The Married Coach's Breasts and Permission

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Translator: penny

Chapter: 4

Chapter Title: The Married Coach's Breasts and Permission

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I'd shown the Player Coaching System to other people.

I'd even taken screenshots and sent them via text.

But the results were all the same.

This app was visible only to my eyes.

'...Is my head messed up from stress?'

Just in case, I'd searched ChatGPT, but nothing came up.

This was an app that existed only for me in the world.

"If that's true, then it's something incredible."

A bizarre app visible only to my eyes.

It couldn't possibly be something ordinary.

"Anyway, this thing lets me 'manage' athletes."

Right now, anything that could help with my coaching job was welcome.

If there was a surefire way to rack up achievements... I'd use this shady app or whatever.

"Ah, ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠but it doesn't mean much without any athletes to manage."

I opened the app for now.

The messages vanished, and two empty slots appeared on the screen.

It was just like a character creation screen in a game.

"What? Athletic ability improves through sex?"

A hollow laugh escaped at the message floating before my eyes.

As if this were some ero-game setup. Did that even make sense?

Regardless, the messages kept coming.

The messages stopped there.

To sum it up simply:

Have sex with registered athletes, and their athletic ability improves.

Train them that way, and I get some kind of reward.

'Rewards, huh. Money maybe? Or improved reputation?'

Honestly, I didn't need extra rewards.

If the athletes' abilities truly improved, that would be my achievement as a coach.

That alone had plenty of value.

'The problem is that condition of all things...'

It was still laughable no matter how I looked at it.

Sex with athletes improves their abilities? Come on.

"Sex" meant straight-up fucking.

"Fine, it's a weird app no one else can see, so let's say it's real."

But what kind of lunatic athlete would believe this and sleep with her coach?

Convince her that fucking me would make her the best? I'd be lucky not to get sued for sexual harassment and permanently banned.

Even if it really worked, getting to sex was the issue.

The more talented the athlete, the more cautious they were about such relationships.

If it was going to give me something like this, why not just hand out hypnosis powers like in some webtoon? Why this ambiguous crap...?

'Huh? Wait. Hypnosis?'

I double-checked the app's description.

Athletes registered in the app would feel trust toward me.

No matter who they were or what our relationship was.

"...How much trust are we talking?"

It obviously wouldn't let me fuck them right away.

If it did, it wouldn't say "trust"—it'd just say sex was possible outright.

Plus, it said "slight."

Probably just enough to make them like me a bit.

"Still, if I play this right, couldn't it lead all the way to sex?"

The app gave me a bit of trust from its power.

My job was to build that into a full man-woman relationship.

'...Using this app's power has way higher odds than going it alone.'

Coldly speaking, racking up achievements in a month was tough.

Nearly 100% impossible.

Athletes didn't transform overnight like that.

So this app was my one shot.

If it was impossible anyway, betting on this absurd app gave better odds.

"Alright. First, let's test how far this app's power goes."

I needed to see exactly what was possible with it.

Then I could act accordingly.

Early morning.

Or closer to dawn, really.

I did a quick wash-up and brushing, then headed straight to the gym.

It was my old routine.

'The gym's empty at this hour, so no prying eyes.'

But today, there was another reason I had to go.

"Oh my, Coach Han Dae-wi. Fancy seeing you here."

"Good morning."

"What happened yesterday? You didn't show."

"I was a bit busy."

Coach So-hee Yoo.

She was the reason I had to come at this hour.

Originally, I'd had the place to myself.

Then she started coming.

'She says it's to build a habit of waking early, but...'

Everyone knew she was dodging all the lecherous guys.

She's married, you say? Honestly, with a body like that, married or not didn't matter.

That killer ass made my dick twitch just looking.

'Though Coach Yoo seems to turn everyone down flat.'

She blocked affairs and one-nights alike.

No rumors at all meant she was loyal to her husband.

She was perfect as a test subject.

"I'll go stretch over there then."

"Sure, take care."

Thankfully, she didn't avoid me too.

So we'd shared these cozy workouts for weeks.

Cozy, but we just trained separately.

Still, seeing that fantastic body made early mornings worthwhile.

'Anyway, this is a great chance to test the system on her.'

No one else around, just us.

And we were already close enough to spot changes fast.

I pretended to rest and pulled out my phone.

Straight into the Player Coaching System.

'Let's check her info first.'

So-hee Yoo's info popped up on the screen.

'Ho! So that's how it works.'

It showed stats like appearance, figure, talent by grade.

And "Coaching Tips" covered her current state and discomforts.

'Fitting for So-hee Yoo—solid specs.'

Her Pilates-honed fantasy body was naturally S.

Appearance was one step down at A.

That surprised me a bit.

Someone like her could've gotten S for face too.

'The grading must be strict. Probably only idols or actresses hit S.'

That didn't diminish her appeal, though.

Those honey thighs and ass could seduce any man.

I'd known her specs were top-tier.

What intrigued me more was the trust stat.

'Hmm, trust at 4.'

Out of 10. Is that all our relationship amounted to?

'No, surprisingly, it might not be low.'

We met often and chatted.

Shared workout tips, swapped supplements.

We could grab coffee alone after meals without awkwardness.

Trust couldn't be low for that.

The system must have sky-high standards.

'If this closeness is 4, what happens at 10?'

I could probably make her do all sorts of naughty things.

With So-hee Yoo and her perfect Sports Academy-famous ass.

Gulp!

Sex with athletes boosts performance.

Now I understood the system's purpose.

My heart pounded wildly with fantasies.

'Whew! Calm down and test the system.'

Today's goal: register her and check effects.

I registered So-hee Yoo in the Player Coaching System.

I skimmed the explanations and checked her profile again.

No other changes.

Trust had jumped to 6.

'Oh, just registering bumped it by 2?'

A straight 50% boost.

That felt like a big shift.

"Hey, Coach Han Dae-wi~"

"Y-yes?"

"You've been standing there forever. Slacking already?"

So-hee Yoo approached with a smile before I knew it.

I nearly jumped.

Of all times, while I was messing with trust levels.

"No. Just thinking about something."

"Ah~ Makes sense. Must be rough, right?"

She nodded knowingly, a hint of pity on her face.

She must've heard about my firing.

"Not sure if this helps, but don't stress too much. A coach like you will do great elsewhere."

"Haha. Thanks. I'm studying hard and prepping everything."

"Really? As expected from Coach Han Dae-wi. Always so diligent."

Then it hit me.

I could steer this in a useful direction.

"Ahem! Actually, I've been studying athlete muscle care lately."

"Muscle care? Oh~ Didn't know that was a thing."

"Yeah. So, uh, is your shoulder bothering you by any chance?"

"Huh? Yeah! It's been nagging me. Never had this before."

Her eyes went wide in surprise.

No wonder—she'd never expect me to know her body like that.

Especially as a yoga and Pilates pro.

She rarely felt any discomfort.

She knew her body best.

"Looks like it's been about two weeks, right?"

"Whoa! Goosebumps. How do you know all this?"

"I've been studying."

All straight from the system.

To her, it was like meeting a master physician.

The system notified me of the trust rise too.

From 4—that was nearly double.

Now for the real play.

"If you're okay with it, how about I give you a massage to loosen it up?"

"Hmm~ You're not using massage as an excuse to grope me, are you?"

"No way. I'd never pull that sexual harassment crap."

"Haha! Kidding. I know you're not that kind of guy~"

I flinched but she laughed it off.

Good.

"Then, shall I?"

She sat properly on the equipment.

Her cute nape and exposed white neck were defenseless.

'Alright. Stay calm, take it slow. This is just an experiment.'

I wasn't planning to train her as an athlete.

She was a fellow coach.

What would I even do if her abilities improved?

No, even if it mattered, same deal.

I needed achievements in a month.

'To do that, I have to test how far trust at this level goes.'

She just happened to be a married woman.

I started with a light press on her nape, since it was a shoulder massage.

"Ha-ut!"

Coach So-hee let out a lewd moan and twitched.

An awkward silence fell between us.

"Coach Yoo?"

"A, ahaha... Sorry. That... was more stimulating than I thought?"

"Just a normal massage. Sensitive neck, huh."

"Not really... Anyway, sorry. Ignore it and keep going."

"...Got it."

I nodded and resumed.

Brushed her neck like before.

"Ah... Um... Hn!"

Intermittent moans from her lips.

She tried holding back, remembering before, but her body kept trembling.

That confirmed it.

She was feeling my touch right now.

'The system said she'd feel pleasure more easily from my touch.'

The nape was sensitive anyway.

My hand there gave her tingles.

"Neck's loosened enough. Time for shoulders."

"Y-yeah."

Her voice mixed relief and regret.

Confusing, but ending the good feeling left her wanting.

'Good reaction.'

I kneaded her shoulders slowly.

Her tensed body relaxed bit by bit.

"Hoo... Haa...."

The more I touched, the sweeter her moans grew.

"How's the pressure?"

"Good. Feels great. You're really ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠good."

"Just relax and leave it to me. I'll give you a whole new body."

"Pfft! Looking forward to it."

I was getting a sense of the trust effect.

The real key: did sex actually boost performance?

'Just fucking wouldn't cut it. Her skills need meaningful gains.'

If I convinced her but nothing changed?

I'd be the guy obsessed with seducing women, then fired anyway.

'Issue is whether married So-hee Yoo allows naughty stuff.'

Massage was normal enough.

But her sensitive chest?

"Coach Yoo."

"Yeah?"

"To do it right, I might need to touch your chest. If you're not okay..."

I checked just in case.

Didn't want a harassment lawsuit over a massage.

Her response surprised me.

"Mm... It's fine. It's all part of the massage. I trust you, Coach Han Dae-wi, so touch freely."

Direct permission from her lips.

Even to touch her breasts freely.

'Wow, trust at 7 does this?'

The old So-hee Yoo never would've allowed it.

Leg massage would've been her limit.

But breast touching? Just thinking about groping those huge tits got me hard.

"I'll touch slowly, so don't panic no matter how it feels. It's all for treatment."

"Hehe! Got it~"

She even thrust her chest out, like "go ahead."

'Holy shit, the volume is insane.'

I'd never stared openly, even as friends.

But up close, that cleavage was unreal.

I held back a grin and reached out.

Grabbed those massive tits that overflowed my hands.

"Uh-hn...."

Even over clothes, the feel was heavenly.

Squishy yet smooth skin pressed clearly.

That overflowing softness.

National treasure-level breasts that deserved awe.

'To think I'm groping So-hee Yoo's tits like this.'

She'd driven coaches and athletes mad shaking that ass.

Now, the owner of that killer body offered her chest to me.

"Haa... Haa.... Nn♥"

'Athletic woman's tits are different. Perfect shape and supreme softness.'

S-class figure system-certified?

Slim waist contrasting flaring hips and honey thighs.

Topped with huge breasts—impressive.

Even over clothes, I could tell.

These tits boasted fantasy-level softness.

"Ah... Uhng...♥ Haa."

Moans escaped every knead.

No bra off, no clothes off—yet wildly sensitive.

'Why's her voice so sexy? Wanna record it.'

I glanced at her face.

Eyes closed, savoring my touch.

Flushed face of an aroused woman.

'Fuck. So hot. This ain't enough anymore.'

Originally, light skinship was the plan.

But her face and these tits made me crave more skin.

"Coach."

"Y-yeah? What?"

Had she sunk into my touch?

Her voice was dreamy.

Casual speech slipped out unconsciously—and it turned me on more.

She was older and married, after all.

"S-sorry, but for a proper massage, it'd be best to take everything off."

"...Take my clothes off?"

"Yes, purely for treatment. If not, no problem."

I added the disclaimer.

Though inwardly, I wanted to see those sexy tits now.

"W-well... Stripping's embarrassing. Is it necessary?"

"Yes, essential for treatment."

"...Okay. I'll do it."

Simple words, but from her, my heart raced harder than ever.

Swish.

She stripped off her top herself.

A gray sports bra appeared.

Sweat from my chest touch? Gray darkened to black—sexy as hell.

That endless deep cleavage was plenty to excite any man.

'...Naked from the waist up? Looks even bigger than usual.'

I knew they were big, but seeing them? Insane.

Enough to feed a baby and husband with milk to spare. Prime milf tits.

I swallowed hard and asked.

"Coach, what's your breast size, if I may?"

"Me? E-cup. Why?"

Blessed E-cups indeed.

And right now, this married woman's breasts belonged not to her husband, but to me.