First Out-of-Gym Lesson for My Cute Little Sister—and Looking Ahead to Yena's First Class

With Lee Dami, we'd already done everything there was to do—so even though we hadn't really done anything as gym master and member, her satisfaction had maxed out in a single leap.

"So in the end… self-defense or whatever, it's just telling me to screw the women, huh?"

Or maybe it was a system where, once someone became a member, any satisfaction they got from me would raise the meter.

But last time, when I'd eaten her out in the café storeroom, no experience had come of it… Was that because she hadn't set foot in the gym even once?

Maybe the act itself had to happen at the gym first, and only then would experience keep climbing naturally afterward. Something like that?

Well, it didn't really matter either way.

What mattered was that from here on out, Lee Dami's pussy was mine—and that she was even going to gift me Narae's pussy on top of it.

"Narae was so cute."

Dami's suggestion that we show Narae the two of us having sex, just to gauge her reaction, hadn't exactly left me calm.

Narae, like Dami before her, was still a woman with no connection to my gym at all.

But Dami had been so sure of herself, and the idea of letting another woman see my body and watch us fuck had been exciting enough that I'd agreed.

And luckily, just as Dami had predicted—

Narae had been incredibly embarrassed, and yet she'd been utterly, intensely fascinated by Dami and me having sex.

At first she'd frozen up from pure shock and stared like she was trying to burn a hole through us, but even after that, the way she kept sneaking little glances had been obvious.

"I can't wait."

The taste of that brown-ponytailed, bright, adorable café girl's pussy.

And the fact that I could take her in a threesome with Dami, no less.

According to Dami she was a hundred-percent virgin, too—how was I supposed to not look forward to that?

Still, it wasn't happening anytime soon.

Seduceing Narae after this would be Dami's job—our Dami, already head over heels for my cock.

Which meant what I needed to do right now was—

Swish, swish!

Clean the gym until it sparkled.

"Cleaning, cleaning!"

Because any minute now, the cutest girl on Earth—my Yuna—would be walking through the door!

Even so, I couldn't exactly make Lee Dami scrub the floors, so the second I sent her off I tore into cleaning the gym like a man possessed.

And then, three in the afternoon.

"Oppa, hi!"

Yuna bounced into the gym with a bright greeting, a bag in one hand. Probably the chicken she'd promised to bring.

I'd heard she mostly streamed late at night, so she couldn't have been up for long—and yet her energy was sky-high.

"You're here. You're buzzing today. Something good happen?"

"Hehe, well, it's a day I get to see Oppa at the gym!"

"……."

The ambush of a line made my heart skip, but I knew she didn't mean it that way.

"…Really looking forward to the massage, huh? And the nutrient."

"Yeah! You know I kept thinking about it the whole time I was streaming yesterday? It's seriously the best thing ever! And I've actually started kind of enjoying the workouts too… Mmngh~"

Yuna chattered as she walked over, and the moment she reached me she went up on her tiptoes and tilted her face up.

I lowered myself and dipped my head without thinking, sticking out my tongue. Yuna caught it between her little lips with a soft ahng.

"Haum… chup, chuuup…♡"

By now it was basically routine—Yuna's on-arrival tongue massage slash health check.

It had gotten to the point where you couldn't tell who was massaging whose tongue and who was doing the checking, but either way, when I pooled saliva and let it spill into her mouth, she absolutely loved it.

After only about three minutes, though, Yuna surprisingly pulled away.

"Hwah… Oppa, you haven't had lunch, right? Eat some chicken! This one's really good."

"Thanks. You gonna eat with me?"

"I just woke up, so chicken's a little… And I've still got more at home. So you eat lots, Oppa! It cooled off a ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠bit so I ran it through the air fryer once."

"Wow, you went that far… Thank you, Yuna."

She held the chicken out to me. Even through the box I could feel how warmly it had been reheated.

Touched by the care she'd put into it, I accepted it gratefully.

Aside from a glass of health drink when I'd gotten up and a single bite of bagel a little while ago, I hadn't eaten a thing, and my stomach had started to growl.

I sat down in the gym right away and pulled out the chicken.

Boneless seasoned barbecue chicken from a brand I'd never seen before.

I picked up the fork that had come in the bag and put a piece in my mouth.

Chew, chew…

"This is good. You did an ad stream for this place yesterday… or this morning, was it?"

"Yeah. Around midnight. Hey, Oppa. You know my condition's been crazy good lately? Working out with you has built up my stamina, and especially after I got the nutrient the day before yesterday, my whole body just felt light all day long."

"Mmh… That so? Looks like the nutrient really agrees with you."

"I guess so! And I streamed late last night so I only got a few hours of sleep, you know? I think I crashed around nine in the morning? But the second I opened my eyes I felt super refreshed! Same thing yesterday! Normally when I stream long, the next day I'm all stiff and wiped out."

Beside me as I ate, Yuna prattled on and on. Mostly about how dramatically better her condition had gotten after receiving my nutrient.

Yuna being adorable was one thing, but the content of it filled me with a real sense of accomplishment. Listening to her, Jeong Yesol's claim that better condition had made studying easier didn't sound like empty flattery either.

I was just glad I'd been able to help.

I should've slipped Dami a shot of nutrient somewhere in the middle, too. Kind of a shame I'd just dumped it into a condom.

"So the second I woke up earlier I washed up and did my phone-game dailies while staring at the clock every single minute. Just waiting to get my nutrient and my pussy massage from Opp—"

"Yuna."

"Hm? What?"

"Want your nutrient while Oppa's eating his chicken?"

"Ah—is that okay?! But won't I get in the way of your meal…"

"What's there to get in the way of. The only problem is I might drip chicken on your head."

"Th-then… Hehe… Take your cock out for me, Oppa. And you absolutely cannot drip chicken on my head!"

"Okay. I'll be careful."

The offer to let her suck my cock made Yuna light up with a happy smile.

I set the fork down, stood up briefly, and stripped off my dobok pants and underwear.

While I was at it, I told her:

"Yuna, you strip too. All the way."

"Me too? Right now?"

"I told you last time—Oppa gets more turned on, and then more comes out. For that, I need you naked too."

"Eh…"

At my words, Yuna's face went red.

What was this?

Why blush at that line now, of all times?

Her sudden shyness left me puzzled, and Yuna fidgeted as she explained.

"You get turned on by my body too…? My figure isn't even that good…"

"What are you talking about. Last time Oppa pumped you full of nutrient, remember?"

"Th-that was… I thought you were just reacting because I was stimulating you with my mouth…"

Ah.

She'd figured the hands-on oral work had just been physiological stimulation getting me hard?

It wasn't entirely wrong, and sure, compared to the other women Yuna's body was on the cute, petite side.

But the idea that anyone could look at a girl as pretty as Yuna naked and not get turned on was absurd.

"Come on, no. Of course part of it is how hard you work to get your nutrient, but fundamentally it's because your tits and your pussy and your ass are all so cute and pretty that I get even more turned on."

"Pretty and cute… I-I seeee~"

"And this is a secret, but… you're way prettier than any of the other women members Oppa's seen while giving massages."

"Hehehe… I'm the prettiest…"

Yuna twisted her body, shy and embarrassed.

She looked happier than simple praise could account for.

I didn't know why.

Either way, Yuna seemed to have found her confidence; a bright, full smile spread across her face.

"Then Oppa… you have to look at my body and cum even more nutrient for me♡"

And she started peeling off her clothes one by one.

Just like always, without a shred of hesitation even in front of me—underwear and all.

Yuna's breasts and pussy lay bare and unguarded before me again today.

Is it because she talked that nonsense about her figure being nothing special?

Her pink nipples looked even lewder than usual today.

So I lightly scratched around them with a fingertip.

"Hyaang…♡ The massage is nice, but… you can eat your chicken first…"

Even as she let out that adorable little moan, she dutifully told me to prioritize the chicken over massaging her.

This while arching her upper body the second my hand touched her, nipples standing stiff and proud.

Still, I couldn't exactly refuse my little sister's consideration, so I sat back down.

Then I patted the floor to my left and told her:

"Wanna sit here and suck my cock? Lie across Oppa's thigh."

"Okay!"

Yuna scrambled right up onto my thigh. The baby-soft feel of her skin and the press of her small breasts sank into my leg.

Lying there like that, she cradled my cock and balls carefully in her little hands.

"Haauu… Oppa's cock…♡"

‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠

With her looking ready to swallow me any second, I quietly reached my left hand toward her ass.

I slipped my hand into the cleft of her cheeks and set a finger against her pussy entrance.

Squish…

"Haang…"

Just as expected—already wet and slick.

I didn't stop there. I pushed my middle finger straight into the hole.

Squilch… squelch…!

"Hieeuut…! Hit… O-Oppa…?"

Even a pussy that took my cock just fine still clamped down tight around a single finger.

Feeling her hot, sticky inner folds seize my finger, I smiled down at Yuna as she looked up at me with a flushed face.

"Built up again since yesterday, huh? While you take your nutrient, Oppa's gonna loosen up Yuna's pussy for you. I can eat chicken with one hand just fine."

Squelch, squish… press…!

"Haang, ang…! O-Oppa's finger… pressing deep inside…"

"Feel good?"

"Feels gooood… hht… Oppaaa…"

"Hm?"

"Thank you… for putting your finger… in my pussy…♡"

"You don't have to thank me for something like this. Just suck Oppa's cock already. After we finish working out later I'll give you that pussy massage you love and pump you full of pussy nutrient too."

"Hehe… Okay! Mmh… hauuup…!"

Yuna took my tip into her mouth and started licking along the ridge of my cock with her tongue.

Haa.

The chicken was delicious, Yuna's mouth-pussy was delicious, and Yuna's actual pussy was springy and tight.

I kind of just wanted to tell her to come five days a week.

After I'd finished the chicken.

Same as Monday—once the run was over, I pumped pussy nutrient into Yuna until she was spent.

"Ook, hahk… Hehehe… Oppaaaa… sho much nutwient… thank youuuu…♡"

Sprawled face-down on the mat, her whole body trembling.

I'd cum into her so many times in a row that my cock-water nutrient was dripping back out of her pussy in thick rivulets, not yet absorbed.

So today, too, I carried her all the way home on my back.

It wasn't that she couldn't walk—I just wanted my Yuna to be comfortable, so I insisted.

I set her down in front of her door.

"Thanks for walking me home, Oppa."

"You're gonna need to put on a little more weight. You're so light carrying you barely even counts as a workout."

"And if I gain weight you'll just complain that I got fat!"

"Absolutely, unconditionally not true. I can swear on it."

"Heeh~ Really? I'll be watching!"

We traded a little playful bickering, and just as the mood started to settle into goodbye—

Yuna let out a small, wistful grumble.

"I kind of want Oppa's massage and nutrient tomorrow too… Mmngh… but you've got a booking, so it'd be hard, right…?"

She wanted my massage and nutrient tomorrow as well—if I was busy she understood, but she'd really like it if I could make it work. That quiet little request.

I thought it over seriously.

It wasn't that I couldn't. But tomorrow I had Yena booked.

Yuna's streams usually wrapped around six or seven, and on workout days she got up around two, so her window would inevitably collide with Yena's.

Any earlier and she'd be cutting her sleep way too short; after Yena's slot and she'd already need to be streaming.

In that case—

I pulled out my phone as if checking my schedule.

Then I opened an app and said:

"Yuna."

"No, Oppa. You don't have to push yourself…"

"No—running doesn't have to be every day, so we can skip that. How about tomorrow morning, before you go to sleep, Oppa comes up here and gives you an out-of-gym lesson… an out-of-gym massage?"

"Before I go to sleep? As an out-of-gym visit?"

"I wake up pretty early in the morning anyway, so I can swing by for a quick massage before I wash up and head to work. And it's not like 'out-of-gym' is far—it's just two floors up."

I figured I might as well test the Out-of-gym Lesson app while I was at it, so I floated the idea to Yuna.

Her eyes started sparkling like the thought had never even crossed her mind.

"I-I'd love that if you would… Are you really going to?"

"You'll sleep better after a nice clean massage from Oppa, right? And tomorrow's not a workout day, so you can sleep in a little. Yeah?"

"You're right! Oh my god, oh my god! That's perfect! Thank you so much, ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠Oppa! I'll definitely wrap my stream before six, clean the place up, and wait for you!"

"You don't have to go that far. Just straighten up the bed so Oppa can give you the massage. Should I come around seven?"

‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠

"That works! Between six-thirty and seven!"

"Okay. Got it. I'll be off, then. I've got a delivery coming soon. Stream hard."

"Okay! See you tomorrow, Oppa!"

The fact that she could get my massage at home, in bed, before she went to sleep in the morning, clearly delighted her.

Yuna waved with a blissful face.

I waved back and headed down to the gym again.

Looking forward to tomorrow—starting the morning at Yuna's place, on Yuna's bed, burying my cock in Yuna's pussy.

And then.

It's her first lesson, and with Yena's personality she'll be ridiculously embarrassed, right? But in the end she'll show me everything… Haa, I want to see Yena spread her pussy open for me herself!

Looking forward to the woman I'd be seeing again after four days—the one I sadly wouldn't get to fuck yet, but could at least get a taste of.

Looking forward to that custom-fit exclusive pussy, made for my cock alone.

My friend's wife's pussy.