Vanilla on Her Tongue
"I'll show you how to suck the CEO's cock."
Secretary Kim said it while stroking him with one hand. Precum was already welling up from his urethra, slicking the shaft.
Ban Do-ah jerked back, eyes wide.
"What? I'm supposed to put that in my mouth? Why—why though?"
It was an innocent question, as if that were the strange part.
Secretary Kim turned to Han-seok. "Sir, you haven't gone below with Ms. Ban yet?"
"I have. Even finished inside her."
Secretary Kim turned back to Do-ah and said, perfectly matter-of-fact, "Just think of it simply. The CEO uses our mouths the way he'd use a toilet."
Do-ah could only stare, her face frozen in pure cultural shock.
Secretary Kim went on. "The experiment, after all, is about receiving the CEO's semen once he's taken the drug. If it ever goes to market, couples taking it aren't just going to finish inside every time. Some will do it orally. So we have to test every possible case, to make sure there are no adverse effects. That's all this is."
"...I suppose that's true."
Surprisingly, Do-ah actually seemed convinced.
"Now then. Let me demonstrate first."
Secretary Kim stroked Han-seok's cock a few times, pressed her tongue to the beading precum at his slit, then swirled it around the head. She took the tip into her mouth and began to move her head in slow, deliberate strokes, one hand working the shaft in rhythm as she sucked. Eyes closed, head swaying this way and that with an air of unhurried luxury, she looked like a connoisseur savoring the flavor of a fine wine. Then she demonstrated with her tongue as well—tracing the underside of his balls, dragging it slowly up the length of the shaft.
"Roughly like that. If at any point he seems ready to come, just let him finish wherever he wants. Would you like to try? I'll walk you through the details from right here."
She angled the cock she'd been holding toward Do-ah. Do-ah flinched.
"What? You said he already came inside you..."
"It's just... I've never seen one this close up."
Secretary Kim smiled. "Ah, I understand. It looks like that now, but once you're used to it, you'll find it almost cute. Now—open up and say 'ahh.'"
Do-ah stole a glance up at Han-seok. He was paying attention to nothing but the documents Secretary Kim had prepared. She slowly parted her lips. Secretary Kim took hold of the cock and guided the head into Do-ah's mouth. Eyes squeezed shut, whole body tensed, Do-ah clamped her lips around the tip. When nothing terrible happened, she let the tension drain from her shoulders and slowly opened her eyes.
Her boss flipped a page and asked, "The drama investment—did the funds transfer go through on their end?"
"Yes, sir. They've been sending us itemized statements of expenditures."
"Mm. Good."
Do-ah tried moving her head, slowly, back and forth. Secretary Kim coached her from the side. "Good. Just like that. Keep your teeth off it if you can—more of a light scrape, barely there. Now try tightening your lips a little. Perfect."
Sunlight streamed through the office windows. Do-ah was giving her first-ever blowjob—sucking off the CEO of the company she worked for, a man who'd been her father's high school classmate. Cock filling her mouth, she swallowed hard around it, and the EX74 in his precum went to work on her tongue. Suddenly, the act of sucking this man off didn't feel so strange at all.
Well, I'll be doing this all the time from now on anyway, won't I?
The moment that thought crossed her mind, she began moving her head with more conviction.
Han-seok turned another page. "Secretary Kim, go on out and handle your work. Thanks for the lesson."
"Yes, sir."
She rose, straightened her blouse and bra and buttoned her shirt, and left the office. Do-ah spit the cock out of her mouth.
"Phooeh."
It emerged glistening, drenched in her saliva.
Han-seok flipped yet another page. "You don't have anything else to do today anyway, Do-ah, so keep going a little longer." He said it in the same careless tone he'd use to dictate a memo. She answered nothing, only wrapped her hand around the thick shaft. Following Secretary Kim's demonstration, she ran her tongue along the urethra where the precum pooled, then took the head into her mouth. Sealing her lips tight around it, she sucked while her hand slid up and down the length in time with her mouth.
It was so thick her jaw ached, and yet, somehow, she found she wanted to keep sucking. Every bob of her head brought back the memory of how violently he'd pounded into her from behind, the sensation blooming warm between her legs as if she were feeling it again right now. Her mind went pleasantly blank as pleasure rolled through her in waves. If she just kept going, she thought, she could probably make him come. And that thought felt good.
Do-ah's head worked faster and faster with growing enthusiasm. The only sound in the office was the wet, rhythmic slurping of her mouth on his cock. She moved her head every which way, licked his balls of her own accord, teased and tasted just the tip with lazy flicks of her tongue. Before she knew it, the office floor around her was puddled with the saliva that had dripped from her lips as she serviced the enormous cock.
How do I make him come? Why isn't he coming? I want to make him come. Wait—then where am I supposed to take it? Don't tell me he's going to come in my mouth?
She was sucking away in a daze when Han-seok finally set down the last of the documents. "You're a natural. A few more times and you'll have it down."
The moment Do-ah registered that he'd been watching, a hot wave of shame crashed over her. She yanked the cock out of her mouth.
"Phooeh."
Only then did she see the mess she'd made—the pool of drool glistening on the floor from all her eager, thoughtless sucking.
I... why did I...
"Good work," Han-seok said. "Go rest for a bit, and when it's time, have lunch with the others." He pulled up his trousers and underwear.
"Yes, sir." Do-ah stood—then discovered, as she rose, that not only her panties but her jeans were soaked through.
"Keep a few spare outfits here at the office," Han-seok said. "You'll be changing often enough. Ask Secretary Kim to lend you a skirt today. Your waist sizes should be close enough."
"...Yes, sir."
With the crotch of her jeans dark with wetness, Do-ah's face was flushed so crimson she looked ready to die of embarrassment on the spot. She fled the office.
Han-seok settled onto the sofa and pressed the power button on the cleaning robot beside it. The machine—all arm, nothing resembling a human being—registered the puddle of saliva Do-ah had left on the floor. It trundled off to the bathroom, returned with a mop, and wiped it up. It had no expression and said nothing, but Han-seok could vaguely make out what it was thinking.
Haaah—these degenerate bastards. Honestly.
Han-seok had an engagement and went out for lunch. The women ordered delivery and ate together in the office.
"Seriously?" Kang A-jin's eyes went wide, a piece of gimbap halfway to her mouth.
Jang Eun-ha said earnestly, "Ms. Do-ah. Thanks to you, we'll be able to gather far more experimental data. Thanks to you, humanity takes another step forward."
"Human progress... you're laying it on thick," Do-ah mumbled, embarrassed.
"So has the EX74 experiment started, then?" A-jin asked. "Or are you still in the getting-comfortable-with-the-CEO phase?"
While Do-ah fidgeted, Secretary Kim answered for her. "The experiment hasn't begun yet. He's finished inside her, and she just started practicing oral on him a little while ago."
Jang Eun-ha chimed in. "Usually the experiment kicks off once you're able to take it in your mouth too. Ejaculation, that is."
Taking it in my mouth? Do-ah was still puzzling over the term when the ever-observant Secretary Kim clarified. "Receiving his semen orally."
"What? We have to do that too...? Don't tell me I have to swallow it?"
Secretary Kim nodded. "Sometimes he'll tell you to swallow, sometimes to spit. Or he'll have you keep holding it in your mouth while you keep sucking."
The color drained from Do-ah's face.
Kang A-jin waved her chopsticks airily. "Oh, it's nothing, unnie. After a few times you'll do all of it without thinking."
"How is it, being with the CEO?" Jang Eun-ha asked. "I know it's awkward the first time, but honestly—it feels good, doesn't it?"
"Well..."
Do-ah didn't deny it. The inside of her pussy was already coated with the love-gel that had reacted to Han-seok's cock, made from EX74-conditioned semen. She'd been all but finished—a purpose-built pussy that needed only one more direct dose of EX74 semen to unlock complete pleasure, engineered exclusively for him. Her mouth, too, had already reacted to his EX74-laced precum; it was half-tamed already. And so, naturally, her pussy grew wet at random hours, and she caught herself fantasizing about being violated by him.
Even that morning—she'd deliberately changed into a pair of shorts she never wore to work, hoping that having nothing pressing to do after clocking in wouldn't leave her sitting around thinking about her boss. But she hadn't been able to stop the desire creeping up on her, slow and insistent. Strangely enough, though, after sucking Han-seok's cock that morning, the feeling had eased somewhat.
Is this just how it works? Or is it because his face and body are exactly my type?
Kang A-jin said with a giggle, "Ah, I hope the CEO takes the EX74 and gets to do it with you soon, unnie."
"Wh-why?" Do-ah looked at her, puzzled.
Secretary Kim leaned in. "Because lately, since he's 'just' been with you, he's only been taking EX69—so the rest of us have been getting ordinary semen. Not supposed to tell you this in advance, but—" she dropped her voice to a whisper, "—semen on 74 feels so much better."
A-jin added, "Once you've had the 74 semen, unnie, you'll probably be the one begging the CEO for it."
"Me? That's insane. I'd never—" Do-ah started to say, and then the memory surfaced: herself in that office an hour ago, drooling on the floor, sucking his cock in a mindless trance.
I'd beg him for it?
Was the experimental drug... turning the semen into something like a narcotic? A potent aphrodisiac? An unshakable premonition told her that was exactly what it was. Coming from a boss who dangled BD over his female employees to propose these "experiments," it was entirely plausible. He was turning his staff into sex slaves with drug-laced semen. How revolting could a man get?
And yet, another thought crept in at the edge of her mind.
It could feel... even better than this?
For Do-ah, that was unimaginable. Even now, she said outright that her boss disgusted her—and honestly, it felt good. So good that keeping up the act was getting exhausting. But if it got better than this? Would she be able to keep pretending? Would she be able to withstand that kind of pleasure?
Maybe she should tell him now that she couldn't do it anymore. Or better yet, just quietly run.
Do-ah couldn't. She owed him too much.
He only let BD200 slip through for Dad—a man he sees as his mortal enemy—because of me, for my body.
Besides, loyalty was her entire nature—strip it away and there'd be nothing left of Ban Do-ah. If she'd promised to do something, she had to do it, or the unease would eat her alive.
Am I really going to go through with this? If I just sit here and do nothing, I'm going to end up as the CEO's sex slave, aren't I?
While her mind spiraled in circles, Jang Eun-ha set a small pill bottle on the table. It was the same one A-jin had used before.
"Keep this with you. Once you start receiving EX74 semen, there will be times you find yourself wanting him far too badly. When that happens, take one. They're candies."
"Times I want him too badly?"
Jang Eun-ha nodded.
Under the table, Do-ah crossed and squeezed her thighs together.
"May I try one now? I'm curious about the taste."
And also because I want him so badly right now I could scream—but that part I couldn't exactly say.
"Of course."
Do-ah fished a small candy out of the bottle and popped it into her mouth. The moment it touched her tongue, a sweet vanilla flavor bloomed.
Kang A-jin pouted. "Lucky you. Eating it now won't do much of anything, though."
That was how it was supposed to be. The candy only worked on a body developed by EX74, when it was made from the semen of the man who owned that body.
But Do-ah was already in exactly that state.
She marshaled every last shred of her self-control to keep it off her face, but an orgasm's worth of pleasure surged through her entire body. Her nipples stiffened to hard peaks, and it took everything she had not to slump and soak the chair with her own juices.
Why? He's only been taking EX69 these past few days. So did the others, just now.
Could it be... am I just that much of a slut? Or... have I already fallen for him? No. No, no, that's impossible. For him. That disgusting man.
"How is it?" Secretary Kim was watching her reaction closely.
Somehow, Do-ah felt the wave recede enough to bear. Flushed to the ears, she forced a lukewarm shrug.
"It's sweet. Tastes pretty good, I guess?"
Minutes ago she'd been twisting herself in knots over what to do—now, rolling the candy around her mouth, she made up her mind.
I'll try the EX74 semen—whatever it's called—and decide after that. It won't be too late by then. And if it's really too much, I'll just run. Simple as that.