Squat Therapy Gone Wild
"Squats?" Yoon Yerin tilted her head at the word.
"Yes, now that we're warmed up, it's time to get serious." She seemed a bit tense at the word serious, but that aside, there was a specific reason I'd chosen squats.
Time to touch back...
Squats were the perfect pose—under the guise of assisting, I could grope all I wanted. In other words, this was my plan for revenge, to make her legs shake.
"First, spread your feet shoulder-width apart, keep your back straight, and place your hands comfortably in front."
Yoon Yerin followed awkwardly.
"Then, push your hips back and lower yourself down."
"L-like this?"
"...That's good too, but—"
Grab—
"Eep!?"
"...You have to be careful not to stick this out too much."
"L-Lee So-yul? Just now..."
"Why? Did something happen?"
I'd lightly gripped Yoon Yerin's cock before quickly moving my hand to her thigh, acting like it was all an accident.
Bet that caught her off guard...
And so, the full mirror therapy session began.
"No, it's just..."
"Shall we try it again?"
"W-Wai..."
After just two tries, Yoon Yerin was already wobbling unsteadily.
"What's wrong? Is something uncomfortable?"
"No, it's not that..."
"Must be cramps since it's your first time. Let me loosen it up for you."
Slide—
"Eep."
"Huh, what's wrong? Your breathing's been ragged, and you look uncomfortable."
Yoon Yerin turned her head, glaring at me amid the constant touches. Her lips were pouting, her eyes pitiful.
But she started it first.
She had to pay the price for teasing. I pressed my chest fully against her back, wrapping my arms around her abdomen.
"...This doesn't look like proper exercise form at all."
"Nonsense. I'm teaching you right—showing you exactly where the tension should be."
With that, I slipped my hand between her inner thighs. The area around her thighs was tented stiffly by her hardened cock. I crept my hand toward the source, tapping it lightly.
"Nngh..."
"Right here. You should feel the burn here if you're doing it correctly."
Every stroke inward brushed against the hot lump. It kept grazing my hand, smearing me with the precum already leaking out. Yoon Yerin's expression grew more troubled by the second.
...But this feels kinda pervy.
Come to think of it, this was the first time I was initiating the touching. And I'd recreated this atmosphere myself...
No, I can't back down now. This is just to show her how bad it is to tease like that, right? Y-yeah, it's fine.
But the more I touched her cock, the hazier my mind got. Sure enough, silence fell between us. Our form was no longer anything resembling squats—we'd both sunk to the floor.
"......"
What we were doing on the floor was even more outrageous. One of us offered no resistance, stifling moans, while the other stroked her cock from behind. This was definitely not gym-appropriate.
"...Lee So-yul."
"Y-yes...?"
"...Pervert."
Twitch—
My hand jerked at the soft word pervert. Not out of guilt. Or at least, not entirely.
"......"
For some reason, my hand sped up a little.
"...Nngh, you wanted to touch my cock that badly?"
"N-no, that's not it..."
"Then why do you keep touching it?"
"W-we're supposed to be exercising, but you're still hard."
"You made it that way, So-yul."
I just kept moving my hand silently through her words.
"...Is it because I teased you earlier and left you hanging?"
"......"
"So you're doing the same to me now, planning to mess around after?"
"I-I'm not a pervert like that? I-I'm just helping because you looked troubled..."
"...Is that so."
Then—
"Rub a little on the front too, please."
"...Eep."
"Ha-ah, good... Now wrap around it and stroke with your hand."
Squelch, squelch—
"Hnn... I'm the one being touched, but your breathing sounds rougher, So-yul."
"What..."
"...Your pussy getting wet right now?"
"N-no, it's not..."
My mind went blank again. Even though I wasn't the one being touched—even though I was in control—my ears burned, and my pussy twitched.
"...This reminds me of what you did to me last time."
"Eep..."
"You seemed so awkward then, it made me awkward too."
"......"
"But now your skills have improved. Touching my cock first wasn't enough—you've turned full pervert."
The mood had flipped completely. Or rather, it felt like it had already reversed. I didn't want to admit it, but my voice was getting louder.
And I'm the one doing the touching... Why am I getting so wet...?
Realizing something was wrong, I pressed even closer to Yoon Yerin. Not to stimulate her more, but because my own spot itched so badly I had to do something.
"...Something's pressing against my lower back."
"Eep..."
"It's so warm and wet... I think I know what it is..."
"Nngh..."
Rub, rub—
"...So-yul, you've gone full pervert."
...I'm not.
But the situation left no room for denial.
I-it's all because of this thing.
So I just blamed the cock. After all, it was the root cause of everything.
Slap, slap, slap, slap—
"Eep...! S-suddenly like this...!"
For that reason, I started tormenting the naughty thing. Shaking it as much as my own itch demanded.
"...You're the one fully erect."
"Ahng...♡"
"H-hurry up and cum already."
Soon, I felt Yoon Yerin's body trembling slightly. A sign it was close.
...Then, just a little for me too.
Slide—
"Guh, y-you're too close..."
"...Don't know."
Slap, slap, slap—
...Rub, rub—
Slap, slap, slap—
Slap—
Rub, rub—
"Eep, w-wait, stop rubbing from behind...♡♡♡"
"Nngh...♡♡♡"
In the end, a full handjob with her cock completely out. And Yoon Yerin's hand on my pussy before I knew it. Every movement of our hands sent tingles below.
"Agh, S-So-yul, I'm about to...♡♡♡"
"C-cum for me...♡♡♡"
"I-it's, coming...♡♡♡♡♡"
"Ahng♡♡♡♡♡!!"
"Heek♡♡♡♡♡!!"
Squirt♡ Slurp♡
It happened in an instant. The massive load erupting from her cock. The squirt from my pussy. All in a flash.
"Haa, haa, hnn..."
My body kept twitching; I couldn't move for a bit. The aftershocks lingered.
Once my breathing steadied somewhat, a low whisper reached my ear.
"...Teach me more exercises next time♡"
My face burned so hot I ignored the words. Or rather, I answered with a small nod instead.
Thus, our first workout ended in total chaos.
*
Shower—
A bit later, in the shower room to wash up. Standing under the water, my mind finally cleared.
"Haa."
Maybe that's why the memory of what we'd done kept replaying, making me bonk my head against the shower wall.
...What the hell happened to me?
It was literal. Yoon Yerin had that thing, sure, but why was I getting weirder by the day?
...My body's changed too, of course.
The problem was, not only had I touched her cock first, but my resistance had noticeably dropped compared to before.
"I'm crazy, totally crazy."
I finished showering, shoving aside the growing dissonance equal to my fading reluctance.
When I stepped out, towel-dried, Yoon Yerin was there. She'd already showered and changed, it seemed.
"...All clean?"
"...Yes."
An awkward air hung in the middle of the living room. Not our first time, but this vibe just wouldn't lift.
...First time cumming together, maybe.
I pretended not to notice, starting to dress.
"......"
But as I pulled on my usual white tee and reached for pants—
I felt an odd gaze. Naturally, Yoon Yerin.
"C-can you not stare while I dress...?"
"Ah, sure... But I have a question."
"A question?"
Not content with watching, she approached. Then she started inspecting my body closely, like something was off.
"W-why are you staring again?"
"No, it's not that..."
"Then why..."
"...Why don't you wear underwear, So-yul?"
!!
Her question made my body jolt hotly. I couldn't even answer.
"Uh..."
"Now that I think about it, it's weird. Ever since the first day, you never wear the ones I leave out with your clothes."
"No..."
"Did you maybe not see them?"
"...I did."
Yoon Yerin eyed me with a clear then why?
I had no words for that look.
...Because saying a woman feels embarrassed in women's underwear would sound weird.
I'd just tried to brush it off, but...
"...I don't know why you skip it, but as someone living together, I can't just ignore it."
"Huh? No, that's..."
"You might chafe your skin or something."
But as you see, I was caught flat-footed.
"I'll help you put them on, so lift your legs."