Another Affair with a Married Woman in a Sexy Workout Outfit

After receiving Lee Dami's dirty selfie, I worked out harder than I had in a long time.

It was a day with nothing much else to do anyway, so I figured I'd thrash my body with exercise and pass out early.

Of course, my dojang didn't have nearly as many machines as a proper gym, but wrecking yourself was easy enough. A solid run on the treadmill alone would leave anyone wiped out before long.

"Hah… hah, hah…!"

Or so I thought. It turned out not to be that simple.

"Damn it, why won't I get tired?!"

I'd been using the point-purchased treadmill regularly, sure, but never hard enough under my old stamina standards for the effects to really register. Now that I'd set out to reduce myself to a wreck, though, I wasn't tiring at all — I could've practically tried out for a marathon.

And that was while running far faster than anything Ha Yuna could manage.

In the end I gave up mid-stride and stepped off the treadmill.

"This isn't going to work. If I keep pushing hard on this thing, I'll turn into an actual stamina monster. No more treadmill from now on."

Having good stamina wasn't a bad thing, but too much of it didn't seem ideal either. The insane efficiency of the point equipment had kept me glued to it for a while — and now that same insane efficiency was making me walk away from it.

I stopped using the treadmill and burned myself out with burpee tests instead. High-intensity interval training; nothing quite like it for punishing the body.

"Huuuh…! Hah… holy shit… how many sets did I just wreck… fuck… hah…"

Even that took a surprisingly long time. It was the kind of workout that should have left my whole body screaming after just a little — and still it dragged on. Somehow I managed to sweat through a solid session, then sat in the dojang ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠for a breather.

"Hoo, hah… I dropped the running, but this I still have to do."

I slipped the point-purchased Kegel trainer between my thighs.

Honestly, there had been days when I'd gotten so focused on dojang work that I'd slacked a little on training — but I'd never skipped the Kegels. The memory of Lee Dami moaning in admiration at how I'd kept my cock hard all night without flagging had done wonders for my self-esteem.

I hadn't even been using this thing back then, and she'd still been that impressed. Now I'd be able to get hard with even more confidence — with stamina that simply wouldn't quit.

And they said heavy Kegel work improved ejaculation control too. Essential training for all the members who wanted a dose of my "nutrient supplement."

Besides.

"Yena… hah…! Still hasn't hit her limit…!"

The gumiho Yena I'd seen during that ultra-realistic roleplay last time — I still couldn't even guess where her sexual stamina topped out. Sooner or later I'd be mixing it up with her for real, and if my cock gave out before she did, the shame would be unbearable.

Kegels were the one exercise I could overdo without worrying.

Of course, first things first.

"Manager-nim really… hah! Hah… knows how to get a guy going… hnn!"

I still had to make our manager happy — the one who'd sent me that selfie with her tits out.

Wednesday.

The first day since converting to a self-defense dojang that two proper sessions had been booked back-to-back. Morning: Lee Dami. Afternoon: Ha Yuna, sometime around three.

I'd gone to bed early the night before and was up at dawn, fully ready.

"She said morning, but I don't know exactly when. Might as well get there early and kill time."

I could have texted back and asked for a precise time, but an affair had a way of making a person paranoid. She'd probably bought a second phone to message me, and whether it was a burner or her regular one, even sending a reply felt risky.

So I just moved fast.

"By now… the cafe should be opening soon. Let's go."

If Dami was coming early, I figured it'd be around cafe opening time, so I left the house to match. And I stopped by the first-floor cafe before heading up to the dojang — partly to ask Narae if Dami had arrived, partly to grab an Americano on the way up.

Dami's car wasn't in the outer lot, though. So she probably wasn't here yet. I didn't bother peering carefully through the glass; I just opened the door.

— Ding-a-ling!

"Oh my?"

"Huh?"

Contrary to expectations, the person greeting me from behind the cafe counter wasn't Narae — it was Lee Dami.

Her deep-green hair hung loose as she stood with her arms folded in front of the POS terminal. She was wearing a shirt similar to the one from yesterday's selfie, and the memory of those huge breasts and stiff nipples from the photo flickered behind my eyes.

I stood frozen in the doorway, replaying it, until Dami's mouth curved into a long, knowing smile.

"Seonghyeon-ssi, you're early."

As she spoke, she shifted from behind the bar over toward the pickup counter, rested her arms on top of it, and propped her chin in one hand.

— Tap, tap.

Just like last time, she crooked a finger at me.

Answering the summons, I walked over to the pickup counter. I planted my arms on it the same way she had, leaned in a little, and brought my face level with hers.

Lee Dami's beautiful face right in front of me — those eyes drawn in languid curves, that straight nose, those red lips. Combined with her lovely scent, it set my heart pounding.

"I came early because I missed you, Dami-ssi. You only said morning, so I had no idea when you'd show."

"Heh heh. You could have just asked."

"Is it okay to reply? This whole thing's gotten me a little careful…"

"It's fine. So that's why you didn't answer? I had no idea — I was a little disappointed yesterday. I sent you something nice, and…"

As she spoke, Dami leaned her face in a little closer.

I did the same without thinking, the fact that we were at the pickup counter of an open cafe completely leaving my head.

— Chup…

For the briefest moment, Dami's moist lips pressed softly against mine.

"Haa… Seonghyeon-ssi didn't send me anything nice back. I was so sad."

A married woman's bird-kiss, eyes full of sex appeal as she breathed hot against me, set my body on fire. The way she playfully sulked — she'd sent a dirty selfie and I hadn't returned the favor — burned right through me.

My cock went rock hard.

"I'm sorry. From now on, whenever I get something nice, I'll make sure to repay it."

"You promise? I'll be waiting."

"Anytime."

"Heh heh… Oh, and save that number from yesterday. That's my number going forward — just for you and me, okay? ♡"

"Yes, ma'am. Saving it right now."

"Heh heh."

The bright smile Dami gave me in reply was genuinely lovely. Beautiful enough that it was hard to look away.

Lee Dami was a special woman to me.

Of course she was.

The first woman I'd ever had sex with. The only one I'd mixed bodies with without any help from the dojang system. A walking bundle of delicious taboo who got off on cheating behind her husband's back.

I'd tasted something similar while roleplaying with Jaemin and Yena, but that had been an artificial setup powered by the system. The affair with Dami was a hundred-percent real documentary.

Which meant I couldn't predict a single step of how things would unfold. Part of me was massively anxious because of that — and that was exactly why it was so thrilling, so arousing.

A situation that was pure fantasy in the real world: playing with fire alongside a beautiful, sultry married woman.

How could she not be special?

"Shall we ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠head up, then? I came all ready to work out."

"Let's. I'll give your training everything I've got, Dami-ssi."

"I'm counting on you. Oh — why'd you stop by the cafe, though?"

"I came to grab a coffee and check if you were here… and instead of Narae-ssi, I found you."

"Hmm~ Is that so? You hear that, Narae? Pour Seonghyeon-ssi an iced Americano, would you?"

"Hm?"

Dami turned her head as she spoke, and my eyes followed hers.

"Y-yes, yes yes, yes! I-I'll get it right away!"

There stood Narae-ssi — no idea when she'd arrived — both hands covering her face, though she was clearly peeking through her fingers at everything worth seeing. At the sound of her name she scrambled around behind Dami into the bar, face flushed scarlet, and planted herself in front of the coffee machine to pull an Americano.

Mm… Narae-ssi's cute too, no question. Maybe I should pitch her on the dojang one of these days.

Normally she chattered away bright as a puppy, but the moment she caught on to me and Dami, she turned pure and flustered like this. The reaction was delicious. It only made me more curious how she'd pant once she had a cock in her.

The thought kept me staring at Narae a second too long.

Which is why I didn't notice.

"Heeeung~?"

Dami watching me the whole time, mouth curved up, thoroughly entertained.

Americano in one hand, I went up to the dojang with Dami.

I unlocked the door, and the moment it was just the two of us in that wide-open space—

— Whump…!

"Chuuup… haahm… chup, chuuuk…!"

Dami threw herself at me.

She flung her bag to the floor, locked her arms around my neck, pressed her whole body flush against mine, and crushed her mouth to mine like she meant to devour me.

"Haa…! Nngh… slurp… chuuuk…♡"

Ten seconds earlier she'd been following me with elegant steps. Now she was all beast, panting hot breath as she hunted my lips and tongue. Her thick tongue coiled around mine, sticky with exchanged saliva.

I took the kiss, and with the hand that wasn't holding the Americano—

— Squeeze… knead!

—I groped her ass. Naturally, easily, savoring this secret tryst with a married woman.

At the same time a small question surfaced in my head.

If I mix bodies in the dojang with someone I've already gone all the way with… how does the system treat that?

The instant the thought formed, a hologram window appeared in front of me.

Got it.

If I started having sex right out of this kiss, it'd just be sex.

But if, for example, I told Dami, "I provide nutrient supplements to my members, you know. I'll give you some too~" and then shoved my cock in — even if the act was identical to sex, she'd process it as a pussy massage plus nutrient injection.

Okay. Flexible system acknowledged.

Logged and received.

With the system's help confirmed, I sank even more freely into the skinship with Dami — looking forward to the moment I'd bury my cock in this hot married woman's pussy, the one I'd tasted all night last time.

"Chuuup… haa… Seonghyeon-ssi… does kissing me turn you on? Your cock feels so hard…♡"

"I'm so turned on I could lose my mind. I've been losing it ever since I saw that selfie you sent yesterday."

"Heh heh… Did you jerk off to it?"

"Of course I did. Thinking about the sex we had."

"Chup… Me too… haa… I did too. After I sent you the picture… thinking about your thing…"

— Slide.

Dami eased her body back a fraction, dropped one arm, and groped my cock through my pants.

Even through the fabric, that careful, affectionate touch was electric. My body burned beyond endurance.

"This huge thing… Seonghyeon-ssi's cock, so much bigger than my husband's it isn't even comparable… remembering how it pounded my pussy… I touched myself thinking about that too…♡"

"Is that why your nipples were standing straight up when you took the picture? Thinking about my cock?"

"Heh heh heh… Not quite?"

"No?"

"My nipples… just get hard from thinking about you at all. ♡"

"……."

— Squeeeze…!

"Ahn… Our master is all worked up, isn't he?"

"Dami-ssi. I can't hold back anym—"

"Still not yet."

"What? Not yet?"

She'd given me a sticky kiss, stroked my cock with her hand, wound me all the way up — and the second I tried to fuck her right there, Dami shook her head no.

Her face was flushed, her eyes just as full of lust as mine, and still she refused. I stared back at her like I'd been hit with a stun lock.

"Eung… chup!"

Dami bumped her lips against mine in a cute little peck and smiled with her eyes.

"Would you wait in the office for a bit? I need to get ready."

"Ready…?"

"Ready. I'll wash up in the shower room and change into the workout clothes I brought."

"……."

"Looking at me with eyes that hot…♡ Really, you're dying to fuck me, aren't you? Don't worry. I want you to fuck me silly too. Just hold on a little… twenty minutes, tops. Okay?"

"……Yes. I'll wait."

"Good boy, our master."

— Chup!

One last kiss, and Dami collected the bag she'd brought and headed for the shower room.

"……."

I ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠barely restrained the urge to follow her in, strip her naked on the spot. If she'd just been here as a regular member, I would've steamrolled her — no need to wash, just pinned her down. But Dami had come under the pretext of exercise… well. Exercise was exercise, but it was obvious she'd come for sex-exercise with me.

She'd come for adulterous sex. I couldn't simply do whatever I wanted.

So I followed her instructions, like it or not.

"…I should change clothes too."

I switched into my dobok in the changing room. Being naked already felt a little much, and for getting stripped and fucking right away, a dobok was definitely more convenient.

Then I ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠sat in the office bouncing my leg, waiting for Dami.

"What kind of workout clothes did she even bring? Wasn't she just here to have sex with me? Maybe she packed them for the alibi."

I chewed on the small puzzle, using it to calm a head that was about to short-circuit from arousal.

And so thirty minutes crawled by — each one feeling like an hour. She'd gone ten minutes over. Past the twenty-minute mark, every minute felt like two hours.

Eventually that stretch of time ended.

"Seonghyeon-ssi? I'm all ready."

"……!! Yes!!"

The moment Dami's voice called from the dojang floor, I shot out of the chair and shoved the office door open.

And there—

After what had felt like an eternity of thirty minutes—

"I've never worn anything like this before… Does it look good on me?"

"……."

Lee Dami stood there.

Dressed like she was begging to be fucked.

Clearly similar to what I'd put on Yuna before — and yet giving off a completely different feeling.

Lee Dami, in tight leggings.