The Slime Takes the Body of the Part-Timer I've Been Watching……
Why is this person here…?

My head filled with nothing but questions as I tried to figure out why the part-timer who had just sold me cigarettes at the convenience store was standing at my front door. She was still in her store uniform, so she'd apparently come straight from her shift—but wait, how did she even know where I live?
Could she be a stalker?
Then again, there was no way a woman like this would be stalking me.
Creeeak—
I couldn't very well keep her waiting at the door, so I opened it.
"Uh, excuse me…?"
"……"
Even when I called out to her, the part-timer just stared at me silently, as if she couldn't hear a word I said.
A faintly unsettling look in her eyes.
"Did your payment not go through or something? Is that why you came looking for me?"
Honestly, that seemed like the most likely explanation. Maybe my card had failed and the purchase never went through. I pulled out my phone to check whether the payment had been processed.
‥It went through?
The notification on my phone showed a single pack of cigarettes charged to my account, plain as day.
Then why on earth was this part-timer—
I stuffed the phone back into my pocket and, easing my gaze back up to meet hers—
"Kyu."
"I'm… sorry?"
A surprise cute attack from the part-timer, out of nowhere. She stares at me without saying a single word, then suddenly goes kyu? What is this?
She always greeted people so brightly, and she was so pretty, that it never occurred to me—was she actually crazy? The thought made my head start to ache.
And then.
"Kyu… kyut, a, aah, mm, a, aah."
After her little kyu-kyuting, she started belting out ah— ah— over and over, like she was practicing how to make sounds.
"Mm, a, ah. Human vocal organs… difficult."
Human vocal organs…
A chill ran down my spine.
The moment things started feeling obviously wrong, that's when I absolutely should not have opened the door. But I'd let her in without thinking, just because of the part-timer's face.
I'd seen posts on hunter forums about dopplegänger-type monsters that mimic humans coming out of gates, but no way was one of those actually here—!
No, wait. The second a slime—a monster—showed up near my house, I should have realized this wasn't a safe zone at all.
"A, um, hey—"
"Heek…! Spare me! Please spare me!!"
With no powers of my own, all I could do was beg for my life.
And it made sense to. A pathetic Non-Awakened like me, with a monster like that right in front of me—running would just guarantee it caught me. Not that I could even run. I was a terrible sprinter.
I simply clung to the desperate, faint hope that maybe, just maybe, it would spare me. I begged again and again, groveling so pathetically I half expected to turn into a pile of dust on the spot.
I didn't want to die like this—I hadn't even had sex with a woman yet!
But the pretty monster in front of me showed no sign of granting mercy.
Swooo—
Her hand reached out, slowly, deliberately.
And then it came to rest on my shoulder.
"Uwaaagh!"
A scream tore out of me whether I wanted it to or not. And the instant I resigned myself to death—
"U-um. I-it's me, Master. Me, slime."
"Huh?"
The monster—no, the part-timer—was calling herself a slime in a halting, clumsy voice.
I slowly opened my eyes, which I'd squeezed shut, and stared at her all over again.
And the part-timer…

…seemed to be trying to reassure my terrified self, physically tugging the corners of her own mouth upward into a smile. Seeing her like that, the tension drained right out of me.
Thump—
"Haaah…"
"A-a-a-are you, are you okay?"
Worried about me as I crumpled to the floor, the part-timer flailed her hands about in helpless panic, stirring the empty air.
Once I'd calmed myself a little—
"You're… really that slime?"
"U-uh, y-yeah, yep, me, I'm, slime."
"The blue, cute little slime?"
Nod, nod.
"The slime that stole the cum I wiped up after jerking off?"
Nod, nod, nod.
Even when I tested her with a secret only the two of us could know, she nodded along without so much as a blink. It really was the slime I knew. If it hadn't been, I'd be getting sued for sexual harassment right about now.
"Okay, so you're definitely the slime, but… what the hell happened? Why do you have the body of the part-timer I know from the convenience store?"
Did slimes have some kind of dopplegänger ability? I'd never even heard of such a thing. Could our slime actually be some kind of mutant variant…?
"U-ah. W-well, um, that is."
The slime clearly had a lot to say but was still struggling to speak, stammering and cutting herself off again and again. She let out a long hnnngh— as she tried to figure out how to explain it to me, and I waited for her patiently.
"Take your time. I can wait."
"M-M-Master likes women. Wants to have s-sex, sex with human females, wants to mate."
Even knowing it was a slime, my body reacted to a woman that gorgeous going on about sex and mating.
"Slime, where on earth did you learn words like that?"
"Words inside this woman's head. T-they're, there."
You can read the mind of the human you've possessed too?
I thought you were just an adorable little slime, but you're actually fucking terrifying!!!
"Master's cum smells g-good, good and tastes d-delicious, but you won't give me any. Cheapskate."
The slime puffed out her cheeks. She used to do the same thing when she sulked back when she was still just a slime—slightly inflating her body. So she really was my slime, no doubt about it.
But jerking off for a slime is just kind of pathetic, isn't it…?
You could argue it's no different from jerking it and scattering it into the air, but blasting your load onto a monster just feels like… giving up on humanity. That's the vibe, anyway.
And so I listened attentively as the slime—clumsily, haltingly—went on explaining why she'd taken over the part-timer's body.
…So, to sum up:
Because I wouldn't give her my cum, she'd secretly clung to my body and tagged along when I went out for cigarettes, and now, in order to mate with me, she'd slipped into the body of the part-timer I seemed interested in and taken it over.
"That's what you're telling me right now?"
"Y-yep."
"Like hell it's fine…! Do you even understand what you've just done?!!"
I barked at her, all my exasperation boiling over at the sheer innocence of the slime. This degenerate freak of a slime had hijacked a human body just to mate with me—was trying to turn me into a rapist.
"What happened to this woman?! Don't tell me—she's not dead, is she?"
"She's not dead. I can put her back, p-put her back like before. No memories left behind either."
"O-oh. Well, that's a relief, but… still, it's wrong. What you did is just wrong."
"Why, wrong?"
"B-because…"
Because all of it is wrong. That's why.
But the slime just tilted her head, clearly unable to grasp what the problem could possibly be. Then—
Squish—
"Hup! B-boobs."
"Master likes a female's chest, r-right?"
"I-I mean, yes, but…!"
She'd taken my hand and pressed it against her chest, urging me to knead it to my heart's content—actually pushing her breasts out toward me.
Ah. My rational mind was about to short-circuit.
A woman's breasts, the first I'd ever touched in my life. And not just any woman's—to think I could hold these gorgeous, overflowing tits in one hand.
Even knowing what was inside this woman was a slime, my cock sprang rock hard, harder than it had ever been. My brain kept questioning whether this was really the right thing to do, but my hand simply could not refuse those breasts.
Not when an ordinary woman's grip strength could easily be shaken off if I just put my mind to it.
Knead, knead, knead—
And yet I kept kneading.
"U-uuun."
"Ah, sorry, did that hurt?"
"No, it felt s-so good it came out on its own. This female's chest is a superb erogenous zone."
Turned out the part-timer's chest, befitting its impressive size, was quite the sensitive erogenous zone.
Ah, no, this isn't right. If I gave in to the slime's seduction any further than this, I really felt like I was going to cross a line I could never come back from.
Time to summon the same willpower that had kept me from asking for a girl's number even while she was openly flirting with me.
Knead, knead—
One more squeeze, and I stop.
Knead, knead, knead—
F-for real this time, the last one.
Knead, knead, knead, knead—
This really is the last one………………
Chuuup.
"Mmph?!"
Just as I was going in for what was supposed to be the final grope, the slime suddenly smashed her lips against mine.
A kiss with this part-timer—the one I'd only ever fantasized about. Her plump lips pressed against mine with the softest, most delicate touch.
"Chuup. Churuu. Master's, Master's spit tastes good too."
"Slime, mmph, mmph…!"
As if to make sure I couldn't refuse, the slime ravenously devoured my mouth with the part-timer's body.
So this was my first deep kiss too, and… kissing is fucking incredible.
Mixing spit with a beautiful woman, tongues tangling in each other's mouths—the satisfaction is no joke. I could do this for the rest of my life.
When I briefly couldn't breathe and tapped her on the shoulder, only then did the slime pull back for a moment.
"Behh…"
Every time she did, a long white thread of thoroughly mixed saliva stretched between our lips. Of course, the breather lasted all of a second.
Before I knew it, the slime was at it again.
"Chururuuu. Churu. Churu-churu."
Sucking at my mouth like a woman possessed, doing her damnedest to swallow every last drop of saliva in it, her tongue violating me without mercy.
How long did that kissing go on?
"Hah… hah…"
Finally, as if somewhat satisfied, the slime stopped. Only then did I get to gulp down the breath I'd been holding and let it back out, gasping.
Truth be told, I'd told her this was wrong with my mouth only. I'd enjoyed the hell out of it myself. Thinking, when else am I ever going to kiss a woman like this, I'd kneaded her tits full-on and kissed her like an absolute madman.
I was so worked up I was leaking precum inside my boxers already.
But now, now it really had to stop. Any further and I genuinely wouldn't be able to hold myself back.
"Slime, it's time to—"
The moment I tried to tell her to give the part-timer's body back—
"Hah……"
…the slime began stripping off every piece of clothing she was wearing.
She tossed her top aside in an instant, and the part-timer's huge, heavy breasts were laid completely bare before my eyes.
Gulp.
A woman's bare tits—something I'd only ever seen in porn. The moment I laid eyes on those pert pink nipples and that flawlessly smooth skin, my reason began to fly out the window.
"Th-this female's body got s-super, super aroused."
"Slime…"
"L-let's mate."
And as if to prove that "super aroused" wasn't an exaggeration,

…the part-timer's pussy was already soaking wet, visible even through her panties.
I used to think a woman getting this drenched only happened in porn, but hey—what do I know anymore.
Flip—
"Ah, Master's cock. Your cock got s-super hard too? You want to mate with me and give me your cum?"
"…Yeah."
I decided I was done lying to myself. In one motion I shoved my pants and boxers down together and brought my rigid, throbbing cock to the pussy of the part-timer the slime had claimed. One slight thrust of my hips, and I'd be having the sex I'd dreamed about with the woman of my dreams.
Pressing my cock against her slit, poised on the very edge of sliding in—
Chup…♡
I wanted to bury myself inside her right that second, but I squeezed out every last shred of reason I had left.
"Can you tell this woman's name too?"
"This female's name. Ch-Chae Sia."
"Chae Sia…"
A name as pretty as her face.
"I'm Seojun. Kang Seojun."
"Kang Seojun. Yep, Master's name, I remember it."
I didn't exactly tell you to remember it, but sure. Either way—having sex with a woman whose name I didn't even know just felt too unfair to her.
Yeah, yeah, I know. Hunting down my last shred of conscience with my cock already pressed against her pussy probably looks pretty damn shameless.
But there was no way in hell I could stop now.
"I'm sorry, Ms. Sia…!"
And so, apologizing to Chae Sia, whose body the slime had devoured—
Schuwoop……♡
—I drove my rock-hard cock deep into her pussy.