Secretary Kim Becomes a Semen Receptacle / Jang Eun-ha's Approval
"What do you think?"
Han-seok asked, perching himself on the edge of the lab desk.
"What is this?"
Jang Eun-ha looked around the laboratory, examining unfamiliar pieces of equipment from every angle. The analytical, coldly impassive expression he'd noticed when they first met was nowhere to be found—in its place was the face of a child brimming with curiosity.
"You put a compound in there, and the AI on this PC analyzes what effects you can expect from it."
"How long does it take? For results."
"Hmm. About five minutes?"
"Wow. Really? That fast?"
"Yes."
"Ah, right. I suppose multiple researchers will be sharing it in rotation, so I shouldn't think of the five minutes as the total wait time."
"Huh? I told you when we met in the States—this entire 19th floor is your personal laboratory, Ms. Jang Eun-ha."
For a moment, Jang Eun-ha's pupils dilated.
"I'm sorry, what?"
"The clean room out there and the pharmaceutical production room I showed you earlier—all of it is for your exclusive use. This is the office where you'll conduct your research with the AI's help. Ah, I'll be using it occasionally myself."
Jang Eun-ha pressed a hand to her forehead, visibly flustered.
"I'm not sure I qualify for something like this."
She fidgeted helplessly, like someone who'd been gifted dozens of top-tier luxury items at an exclusive boutique and had no idea what to do with them all.
"Then would you like to have your qualifications evaluated?"
"Excuse me?"
Han-seok switched on the equipment she'd been marveling at.
"As it happens, there's a drug on the 18th floor that's nearly finished in development."
English text and a cascade of chemical symbols scrolled across the monitor.
"This is the analysis of that drug. Take a look, and tell me—what is it, what part is incomplete, and how would you fix it? Think you can do that?"
It was an abrupt test that could easily have rubbed someone the wrong way.
But to Jang Eun-ha, it was nothing more than a fresh puzzle to stoke her curiosity. She shrugged off her padding, sat down, and began reading through the contents on the monitor. Han-seok stood beside her with his arms crossed, watching her with a look of keen interest.
Wow. Those tits are enormous. And that's just the outline through a checkered shirt. What would they actually look like?
After about ten minutes of reading the AI-generated report, Jang Eun-ha spoke.
"Um... I'm not quite sure how to put this."
"Oh?"
"To put it simply, I can tell you're a genius, sir."
"I'd appreciate a little more elaboration, one piece at a time."
"First, what the drug is. At its core, this is a contraceptive—but the drug undergoes a secondary transformation through the user's semen. You've built the framework, but the most crucial component is missing. That said, given the factors present that could influence the pleasure centers of the brain, my guess is that you're aiming for a contraceptive that also arouses pleasure in the user's partner upon ejaculation—that is, upon the release of semen. Through contact with it, or ingestion? Or would we call it something else. Insemination would fall under that too, of course. So it appears to be a drug designed to make a partner feel pleasure through those pathways."
"Mm. Anything else?"
"As for the missing core component—I suspect you deliberately left it out for security reasons, sir. You don't trust the staff on the 18th floor. And as for how to fix it..."
Instead of answering, Jang Eun-ha simply blinked and looked at Lee Han-seok. As if to say: Your turn. Take my test. Answer me.
Han-seok spoke.
"How to fix it is in your doctoral dissertation, Ms. Jang Eun-ha. The Development of Pleasure-Center Suppression Drugs and Their Effects: Focusing on Clinical Trials with Convicts. You synthesize the anti-version of that drug and compound it into this one."
"That's exactly what shocked me. At a glance, it looks like an incomplete, amateurish chemical formula—but this... you designed it from the very beginning with the synthesis of the reverse version of my drug in mind."
The two of them marveled at each other in equal measure. Han-seok's lips were the first to curl upward.
"This is fun."
"Yes. It is fun. Ah—please feel free to speak casually with me."
It seemed Jang Eun-ha had opened up, just a little.
"Right. I will. So what do you think? Of this drug."
It would have been perfectly reasonable to call him a pervert for it.
"It's fascinating. Let's make it right away."
"Really? You're okay with it?"
"Yes. Completely."
"Which part? Couldn't it be weaponized for criminal use?"
"What? But... it's exciting, isn't it? Creating something that doesn't exist in the world yet."
Han-seok nodded.
"How long would it take, to make it?"
"A week? I think that would do it. Could be faster, even. It's practically finished already, given your groundwork. It'll really come down to how quickly I get comfortable with the equipment here."
"Then starting tomorrow, come to work and begin development."
"CEO-nim?"
Jang Eun-ha addressed him by his title now.
"Yes?"
"Please count my pay starting from tomorrow's shift. Could I just stay here a little while today and get hands-on with things before I leave? There's equipment I'm not familiar with yet."
"Stay as long as you like. Consider your hiring effective today."
"Understood, sir."
"I have some business to attend to, so I'll head upstairs. From now on, just use this card for access."
"Yes, sir."
Han-seok left Jang Eun-ha in the laboratory and headed for his office.
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"Secretary Kim?"
When Han-seok returned to the office, Secretary Kim was nowhere in sight.
She couldn't have gone home.
He stepped into his private office at the back. Secretary Kim was lying face-down and naked on the bed. With one hand, she was holding the plug that sealed her lower hole in place, keeping it from slipping out.
"Ah. There you are, Secretary Kim."
"Boss... I know this must look strange, but there's a reason I'm lying like this."
Han-seok peeled off his clothes one by one, revealing his muscled physique.
"Go on. Tell me. I'm curious."
"I came up to the office and tried to sit in my chair, but the handle of this plug made sitting a little uncomfortable. So I came over here to the bed and lay face-down. And then it occurred to me—wait, I'm going to be waiting on this bed with my pussy stuffed full of your cum anyway. And when you come in and see me like this, you'll want to fuck me. So I figured I might as well take my clothes off and stay face-down."
"A perfectly reasonable explanation. And here I thought you were just in heat again."
Now naked, Han-seok approached the bed and gave his cock a few idle strokes. Secretary Kim crawled toward him on the mattress and stuck out her tongue. Han-seok rubbed the head of his cock against it as he spoke.
"After talking with Jang Eun-ha, it looks like the drug will be ready within a week or so."
Secretary Kim took the head into her mouth and nodded up at him with those big eyes of hers.
"Was that nod an acknowledgment, or just you mouthing my cock?"
"Puheh. Both."
With that, she took the head back into her mouth and began bobbing her head again.
"Anyway, I'd love to tell you about the drug too, but I can't—not if we want accurate test data. Say the drug makes your breasts grow when I come inside your pussy. If I told you beforehand, you might look in the mirror afterward and convince yourself they'd gotten bigger when they hadn't."
Secretary Kim gripped the thick shaft of his cock and licked the underside of the head as she replied.
"Understood, sir. But just for the record, I'd rather my breasts didn't get any bigger. I think they're exactly the right size."
"I agree. A chest with a perfect feel to it—sucking on those nipples is a first-rate experience. Sometimes at work I catch a glimpse and have to fight the urge to strip you down and squeeze them with both hands right then and there."
"I've always been satisfied just knowing they look good in clothes. Hearing you say that, now I know exactly how you think about me every day."
"Right. How you look in clothes. That too. Anyway, there's only a week left, so for the next few days, expect to be fucked morning, noon, and night. Push aside all your secretarial work except the critical stuff."
Secretary Kim stroked his cock with her hand as she answered.
"Yesss? But with my mouth, my chest, and my pussy all like this—haven't I already prepared plenty to receive your semen?"
"Isn't there one hole you've left out?"
"Ah. Surely not."
"There are couples who fuck that way. Naturally, it needs clinical research too. Getting comfortable back there takes more than a week. But I won't be testing you back there right away, so no need to rush."
"But the back... isn't that a waste-removal organ, sir?"
Han-seok placed his hand on Secretary Kim's glossy black hair. She reflexively took his cock into her mouth. His thick hand pressed down on her small head.
"Mmph—ulp."
A mouthful of cock pushed its way in.
"Just a little more. Hold on."
"Ulp. Ulp."
"Good. Wrap that throat around it. Stay like that for a moment."
"Ulp..."
Secretary Kim endured it, drool dripping steadily from the lips sealed around his cock.
"Secretary Kim. These past few weeks, I've been training your mouth and your tits just like your pussy—developing them to wring out my semen. So we'll just develop your ass for pussy duty too. Your entire body is being developed to receive my cum, Secretary Kim. And once that's done, you can go around telling everyone you're my exclusive female—my very own semen receptacle."
Han-seok released the hand that had been pressing her head down.
"Puhaa—haah. Haah. Who would go around saying that? Haah."
Secretary Kim let her thick saliva dribble onto the bed.
"See that? After just these past few days, your throat is already being trained like a pussy. Your ass will get there soon enough. I'll train you so it doesn't hurt, so don't be too scared."
"Boss, haah. Haah. Do you have a pen?"
"Hm? A pen? Out of nowhere?"
"That phrase—semen receptacle—is such a good expression. I want to jot it down somewhere so I don't forget it. Because if I say, 'Please cum for your semen receptacle' right before you're about to finish, you'll come faster, won't you?"
"You know me well already. Hm. Would a marker do?"
A marker pen sat on the nightstand beside the bed.
"Yes. Then first..."
Taking the marker, Secretary Kim started to write on her own body but faltered, unsure where to put it.
"I'll do it for you."
Han-seok took the marker, grabbed one of her breasts, and wrote on the upper slope of each: [Boss's Exclusive] and [Semen Receptacle].
"How's that?"
Secretary Kim nodded.
"Yes. Now I can copy it into my notepad later without forgetting. But, Boss?"
"Hm?"
"How long am I supposed to keep this thing plugging my hole?"
Secretary Kim had been holding her crotch shut with her left hand the whole time.
"Surely it won't fall out even if you let go?"
"It will, sir..."
"My Secretary Kim's hole isn't that loose, is it? If anything, it grips me tight."
"Hnngh. But you came a whole load inside me, sir. And I've been waiting here naked this whole time... and then you came in and took your clothes off, so..."
"Ah. So now you're saying you're like Pavlov's dog—one look at my cock and your pussy starts flooding, and the plug's about to slip out?"
"I mean... it's true, but I'd like to deny it."
"In any case—you want me to pull it out quick so you can get fucked like a dog, is that it? So you can try out the words 'semen receptacle' for yourself."
"No, really. I was just curious when you'd take it out."
"Turn around."
Secretary Kim turned her body, presenting her ass toward Han-seok.
"I'll pull it out, so squeeze as hard as you can. Don't let a drop of cum out."
"Y-you're not putting it in right away, are you?"
"Hold on just a bit."
"I can't hold out long."
Han-seok slowly withdrew the plug that had been sealing her pussy. Before the hole could clench shut again, there was a brief glimpse of the white semen packed full inside.
"Good girl."
Han-seok pressed the drenched plug against her tightly closed asshole.
"W-wait a second. You're actually going to put it in?"
"Secretary Kim. It's work."
"Hiiiing..."
"Good girl."
He worked the plug into her ass, twisting it slowly.
"Nnngh... it feels strange."
"Pretty."
The plug sat snug and pretty above her pussy hole.
"Now—clench that pussy as tight as you can."
Han-seok slid his hand between the legs of the prone Secretary Kim and lifted her clean off the bed. Her breasts swayed with a springy bounce.
"Nnngh..."
Suspended in his arms, Secretary Kim found herself facing him with her legs spread wide open.
"B-Boss... it's coming out..."
Han-seok carried her over to the full-length mirror beside the bed.