreed to meet again tomorrow, I had no choice but to continue the conversation then.
I arrived at my studio apartment, a fifteen-minute walk from campus, and grabbed the doorknob.
...But in this state, there was no way I’d be able to sleep. I didn’t usually drink, but I decided to copy my dad—cracking open a can of beer when sleep wouldn’t come. I headed to the nearby convenience store to buy one.
“That’ll be 2,800 won. I’m sorry, but could I see your ID?”
“Ah, yes…”
I rummaged through my pocket and pulled out my resident registration card, issued less than a year ago, and showed it to him. It felt like just yesterday I was a clueless high schooler, yet now I was a full-fledged adult who had to carry his own weight. I still didn’t fully understand what was happening, but everything around me had changed completely.
The emptiness I once felt toward daily life had been filled to the point where it had become an unbearable weight.
I left the convenience store, popped open the beer can, took a sip, and tried to think coldly about what I’d heard earlier that day.
“Helping with reproduction… that’s what it meant, right?”
Sex with a woman I’d only just met earlier today. And that woman already had a boyfriend. But once I learned her true identity, that became such a trivial issue it wasn’t even worth worrying about.
A monster that devoured human brains and then wore the victim’s body like a suit. Having sex with something like that. On the outside she was an incredibly attractive woman, but the thought of sleeping with something that could take my life at any moment made me so tense I probably wouldn’t even be able to get it up.
I didn’t know. I’d just have to meet her tomorrow and talk. I’d refuse. I had to refuse. Was I really the only person in seven billion with Ancient Human DNA? I wanted no part of a situation where I had no idea what might happen next.
When I got home, I pressed the digital lock and pulled the handle. The moment I stepped inside, stripped off my clothes, and was about to head to the bathroom to wash up—
The bathroom doorknob came off with a sickening crunch, the sound of metal scraping against wood, and settled into my palm.
It was exactly like those scenes in superhero movies where the protagonist gains an impossible power and can’t control it. And then her words drifted through my mind.
“What the hell did you do to me…!”
The next day at lunch, I strode straight toward the thing laughing and chatting with friends in front of the lecture hall. No matter how you looked at it, it looked completely human.
“Hey. I need to talk to you.”
“Um… who are you?”
Her friends, now suspicious of me, stepped forward to protect her after seeing my urgent attitude.
“It’s fine, it’s okay. He’s my cousin.”
“Oh, really?”
“..........”
Cousin, huh. At least it was a good way to avoid suspicion for now. As she passed me, she flashed a sly smile and looked up at me.
We went back to the small clearing in the Old Dormitory where yesterday’s events had taken place. I cornered her and demanded answers.
“What the hell did you do to me?”
“Hehe… looks like it’s fully settled in now, huh?”
I hadn’t even told her about the changes happening to my body yet, but she spoke as if she already knew everything, teasing me with her tone and expression.
“I told you yesterday, didn’t I? One of my kind entered you too, Chan-woo. We grow by consuming the host’s brain cells. But ancient humans’ brain cells are a little… special.”
“What’s so special about them?”
“When we parasitize an ancient human male, the brain cells actually use us as nourishment to grow. And that nourishment is quite unique—it infinitely enhances the functions of the parasitized human’s brain. To put it simply, Chan-woo, you are no longer an ordinary human. You’ve evolved into something beyond current humanity.”
“..............”
I was starting to understand what she meant by saying I would have no choice but to side with them.
“Hehe, your head works fast after all. To modern humanity, we are terrifying invasive species. The kind that could drive mankind to extinction. But the same goes for you.”
She was right. If their true identities were ever revealed, even in the best case scenario I’d end up as a dissection specimen floating in a formalin jar.
“Damn it…”
“Ahaha, don’t look so depressed. It’s actually a good thing, you know.”
“What are you talking about?”
“Think positively. Doesn’t it mean you can do whatever you want with all the beautiful women around you now? The older sister next door, married women, celebrities you could never have approached before, and even me—who you’d never even met before—♡”
She subtly showed off her figure, trying to seduce me.
“Ahem! Can’t be helped. I’ll give you a little ‘taste’ as a demonstration.”
Apparently embarrassed by my lack of reaction to her attempt at seduction, she cleared her throat, blushed, and knelt down in front of me.
“Wait, what are you doing?”
“I told you. A taste♡”
She grabbed my pants and underwear together and pulled them down. It was the first time I’d felt the chill of early March air directly on my lower half.
“...It’s not getting hard.”
“...Of course it isn’t.”
Right in front of me, a cute girl I might have considered dating if I’d met her under normal circumstances was staring intently at my cock. Her sweet breath brushed against it, creating a ticklish, faint pleasure. But knowing what this woman really was, that tension suppressed any arousal.
“Hmm, I figured as much. Then…”
For a moment I thought she was giving up. But then she showed me another unbelievable sight.
“Ah…♡”
She opened her mouth normally and stuck out her tongue. But it didn’t stop there. She extended it to a length that was absolutely impossible for a normal human. The tongue, long enough to reach her own neck, dripped with saliva that was far more viscous and sticky than ordinary spit.
“Hehehe♡ Surprised?”
“...No. Less than yesterday.”
“That’s good♡ Then…”
Because her tongue was out, her pronunciation was slightly lisped. That tongue, like a living snake, slithered forward and wrapped around my cock.
“Ugh, ngh?!”
The pleasure I’d never felt before made my hips tremble. I wasn’t completely inexperienced with women, but the contrast between the cold air and the scorching heat of her soft tongue enveloping my entire length was overwhelming. The absurdly sticky saliva acted like lotion, dripping obscenely down my cock, along her tongue, and onto the corners of her mouth.
“Ahaha♡ It’s getting hard now♡”
“Kgh…”
She slightly loosened her tongue and, still speaking with that cute lisp, confirmed the state of my erection. Despite the inexplicable sense of humiliation I felt, my cock—having tasted pleasure it had never known before—stood throbbing, demanding more.
“Wow, the Ancient Human DNA really is on another level♡ It’s not even comparable to my boyfriend’s♡”
“Boyfriend?”
“Yes. I still have the memories of the ‘previous me,’ after all. The original owner of this body is quite pitiful. To think she lived her whole life satisfied with something like that…♡”
Once again, it hit me that the girl in front of me had once been an ordinary college student living a normal life.
“I’m getting a little wet too. Shall we continue…?♡”
She licked the head of my cock with her tongue in a teasing manner. After experiencing such impossible pleasure, the distinction between human and monster no longer mattered to me. All I could see was the ecstasy right in front of me.
I grabbed her head and shoved my cock straight down her throat along with that snake-like tongue in one brutal thrust.
“Ughuup?!…♡”
She looked startled for a moment at the sudden action, but that only lasted a second. Soon her eyes grew hazy as she looked up at me. The lewd gaze that begged me to keep going while tightening her throat around me drove me insane.
“Damn it…! Damn it!”
“Uup, kuhk♡!!”
I was violently fucking the throat of a woman I’d met only two days ago as if she were a cheap onahole. Even though her throat was being used so roughly she couldn’t even breathe, instead of suffering she looked aroused, her eyes dripping with sweet lust. One hand lifted her skirt while the other slipped into her panties, pleasuring herself.
Wet, sloppy sounds echoed from her throat like water sloshing in a bucket, while wet squelching noises came from between her legs.
“Damn it, I’m gonna cum—ngh!!”
The intense pleasure of her long tongue still coiled around my shaft even inside her throat pushed me over the edge. I poured thick, boiling semen deep into her gullet.
“....♡”
“Ugh, haa…!”
After what felt like an eternity, I finally pulled my cock out from the depths of her throat. My body, unable to handle the overwhelming pleasure, collapsed to the ground.
While I sat there catching my breath, completely drained, she was rolling my cum around inside her mouth with that long tongue, savoring it. The expression on her face was one of pure ecstasy, as if she were eating the most delicious thing in the world. Then she swallowed with an audible gulp, breaking the heavy silence.
“Ahaah♡ It’s so good…♡”
“...Good? That?”
“Yes! It really is the best… No exaggeration—this is the highest quality Ancient Human DNA in all our memories! I was unsure after just tasting your saliva, but I knew I had to try your semen…♡”
When the now-excited girl in a completely different sense tried to approach me, I stopped her with my hand. She was still evaluating the taste of my cum, changing the subject like any ordinary girl would… or so I thought.
Then I heard a rustle behind me. I whipped my head around in surprise.
“Ah, um… I’m sorry, I didn’t mean to watch…”
“Wait a second, you’re definitely…”
I remembered her. In the lecture hall… that’s right. Back when I was extremely tense because of this guy, she was the one who had worried about me. She was the president of our design department.
“Sorry, I’m so sorry!”
She bowed at a perfect ninety degrees in apology, then turned and ran. I tried to call out to stop her, but she was already too far away for my voice to reach.
This was bad. If she saw me with another man’s girlfriend like this… I thought for a moment, then realized my mistake.
The woman—no, the monster—next to me was probably in a far worse position than I was.
“...Oh dear. I wonder how much she saw from beginning to end…”
The innocent smile she had shown me was gone. In its place was an ice-cold expression I had never seen before as she stared at the department president who had already run far into the distance.
“W-wait! You’re not going to kill her, are you…!”
“Ah! Is that what you want? Do you like that female, Chan-woo?!”
She immediately flashed me a bright smile again and asked. What should I do? How should I answer?
“Yes! Don’t kill her. I like her!”
“.....Hahahahaha!”
I said it. No matter what, I had to stop this monster from massacring people.
“I wasn’t planning to kill her anyway.”
“What?”
“But this seems like a good opportunity to show you what we’re capable of…♡”
This incomprehensible monster spoke incomprehensible words while licking the semen still clinging to the corners of her mouth with that impossibly long tongue, smiling at me.