Chapter 1 — String — Panties

A psychologist once said that human emotions are like coins—though of one body, they often reveal a dual nature, two sides operating by different standards. Intense negativity sometimes masks deep affection. That was exactly how Sarah Na felt now.

No matter how fiercely she told herself this fling with the manager must end after just one time, a strange, rising thrill pulsed within her—a burning mark seared into her chest. What kind of punishment was this? She’d been bewildered more than once, caught between shame and craving.

Ever since that day—since she’d taken in the foreign presence of another man, a stranger, in ways no one else knew!

Ah… again! Even now, without warning, an odd, insistent pull tugged at her groin. Just brushing against the edge of the kitchen counter sent her spine twisting involuntarily.

Sarah Na knew precisely what this urge was—and who it belonged to.

At first, after that incident, whatever had changed inside her felt awkward, like wearing someone else’s clothes. But as days passed, it settled perfectly—like high-performance lingerie molded exactly to her body. So seamless, so right.

Each time she tried to quiet the hunger—through fingers or toys, grinding down on herself until she shuddered—the image of the manager’s thick cock only grew sharper in her mind, looming larger behind her eyelids.

Manager David Na received Sarah Na’s call moments after returning to his office from lunch.

Heh heh… I was just thinking about stopping by. Are we becoming an open secret now? Not that I care. Let’s keep devouring each other until we’re sick of it.

Though not one to chase women, there was something about Mrs. Na’s sensual aura that had drawn him in completely.

After telling the female clerk he’d be on patrol, David stepped out. The thought of walking bare-chested through the building in broad daylight made him grin.

Heh… today I’ll take her doggy-style on the couch. Gonna slap that cool, plump ass raw.

The afternoon apartment complex, carved into the hillside, lay mostly silent—only the occasional cry of a child breaking the stillness.

Ding! The elevator doors opened. But then, David faced a situation far from welcome.

“Oh! Isn’t that the manager? What brings you here?”

A woman in her mid-thirties, holding a bag of food waste, recognized him.

“Ah, hello! Just doing my rounds. People keep leaving junk in the emergency stairwell…”

David offered a half-truth, which sounded plausible enough as he nodded politely at the woman stepping into the elevator.

But then she looked him up and down with a coquettish gaze—and smiled suggestively.

“You work so hard… shouldn’t I treat you to coffee sometime? Do come by if you have time.”

For a moment, David wasn’t sure if she was genuinely flirting or just being polite. But the idea that a married woman would speak so freely about another man—even jokingly—irked him.

Damn… are all women in heat these days?

As expected, the front door wasn’t locked. Sarah Na had clearly anticipated his arrival.

“Welcome, Manager.”

She opened the inner door herself, greeting him warmly. But her outfit—revealing even for daytime—was stunning. She wore a black translucent slip, sheer enough that her nipples stood fully erect beneath.

Her reason for calling him? Nothing less than to douse the raging flames of her lust—with him as her firefighter.

David let his eyes drift downward.

“Good. Today I really wanted to peel off your string panties myself.”

“Ai! Just get in already. I’m desperate… don’t firefighters put out fires first?”

Before he could even finish removing his shoes, Sarah Na grabbed his hand and pulled him inside.

“Haha… damn. Can’t tell if I’m the one eating or being eaten.”

“What does it matter? Sex is about sharing, isn’t it?”

Pushing him onto the sofa, Sarah Na dropped to her knees between his legs. Her palm glided over the swollen tent in his pants.

“Just stay still. No skipping steps, no matter how urgent. You just need to strip from the waist down.”

Unbuckling his belt, unzipping his pants, gripping both waistband and underwear together, she peeled them down like shedding onion layers. David lifted his hips to help, and in seconds, his lower half was completely bare.

There it was—his cock, red and glistening, veins snaking thickly along its shaft. His pubic mound and scrotum were buried under a dense thicket of dark hair.

Sarah Na gasped.

“Ah… my god! The more I see, the more delicious it looks! Ahn! I just want to suck it—no thoughts, no hesitation!”

Mesmerized, she buried her face into his groin, tongue darting out to trace the rim of the head before opening wide—devouring him whole, driving him deep into her throat.

“Ugh!” David jolted as if electrocuted, grabbing her hair and slamming her face harder against him, bucking his hips upward like popcorn bursting.

“Ghk!” Sarah Na didn’t pull away—instead, she bit down gently with her teeth, grinding along the shaft, savoring the tremors radiating through her own thighs.

One hand reached down, rubbing the outer lips, then stiffening her middle finger and sliding it effortlessly into her soaked, gaping hole—plunging in and thrashing wildly.

Soon, her face and hips moved in separate rhythms—one sucking, one fucking—while David moaned, lost in the ecstasy of her oral mastery.

When she judged him sufficiently primed, Sarah Na pulled back, spitting his slick cock onto her palm, then looked up.

“Ah… Manager, what do you want to do now?”

“How about doggy style today?” David asked, gripping her waist to lift her.

“Ai… that’s your favorite, huh? Fine. I don’t usually go for it, but since I seduced you today, I’ll follow your lead. Let me get into position.”

Hardly finishing her sentence, she tossed aside the slip, now wearing only black mesh string panties. She placed both hands on the armrest, bent forward, arched her back, spread her legs slightly—and began swaying her hips side to side, inviting him in.

David stared at the narrow strip of black fabric barely covering the cleft of her ass. A groan escaped him.

“Ugh… yeah, your ass is worth a million bucks. No wonder these string panties suit you.”

Swallowing hard, he ran his palm over the firm, bouncy flesh—then hooked a finger under one side of the panty strap.

Then Sarah Na twisted her hips subtly—and the string panties slipped soundlessly down, fluttering to the floor like falling leaves.

She turned her head, eyes pleading.

“Ah… Manager, you’re not just going to shove it in, are you?”

“No way. Ignoring a view like this would be an insult to you. Now, push your ass higher, spread wider—let me see those ripe pomegranate seeds. Perfect. I’ll lick and suck you until you scream.”

Sarah Na obeyed, settling into an even more exposed pose.

“Ah… Manager, I’m soaked. I’ve come so many times I’ve lost count.”

“Stop wiggling! You’ll spill it all! I want to drink every drop!”

“Ahn! Don’t say things like that! It makes me even hotter!”

As if to prove it, David dropped to his knees, aligning his eyes with the vertical slit between her parted folds.

Slowly, he buried his face between her legs.

“Ahn! Manager, don’t! I’ll die! Ahhhhn!”

She screamed as if roaring. And why not? His oral skill was beyond shocking.

He gripped her ass cheeks tightly, used his fingers to pry open her inner walls—and pressed his long, wide tongue flat against her, bristled with tiny papillae, lapping from the very base all the way up to her puckered rosebud like a cat cleaning a bowl of milk.

For Sarah Na, who’d never felt anything like this, it was nothing short of apocalyptic—her senses collapsing, the world dissolving.

“Ugh… again? Damn… she’s gushing nonstop. Scary how much.”

His face was drenched in her hot, sticky fluids, yet he didn’t pull away—instead, he shoved his nose and mouth deep into her hole, drinking greedily like nectar.

Sarah Na’s limbs trembled, threatening to buckle. She wanted to kneel and beg him to stop—but the thought that this bliss might be heaven’s own pleasure kept her clinging on, determined to endure until the end.

Ah… can sex like this even exist in this world?

Convinced she’d never experience such ecstasy again, Sarah Na surrendered completely—no shame, no restraint—her body dancing to the rhythm of his tongue.

Eventually, David withdrew, stood up, and seized her narrow waist with both hands.

“Now I’m going in. Give me that tight squeeze again—chew me slowly, grind me deep.”

Eager for the sensation of her inner muscles clamping and rolling around him, he guided his cock to the center of her wet, quivering opening—furrowed his brow—

And yanked her hips toward him while driving forward, plunging in mercilessly.

“Aaah!”

“Ugh!”

Sarah Na arched like a fish impaled on a hook, burying her face into the sofa back. David roared as the tip of his cock struck something deep inside—thousands of nerve endings firing at once, as if serpents were gnawing his length.

But… but…

Unbeknownst to them, someone had been watching their depraved act—for how long, they couldn’t say—peering with flushed face and bated breath.

“Ah… so this is how it’s done! Ahn… I wish I could feel that too…”

It was her—the same woman who’d greeted David in the elevator. She’d just returned from tossing garbage and buying toilet paper at the convenience store downstairs.

What’s that noise?

Hearing unmistakable moans nearby, curiosity sparked. When she realized the sounds came from the next apartment, startled, she absentmindedly grasped the doorknob and twisted.

Click. The door wasn’t locked.

Maybe Sarah Na hadn’t had time to lock it after pulling David inside. Or maybe the inner door had been left open. Either way, in a supposedly soundproof apartment, muffled cries were bound to leak out.

She hid behind the translucent glass cabinet near the shoe rack, peeking out—only to freeze as blood rushed to her head.

Huh?! Who is that? The manager! My god… my god… I always say never trust people, but when did they start? Was it that fox-faced bitch who made the first move?

Shaking with shock and fury, her skin crawling with rage, she should’ve fled—but like someone risking life for a good show, she couldn’t tear her eyes away from the obscene scene: David’s face buried between Sarah Na’s ass cheeks, thrusting wildly.

David’s pumping showed no sign of slowing, hammering Sarah Na’s wide-open hole with relentless force.

Even the woman, though merely a voyeur, now had two fingers wildly fucking her own dripping core.

“Ah… what’s a lonely widow got to do? Damn, he’s pounding and twisting like a beast…”

Just then—Sarah Na shrieked, a scream like flesh tearing—followed seconds later by David’s guttural roar, like a lion’s roar.

At that climactic moment, the woman herself threw her legs apart and came violently, gushing uncontrollably.

Afterward, Sarah Na, glowing with satisfaction, walked in her slip to the front door to see David off. He noticed how her eyes—still damp—looked unexpectedly pure and girlish, and found it strangely attractive.

They exchanged a lingering look—words unnecessary—perhaps mindful of the neighbor.

But they’d been seen. Not in a compromising position, perhaps, but in a scene dramatic enough to spark rumors.

“Oh! Manager! What a coincidence—twice in one day. But, Mrs.… even if newlyweds, that outfit’s too revealing. It’s fine in front of your husband, but our manager might feel uncomfortable. Right, Manager?”

She glanced between them, smirking inwardly at their flustered expressions.

You damn fools. If you didn’t want to get caught, be more careful.

“W-well, yes…”

David stammered, caught off guard, reading the air between the two women.

But Sarah Na, as if knowing boldness was the best defense, suddenly straightened and shot back coolly.

“So what? I’ve covered everything a woman should. Unless I’m naked, what’s the problem? Manager, thanks for fixing the shower! You must be busy—go on ahead. Oh, Auntie… did you come out to give me those potatoes?”

“Go on, you two talk.”

Quick to shift the topic, Sarah Na’s sharp wit gave David the opening he needed—he bolted toward the emergency stairs instead of the elevator.

The woman silently cursed Sarah Na’s cleverness.

Hmph! That slut’s got him wrapped around her finger. What, the shower? Yeah, right. More like the manager’s dick fixed her showerhead.

“Hey, Auntie, you hungry? Come in. I’ll make you coffee.”

“What were you two so busy doing? Wrestling with the shower?”

“You must be starving… after getting fucked sideways like that. But how do I get back at her?”

She burned to challenge every word Sarah Na spoke.

For some time now, she’d dreamed of having David’s cock—craving to feel it chewed and rolled inside her. That Sarah Na had tasted it first made her a target of jealous rage.

Later, over coffee, the woman finally confronted her—blunt and provocative.

“So, do you walk around the house without panties?”

Sarah Na, cheerful and unrestrained, perched on the sofa with one leg tucked under her, leaning back deeply into the cushions.

Her short slip rode up, exposing nearly all of her pale thigh. When she crossed one leg over the other, one bare cheek flashed directly into the woman’s line of sight.

“Auntie… during your period, you obviously wear one.”

“So when the manager fixed your shower, you were dressed like this?”

Unaware the woman had witnessed everything, Sarah Na answered casually.

“Of course. Is that a crime?”

“Well… I wonder if he just enjoyed the view. A man with an extra appendage seeing a woman dressed so provocatively wouldn’t hesitate—he’d pounce, even if he’s heading to Samsubaksan tomorrow morning.”

Before she could finish, Sarah Na cut in with a sly smile.

“My, are you trying to break up a marriage? Wait—got it! You want to be taken, don’t you, Auntie?”

The woman had come to mock—but left feeling exposed.

“Mrs.! Do you think you can say whatever you want? How dare you—”

Outwardly furious, inwardly she admitted: This one’s not soft. The manager’s definitely bewitched by her. Can’t spread rumors now…

Judging by Sarah Na’s attitude, she’d love to expose them both—but that would force David to quit. Swallowing her pride, she stayed silent.

“Ai, Auntie… just teasing. Oh! Your coffee’s cold. Want a fresh cup?”

Disliking even Sarah Na’s warmth and charm, the woman finally blurted out what she’d been holding back.

“Never mind. It’s still warm. But tell me one thing… do brides these days ask their husbands to take them from behind right from the honeymoon?”

Instantly, Sarah Na pictured the rear-entry position she’d given David just an hour ago. The memory rippled through her, stabbing sharply between her legs.

“Ai! Auntie, how can you say that?”

“You seem uneasy… writhing your hips, lifting your ass.”

That bitch! After blushing so hard from the manager’s pounding, now she wants more?

Sarah Na uncrossed her legs abruptly.

“But, Auntie… why is your hand between your legs? Hey, wanna sit across from each other and jerk off together?” She spread her thighs wide—then shoved her hand deep into her wet cleft.

The woman jumped in shock.

“Oh my god! What kind of degenerate behavior is this? Are all young wives like this now? Or are their husbands’ dicks just inadequate? Ah! You’re making me aroused too! I’m leaving! Enjoy yourself! I’ll enjoy alone too!”

Without sparing her a glance, Sarah Na simply curled one finger deeper inside herself as the woman fled like a dog with its tail on fire.

“Ah… I must be crazy! Baby, what should I do? I’m going insane!”

Her hips swayed to the rhythm of her fingers—long, drawn-out moans spilling into every corner of the room.

Three days later, under the bright noon sun, Manager David Na received another call.

“Manager, my shower’s acting up too. Could you come by for a moment?”

Something in her low, insistent voice grated on him—but he couldn’t refuse. After lighting a cigarette, he pressed the doorbell with the resignation of a cow headed to slaughter.

Well… they say one is a mistress, two is a whore. Guess I’m learning the truth.

He sensed this summons wasn’t ordinary. Without fail—she’d decided to imitate Sarah Na. There she stood, wearing a black sheer slip, braless, pantyless, every curve on display.

“Oh, you came quickly! Please, sit on the sofa. I’ll make coffee.”

David couldn’t deny she was tempting—taller than Sarah Na, easily over 160cm, with a glamorous, full-bodied figure. Her breasts swelled like balloons; her ass, though slightly sagging, held a savory appeal. Only a hint of fat around her waist spoiled the perfection.

“Hope this suits your taste!”

She bent over to place two iced coffees on the table—her slip designed to expose half her breasts. David’s vision filled with the close-up sway of her heavy cleavage.

“Ahem… not sure where to look. Anyway, I should check the shower first. Ah—Ma’am!”

His words died in his throat.

She’d lunged at him—grabbing his cock through his pants, pressing against his groin. Looking up, her face flushed with urgency and defiance, she spoke sharply.

“It’s right here! Don’t say a word—I saw everything. I watched you take the other wife from behind. Comparing her hole to mine won’t hurt—men crave variety, don’t they? You can refuse, but if news spreads… well, that’s out of my hands. Consider your silence consent. Now… let me see your cock.”

Was David terrified? Numb? Resigned? Or thinking this might be an interesting experience?

Or perhaps he’d long desired to taste a mature woman’s flesh—and now, presented with the chance, playing victim was the smarter move?

He simply stared down, motionless, as she swiftly stripped his lower half bare.

No… if rumors start, I’ll lose my job.

“I’ve lived alone, no husband—my side’s been empty for years. I’ve admired you… not just emotionally. Ah! Already like this? I wanted to tease you… ah! Such an impressive tool. Mrs., I’ll suck you like a leech—just take off your top.”

“Ugh!” David stroked himself a few times—up and down—then, as if possessed, she opened wide and swallowed him whole, making him buck his hips and gasp sharply.

Her oral technique was relentless—clinging, sucking as if to rip his cock from its roots. Compared to Sarah Na, she was superior—her grip tighter, her persistence unmatched.

When she nibbled the tip, shaft, and scrotum with her teeth, grinding slowly, waves of euphoria melted every nerve in his body.

“Ah… Manager, today I want to ride you in my favorite position. Is that okay?”

After spitting his cock onto her palm, she looked at him as if seeking agreement. David, hearing “today,” wondered if “tomorrow” might also mean “today”—briefly imagining a rotating schedule with three women.

Guess I’ll need to ask my wife for stamina tonics.

When he nodded, she quickly stood him up.

“Lie flat on the carpet, please?”

Polite to the end, she tore off her slip—then mounted him, feet planted on either side, settling into the classic cowgirl pose. She gripped his cock, already throbbing and red-hot, guided it to her soaked entrance—and lowered herself, swallowing him whole with a straight back.

“Ugh! What the hell? Why is it so tight? Ugh… gonna snap!”

“Ahn! This is how my hole is! You don’t dislike tight, do you? Ahn, Manager, too much! Feels like my walls are tearing! Ah, so full… so tight! Don’t thrust yet! I need to adjust… ugh! Every inch of me’s trembling! S-Stop! Now… let’s begin!”

Today, David learned that women’s vaginas varied wildly—not just in size or shape, but in how they contracted, expanded, moved. Chemistry wasn’t a myth. And men—no matter how loyal—could never escape the chains of desire for another man’s woman.

“Oh! Manager, aren’t you visiting our hallway a lot lately?”

Sarah Na spotted him smoking outside the building—returning from early shopping with friends during a department store sale.

“Been shopping, huh? Uh…” He almost slipped into casual speech, catching himself.

“Were you waiting for me?”

Sarah Na gave him a sultry look—as if ready to jump him the moment he nodded.

“Heh… guess you’re popular with the ladies.”

“What? Popular?” Sarah Na frowned.

“Ah, nothing… just saying. Well, then…”

Trying to brush it off, David turned to leave.

But Sarah Na shot one last barb.

“Close the main gate before you leave. If someone snatches you, I’ll be the only one wronged.”

He wished for a mouse hole to vanish into.

“Heh… careless bastard.”

Standing at the elevator, Sarah Na suddenly paused, a thought striking her.

Popular with the ladies? Another woman besides me? Could it be… the auntie next door? Nah… impossible. Then again… so what? Sharing isn’t so bad.

Perhaps, in this world, men live blind.