His Cock vs. Her Curves – Gym Day

Perhaps it was the rush of his first day in the new unit, but time seemed to pass in a blur for Second Lieutenant Kim Jaejun. Immersed in the unfinished mission manual, he barely noticed the hours ticking by until it was nearly time for physical training.

As the soldiers returned to the barracks from their duties outside, Master Sergeant Go Suyeon, changing into her workout clothes beside him, turned and asked casually:

“Fire Direction Officer, did you bring clothes to change into?”

Jaejun nodded.

“Yes, I did.”

She responded with a hint of amusement.

“But we still don’t have a separate men’s changing room… so you’ll probably have to use the newly built men’s restroom on the first floor.”

Jaejun accepted the awkward reality with a polite smile.

“Ah, yes. That’s fine.”

With that, he gathered his T-shirt, shorts, and sneakers, and made his way downstairs.

The new men's restroom, located just off the main stairs, was clearly a rushed addition to the building. The finish was rough, but it was at least clean. Without bothering to look around, he changed quickly and headed back to the second floor.

Leaving his uniform and boots in the administrative office, Jaejun stepped into the multipurpose hall, where the battery’s soldiers had already gathered. Standing at the front, leading them, was none other than Captain Lee Seona—his commanding officer, and the most physically striking woman he had ever seen in uniform.

That day, she wore a thin windbreaker over a tight T-shirt and deep purple leggings that clung tightly to her skin, outlining every dangerous curve.

As Jaejun’s eyes drifted lower, he felt his throat tighten. Her hips, impossibly wide and full, swelled beneath the clingy fabric like the curves of a goddess.

“How many inches are those hips…?” he wondered.

He swallowed hard.

Captain Lee, catching sight of him with the corner of her eye, turned her attention back to the soldiers.

“Alright, everyone’s assembled on time. Now, let’s go down and line up in four columns on the parade ground. Move out!”

At her command, the flag bearer led the formation down the stairs. The officers followed suit, and Captain Lee turned toward Jaejun, her wide hips swaying hypnotically with every step.

“Jaejun, watch how I lead physical training today. You’ll be in charge starting tomorrow. And you didn’t forget we’re working out together after, right?”

“Yes, I remember, ma’am.”

“Good. Let’s go.”

As she descended the stairs, her hips rocked from side to side, drawing Jaejun’s gaze like a magnet.

He didn’t even like working out much, but the sight of those hips bouncing in front of him made him eager for the session to begin.

Physical training began with the usual regimen—push-ups, sit-ups, and a 3km run. Once dismissed, soldiers broke off into smaller groups or headed to their own routines.

Captain Lee gestured for Jaejun to follow her.

“You can lead PT from tomorrow, just like I did today. Got it?”

“Yes, ma’am.”

“Good. Shall we go?”

She led him to the battalion gym on the first floor. As she walked ahead of him, her hips seemed to move with deliberate purpose. Jaejun couldn’t stop himself from stealing glances—her strength and sensuality blended perfectly.

They reached the gym. She casually opened the door and flipped on the lights.

“These days, everyone’s into yoga or Pilates, so nobody comes here. I get the gym all to myself.”

Ziiiiip…

With that, she unzipped her windbreaker and slipped it off.

Whoosh.

Beneath, her melon-sized breasts bounced slightly under her black T-shirt. Though they’d been overshadowed by her massive hips earlier, they now demanded their own attention.

She moved over to the Smith machine, her tall 175cm frame full of explosive energy. She began loading plates with practiced ease.

As she bent over, Jaejun found himself face to face with her massive, round hips, the leggings pulled tight across their full shape—so tight they were nearly translucent in places.

His heart pounded. His 26cm cock started to swell immediately.

He clenched his jaw and forced himself to look away, trying to hide his growing erection.

Thankfully, he’d worn his tightest underwear, so his shaft stayed somewhat pressed to his thigh. But if he got fully hard, it would be impossible to hide.

Captain Lee hoisted the bar onto her shoulders and spoke without looking back.

“I’ll do a set first, then you go. Don’t just stand there—come behind me and check my form.”

“Y-yes, ma’am...”

She spread her feet shoulder-width apart, preparing to squat. Jaejun moved behind her, clasping his hands in front of him to hide the half-hard cock pressing against his shorts.

Then she began squatting.

“Hup! Hoo... hup! Hoo...”

With each breath, her enormous ass moved up and down, her tight leggings stretching with every motion. The rhythm of her squats, the bounce of her hips—it was erotic beyond words.

The way her hips rocked back and forth, it looked like a woman riding a man. Jaejun’s cock pulsed painfully, fully erect now, pressing hard against his underwear.

Desperate, he turned around and stuck his hand into his shorts, adjusting his shaft to lie flat against his thigh, squeezing his legs together to hold it down.

Just in time, as Captain Lee called out:

“Jaejun, why’d you turn around? I told you to check my form.”

“Uh… sorry, ma’am. Got something in my eye.”

He rubbed his eye quickly, pretending discomfort.

She stepped closer, her expression softening.

“Jaejun, don’t rub your eye too hard. Let me take a look.”

She approached. Her subtle scent—a gentle, feminine musk—wafted up, triggering his most primal instincts.

Even with his cock pinned between his thighs, it twitched violently, and pre-cum started soaking into his shorts.

Captain Lee leaned in, gently lifting his eyelid.

“Hmm… I don’t see anything. Still bothering you?”

“Yes… a little discomfort still.”

“I’ll blow on it. Hoo…”

She blew softly, her plump, glossy lips just inches from his face. Jaejun’s cock twitched again, another hot bead of precum wetting his thigh.

Pretending to rest, he sat on a bench nearby, trying to calm himself.

“Just rest for a bit. I’ll keep squatting.”

“Yes, ma’am.”

After a few agonizing minutes and a flood of "wholesome" thoughts, his erection finally subsided. He stood again.

“Ma’am, I’m good now.”

“Huff!... Really?”

She racked the bar and stepped back. Sweat glistened on her forehead and collarbones, and Jaejun had to shake his head to keep his thoughts in check.

She turned, holding a weight plate.

“How much can you squat?”

“Not much… I’m still a beginner.”

“Let’s start at 60.”

She adjusted the weights and motioned for him to step in. He took the bar across his shoulders and began his set.

“Your form’s good, but spread your legs a bit more.”

He followed her advice, and her encouraging voice pushed him forward.

“Oh… For a beginner, your form is really good!”

Pleased, she increased the weight. Jaejun accepted the challenge, his confidence growing.

As he attempted 120kg, his legs started to tremble. Captain Lee quickly stepped in.

“Slow down…”

She placed her forearm under his armpit to stabilize him. Their bodies nearly touched. That first physical contact sent an electric rush through him.

The adrenaline helped him finish the set.

His cock, half-hard again, stayed mostly hidden—for now.

Clank!
“Whew… That was tough.”

“Don’t exaggerate… You’re a beginner and just did 120kg!”

She smiled warmly and led him to the bench press.

“We did legs. Now let’s hit chest. Lie down!”

Jaejun obeyed.

She moved to the head of the bench, straddling the bar with her legs. His gaze was immediately drawn to the plump mound in her leggings.

There it was—a prominent camel toe, stretching the thin fabric between her legs.

His heart pounded. His imagination went wild.

What would it feel like to touch it… taste it…?

“Jaejun?”

“Ah! Yes…”

Snapping out of it, he lifted the bar.

“40’s really light for you.”

She bent and straightened her knees as she spotted him, her camel toe rising and falling, pressing and relaxing—an impossibly erotic sight.

His cock twitched again, starting to rise.

No! Not again…

Fighting the urge, he squeezed his eyes shut, cutting off visual stimulation to suppress the inevitable.

He finished the set. She added weight.

“Can you go straight to 60kg?”

“Yes! I can.”

He responded quickly, both to distract himself and to impress her.

But as the bar returned to his hands, and her curves danced in front of his face once more, he realized—

This wasn’t going to be easy.

Working out this close with such a beautiful boss is nice, but... how the hell was he going to survive it every day?...

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To be Continued...