To My Friend's Wife Who Came for a Self-Defense Lesson...

After enjoying a morning romp that left his body humming with energy at Yuna's place first thing that morning, Seonghyeon was on his way to the gym.

"Out-of-gym lessons… this app is completely broken."

He couldn't help but thrill at how absurdly overpowered the Out-of-gym Lesson app really was.

The work itself was no different from what he did at the gym — but being able to freely play with a member's body inside her own home? That was something else entirely.

Emotionally speaking, screwing someone at the gym and screwing them in their own bed simply weren't the same thing.

Just now, Yuna had been lying on her own bed with her legs spread, begging, Oppa, put your cock in me… — and God, had that been hot.

"Well, hearing that at the gym is pretty fucking hot too."

Anyway.

After trying it once, he'd made up his mind.

He was going to burn this the second the cooldown came off, every single time.

A two-hundred-forty-hour cooldown was far too precious to leave sitting idle.

"If I can use it on someone else, I will. And if nothing else comes up, I'll just use it on Yuna."

Having a cute little sister who adored his massages living one floor up in the same building really was a stroke of luck.

On days like today, he could clean her place as a big brother while he was at it — a win-win for both of them…

Bzzzt.

"Who's texting me this early… ah."

So it was Cheon Dohwa. Must have sent it on her way to work.

Even over text, the politeness that had taken over her speech ever since the massage came through loud and clear.

Compared to how she'd started out, watching her come at him so submissively was pretty entertaining.

"No… as I told you last time… I'm fully booked through next Friday… Send. I'm not touching you before that day, so give it up. I'll string you along until you're desperate, then blow you wide open."

He sent the reply and headed up to the gym.

Then he spent a few hours setting up the massage bed and self-defense gear that had arrived yesterday, and waited.

"Seonghyeon-ah~ I'm here."

"Hey. It's hot outsi— wait, what is all this stuff? Are you my mom?"

"Hehehe. I packed nothing but your favorites, so get excited!"

The wife of his closest friend, Jaemin.

A close friend of his in her own right.

And the owner of a pussy that was a match made in heaven for his cock.

Lee Yena arrived at the gym loaded down with bags of side dishes, wearing that same bright, gentle smile she always did.

And then—

Last time it had thrown him off.

This time, he was almost glad to see it.

The Surprise Quest, right on cue.

"The beach? I'm down. But before we go, I think I need to finish every last one of these side dishes you brought today. How am I supposed to get through all of this?"

"You'll polish them off in no time~ Oh, by the way — how are things going with that woman member? Any progress?"

"We've been texting. Not sure if I'd call it progress, exactly… though she is the one who always messages first."

"Really? If she's the one reaching out first, that's a lock. Absolute lock!"

"I'm taking your word for it… I wait for Saturday every single day."

"Hehehehe… I hope it works out. And if it does, she's coming to the beach with us. Got it?"

"Well, if she's cool with it, sure. Works for me."

They stepped into the office to stash the side dishes Yena had brought in the gym fridge, and chatted for a bit.

The Surprise Quest's time limit meant he couldn't afford to linger forever, but with a generous window to work with, a few minutes of small talk was fine.

Remembering Yena from last time, getting her off ten times didn't seem like it would be hard at all.

Even if he couldn't use his cock today.

While they talked, he checked the information on Yena he'd pulled up on the monitor.

Her satisfaction had climbed a little since last time, and her Physical Arousal was already sky-high — and he hadn't even laid a finger on her yet.

"The gym is so nice and cool~ I might just start coming every day."

"Hey now. Trying to save on your AC bill at home?"

"Caught me? It's already hot even in June, and I'd love to run the air, but I'm home alone during the day so I feel bad about the electricity."

"That so? Then you're welcome to come cool off every day. Want a part-time job at the front desk?"

"Hehe, really? You'd hire me?"

Right there in front of him, that pure, playfully smiling face was flawlessly concealing a raging sexual hunger underneath.

Honestly.

As a friend, he was deeply concerned.

Concerned whether making her cum a mere ten times would even be enough to properly unwind that body of hers.

Last time they'd gone at it that hard, and her Physical Arousal had still been riding high all the way until she went home.

I'd better give it everything I've got. In place of overworked Jaemin.

These days, the first thing that popped into his head whenever he looked at Yena wasn't guilt or apology — it was how he could savor her even more deliciously next time.

The space where remorse and shame should have been ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠had been completely taken over by the thrill of the taboo.

"Let's see… shall we get started?"

"Mm~ Looking forward to it, Director."

"Yes, yes, right this way, ma'am."

He wasn't going to strip her just yet, so he swallowed down the desire boiling up inside him and led Yena out of the office.

Then he showed her the self-defense gear he'd ordered online in advance.

"Hm? These look just like the ones Jaemin bought me."

"I only ordered the same stuff, or close enough. Jaemin asked me about all of it before he bought any of it."

"Oh, I see~ So we practice with these? Isn't the spray dangerous?"

"Obviously I emptied it and filled it with water first. Don't worry."

Originally he'd planned to start by having her change clothes so he could admire her figure — but with the Surprise Quest demanding he work off Yena's sexual frustration, he decided to wrap up the self-defense lesson quickly first.

Besides, training on everyday tools for dealing with molesters was more natural in regular clothes anyway.

"First things first, Yena. Jaemin bought you a collapsible baton and a whole pile of other stuff, right?"

"Tell me about it~ He's such a worrywart…"

"The worrying makes sense — but other than the spray and the alarm, I want you to pretend the rest of it doesn't exist."

"Just those two? Why?"

"Even if I put a baton in your hand, you couldn't hit someone with it. And even if you did, it wouldn't hurt. So anything designed to actually injure someone is off the table."

"Hehehe. That's so you, Seonghyeon. You really know me."

"Jaemin knows all that too — he just bought everything because he was worried. So as long as it's not too heavy, just carry it around and put his mind at ease."

"Okay, I will!"

"But you do know you need to be able to use the spray, right? Technically it is something that harms people, but it's the easiest to use and the most effective."

"It's just like a spicy liquid coming out, so that one's fine."

"Okay. Then today's lesson is going to center on this."

"Yes, Director!"

Yena answered with a smile that said she was looking forward to it, and he pressed a self-defense spray into her hand.

It was compact enough to nestle into Yena's small palm — a lipstick-style canister.

"Jaemin must have done his research, because he picked a good one. Easy to carry, and you can fire the second you pop the cap. Perfect for you."

"Mm-hm, I noticed. We tried it on the kitchen sink as a test. Super simple."

"Right? Okay, watch. First — if you haven't been grabbed yet, and some creep is coming at you openly in a secluded spot, the alarm takes priority over the spray. Here's how you do it…"

He stood facing Yena and started the lesson.

Whatever else you could say, the alarm and the self-defense spray were the two things women really ought to carry.

In this day and age, gender hostility ran deep, and sure, there were women who used being women to do ugly things.

But the fact remained that there would always be bastards looking to hurt women — and pretty women like Yena were relatively more exposed to that risk.

Plus both tools were small enough to toss in a handbag without a second thought.

Sidling… sidling…

"Someone creeping up on you like this…"

"Pfft… pfhahahahaha…"

"Ma'am. Laughing during class? Really?"

"Sorry… heheh… Seonghyeon, do you know how shady you look right now? Who actually walks up to someone like that~"

"I'm demonstrating it clearly so you'll understand. Stop laughing and watch."

"Yeees."

"Normally, even if some sleazy guy is drifting past you, it's not easy to tell whether he's a molester or just someone walking by. Most of the time it'll just be someone walking by. But if you're sure about it, you need to respond aggressively even if it means apologizing later. Especially if you're somewhere deserted and he's trying to close the distance like this…"

"Yes… pfft…"

"Yena-ssi?"

"I'm sorry, Direc— heheheh…"

Watching him throw himself into the molester role with every gesture and step, Yena kept bursting into laughter.

A naughty student snickering at her Director's full-commitment performance — but no one on earth could have gotten angry at Lee Yena for it.

Because the way she laughed, soft and small, was simply too lovely.

Yena was dressed in three-quarter pants and a T-shirt, like she'd just stepped out for a neighborhood stroll rather than ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠a lesson — like she'd come to hang out.

Her deep-pink lips and gentle eyes curved into crescents.

With that refined, feminine face that had almost certainly been every boy's first love back in middle and high school, she looked at him and smiled beautifully.

And standing face-to-face with that smile—

Twitch!

His cock went hard on its own.

Because he remembered that pure face turning filthy with lust.

Because he remembered those pretty lips straining to take and suck his cock.

Because he remembered Lee Yena — the devoted, virtuous housewife who knew no man but her husband Jaemin — forced by blackmail to strip naked and strike vulgar poses through her tears.

Because he remembered her crying out that his cock felt better than Jaemin's, thanking him for fucking her, begging him to cum inside.

Because he remembered Yena's pussy — the softest, most heavenly thing in the world, the one that had nearly made him cum the second he pushed in.

His lower half swelled until it felt ready to burst.

"You keep laughing, so this isn't working. Let's move to practical drills."

"Sorry~"

"I'm going to come up from behind. Try to respond. I'll actually grab you and touch you like a real molester, so try not to freak out too much."

"Okay. I'll do it the way you taught me."

"Walk slowly from here to over there."

"Okay~"

"……."

"……."

"……."

Grab!

"……!! Kyaah!!"

"I told you. Not a scream — pull out the spray."

Squeeze…

"Th-th-that's… w-wait… S-Seonghyeon-ah… y-you're touching my a-ass…"

"You know a real molester would do way worse than this, right? You're lucky this is just practice with me at the gym. Just now you would've been a perfect meal for some creep."

"Ah, r-right… it's the gym… yeah… y-you're the Director, so…"

"Obviously."

Squeeze…

"Hngh… S-Seonghyeon-ah… are you going to keep kneading it…?"

"We need to keep practicing, but you're reacting way too hard to my touch, so get used to it a little. We already did roleplay last time — why are you suddenly acting shy?"

"Mmh… s-sorry…"

"Let's give it our best. You don't want some guy who isn't Jaemin touching you like this, right?"

His beautiful friend's wife's ass was as springy and satisfying to squeeze as ever.

And Yena — who trusted him completely as her husband's best friend, as her own friend — said:

"…Yeah. That… I absolutely hate. I'll try hard."

"Okay."

Smack!

"Kyah…!"

"Every time you fail, you get one of those as punishment. I'll aim for just your ass a few more times, so get used to it. Here I come again."

"Hitting my ass is…"

"Ah-ah. Your Director said he's going to. Are you talking back right now?"

"Ngh… o-okay."

"……."

"……."

"……."

Squeeze!

"Hih…!"

"I even warned you, and the scream still comes before your body moves. In a real situation you'd never react in time. Jumping is understandable, but be a little sharper. Got it?"

Knead…!

"Aangh… I-I'll try again."

"Retry? Okay."

Smack!

"Hyaat…! Seonghyeon, you…!"

"If you don't want your ass spanked, do it right."

"Th-this time I swear I'll spray you!"

"Go, Lee Yena!"

The ass she had only ever allowed her husband — she was letting him have it like it was the most natural thing in the world.

"Mm, that should do it. You still need a bit more time to get the spray out and fire… but keep practicing and you'll cut that down."

"Haaah… so is that the end of class?"

"That's it for today. Good work."

"Mmh, good work nothing. You're the one who worked hard teaching me. Thank you, Seonghyeon-ah."

"Don't mention it. More importantly — we said we'd do a little exercise too, right? Right after this… well, it's the first day, so don't overdo it. Just get a massage and head home."

"A massage? Oh right, you mentioned that. And you've got a massage bed now that wasn't here last time… you're more serious about this than I expected."

"I learned sports massage a while back, remember? So I offer it to members on the side, and the reviews have been great. That's why I bought the bed. Since you're already here, sign up for a half-session of my massage before you go. You brought me all that delicious food — I'll put in extra effort."

"Hehehe. If Seonghyeon's doing it, of course I have to get one. You know my cooking. For the price of those side dishes, you'd better make it amazing~"

"Obviously… oh, want to shower first? You've been moving around — you must be sweaty."

"Should I? Getting a massage like this would be a little embarrassing… yeah. I will."

After taking a surprisingly fun self-defense lesson from her friend Ju Seonghyeon—

"Hm, hm-hm~"

—Lee Yena stepped into the shower room and peeled off her clothes, a little tune bubbling up on its own.

She was happy.

Happy to see the face of Ju Seonghyeon — her husband's closest friend, and someone who had nearly entered the "closest friend" category for her as well — under the pretext of a lesson. Happy to chat. Happy to take a self-defense class that had been fuller and more fun than she'd expected.

"Hm? Come to think of it, I actually worked hard in class, so is it even a pretext? Hehehe…"

During the practical drills, when Seonghyeon playing the molester had grabbed her ass or thighs, she'd jumped — but thinking about it, of course the gym's Director would touch her body during a lesson. That was normal.

They'd done far more intense roleplay than this before, after all.

Today too, Seonghyeon had thrown himself into the molester role for her sake, while still taking the lesson seriously as a proper instructor.

A friend who was that dedicated and sincere about his work — Lee Yena thought he was really cool.

Cool enough that she felt freshly guilty about laughing and interrupting the flow of class at the start.

And she was looking forward to the massage next.

"Seonghyeon isn't the type to make things up about stuff like this… so if he said the reviews are good out loud… is he really that good at massage?"

She'd vaguely heard before that he'd studied massage separately. But between friends — and with the usual boundaries between men and women — she'd of course never gotten a massage from him.

So she had no real sense of his skill. But Ju Seonghyeon almost never hyped himself up. If he was confident enough to say so, he was probably genuinely good.

"I sweated more than I thought… and he's giving ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠me a massage on top of everything. I'd feel bad if I was all sticky, so I should wash up properly. But doing all this for fifty thousand won a month… isn't that way too cheap? Yeah. I should talk to him about that later."

Even worrying that her far-too-kind friend might have made a pricing mistake out of ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠consideration for his members—

Shhhhh…

—Lee Yena washed her body.

"Mmh… that feels nice~"

Warm water wrapping body and mind in a soft, cozy haze, she was savoring a leisurely shower when—

Suddenly.

Click.

"Huh?"

Into the shower room where she stood—

"Yena-ya, mind if I wash up with you?"

"…Eh? Euh, ah! S-Seonghyeon-ah?!"

"What's wrong?"

"Ah, no… th-that's…"

With absolute, unshakable confidence, Ju Seonghyeon walked right in.