“Now... like this...”

Captain Lee Seona seemed completely absorbed in explaining the proper form for the “band side step” exercise. Her instructions continued with passionate energy—but for Kim Jaejun, who had her voluptuous 42-inch hips jiggling right in front of him, only fragments of her words registered in his mind.

Her massive buttocks, encased in deep purple leggings that perfectly hugged her curves, appeared smooth and tight—like the flawless surface of a finely sculpted ceramic vase.

As Jaejun fixated on her luscious hips, an earlier memory flashed across his mind: the thong he had seen in her washing machine.

‘There aren’t any panty lines showing through those leggings… so she must be wearing that thong right now…’

The thought that such a tiny strip of fabric was the only thing covering the most intimate part of her aroused his imagination even more. His fully erect cock throbbed and pressed up against the underside of the table, to the point of pain. But even that discomfort was trivial compared to the erotic visual before him.

Just as he was about to completely lose himself in her curves, Seona turned her head toward him. He quickly closed his mouth and redirected his gaze, just as she pressed a finger to the outer curve of her own butt.

“If you look closely, this area gets stimulated every time you move your steps...”

Her finger pressed into a specific spot on her hip, which visibly flexed and jiggled as she demonstrated the side steps.

Then, as if realizing that a visual alone wasn’t enough, she turned to Jaejun with a casual expression and reached for his hand.

“It’s faster to know the stimulation point by touching it yourself than just seeing it… Here, Jaejun, press here lightly with your finger.”

Without hesitation, she guided his left hand directly to her firm, round buttock.

…And just like that, his fingertip was pressing into the warm, soft flesh of her enormous hip.

Squeeze.

A quiet gasp escaped Jaejun as he felt the surreal texture of her mochi-soft skin layered over firm, well-developed glute muscles. There was no doubt this wasn’t just a plump ass—it was the result of tireless dedication to training. The sensation stirred both awe and lust inside him.

Mesmerized, he began gently pressing and releasing her hip with his finger, as if appreciating the texture and springiness.

“How is it? Now you know exactly where the stimulation point is, right?” she asked, clearly amused and somewhat proud.

“Yes, ma’am… I definitely understand.”

But what he truly understood was how badly he wanted to grab those voluptuous hips with both hands, spread them apart, and bury his face in the steamy valley between them.

The combination of physical contact and the unspoken thrill of touching his superior officer in such a bold way had precum steadily leaking from his cock.

Then came the most dangerous proposition.

“Then, Jaejun, do you want to try it yourself now?”

Her question caught him off guard. Though she meant the exercise, his current condition made standing up impossible without revealing his hard-on. Thinking quickly, Jaejun held his forehead and feigned dizziness.

“Ugh, suddenly my head… Captain, can I try it tomorrow instead? I think the alcohol’s hit me a bit hard…”

“It’s best to try right now, but I guess it can’t be helped… Are you really dizzy? Okay, no more drinking for you tonight.”

Though she sounded a little disappointed, concern still lined her voice. She removed the band from around her knees and returned to her seat, taking those juicy, round hips with her. Jaejun sighed in relief and frustration.

Whew...

“Hey, Jaejun, are you really not feeling well?”

“N-no, it’s not that bad.”

“Okay. Then let’s start wrapping up.”

Still unaware that he’d only pretended to be unwell to avoid exposing his massive erection, the battery commander began clearing the table, her demeanor calm and composed.

And so, their erotic and tension-filled first dinner together came to a close.

Creak, creak, creak.

Hours later, past 11 p.m., Jaejun lay in bed, gripping his 26cm monster cock—so hard it felt like it could pierce the ceiling. His mind reeled from everything that had happened since dinner. The sight of her tight hips, the memory of her thong in the laundry, the sensation of touching her glutes—it was too much.

He stroked his cock furiously, panting with lust.

“Hngh!... Fuck… the commander’s huge ass… I want to fuck that ass from behind so bad, ugh...”

His mind dove deep into fantasy.

In his vivid imagination, he and Captain Lee Seona were on the floor beside the low table, still surrounded by leftover jokbal and soju. They were in a 69 position—her hips straddling his face, while her mouth enveloped his thick cock.

“Slurp, slurp, smooch, smooch… Captain, your ass tastes so good.”

“Haaang… Jaejun, your cock is so big and tasty too, slurp, slurp…”

Her juices, mixed with his saliva, flowed freely from her swollen pussy. He clutched her massive 42-inch hips, kneading them greedily as he buried his face deeper, licking her sensitive folds and swollen clit.

Slurp, slurp, chuooop!

Each time his tongue grazed her clit, she moaned lustfully. Then, she lifted her hips, trailing her dripping pussy down his torso, and positioned herself above his thick shaft.

Squelch.

Her hot, slick valley wrapped around his cock, pressing it snug between her fleshy butt cheeks.

“Gulp…”

As she rocked her hips back and forth, teasing his cock with her juicy ass, she turned and whispered seductively:

“Jaejun… Do you like having your cock wedged between the big hips you’ve been staring at all day?”

“N-ngh!...”

Squelch, squelch, squelch.

With every roll of her hips, the friction drove him closer to the edge. The wet slap of their bodies filled the imaginary room.

“Haaang… Jaejun, your cock is so thick, it’s going to slip out of my hips… put it in my pussy so it can’t escape…”

Sploosh! Thud, thud, thud...

Just as the Captain in his fantasy began lowering herself onto his cock, the real Jaejun couldn’t hold back any longer. His cock spasmed and shot thick ropes of hot cum across his chest and stomach.

As the pleasure faded and clarity returned, a single thought entered his head:

‘Damn... I should’ve taken that thong when I had the chance…’

After that electrifying first day at the XXX Artillery Battalion, the days that followed turned into a whirlwind of nonstop work.

Captain Lee Seona’s teaching philosophy was simple: “Learn by doing.” And so, Jaejun quickly found himself immersed in daily duties, dealing with everything from training schedules to admin paperwork.

Tasks he once assumed were exaggerated horror stories turned out to be completely real. Every day felt like overtime, especially with the sheer volume of clerical work.

At times, he questioned if he was an artillery officer or just an overworked administrative staffer.

‘Those bastards at the Ministry of Defense… was this some kind of job scam?’

Tap, tap, tap.

At that moment, Jaejun was buried in Excel sheets, working on the battery’s weekend and Monday operational plan. Luckily, his predecessor had left a comprehensive handover file, and Master Sergeant Go Suyeon—who sat beside him—offered plenty of guidance.

Just as he finished up, someone called his name from the entrance of the admin office.

“Jaejun.”

There was only one person who called him so casually.

He looked up and, sure enough, saw Captain Lee Seona standing there. As usual, she wore tight dark gray leggings that accentuated her voluptuous lower body and a thin windbreaker.

Smiling faintly, he replied, “Yes, ma’am.”

“It’s Friday, so the soldiers have self-directed PT. Let’s go work out right away. Get changed and come down.”

“Yes, understood. I’ll change and come right down.”

As she walked off toward the gym, Jaejun moved to the small storage room behind the admin office. Changing in the first-floor restroom was a hassle, so he’d been using this room instead since yesterday.

Creak, click.

Inside, he stripped and quickly put on a special item: a thick rubber band.

Slip, slide, snap.

It wrapped tightly around his cock, holding the 14.6cm-long soft member flat against his body. It was his secret weapon—his way of keeping his huge cock under control during workouts with the overwhelmingly sexy Captain Lee.

‘Yeah, with this, I don’t have to worry about getting hard.’

As expected, the workout ended with just enough stimulation to make him twitchy. As Captain Lee zipped up her windbreaker and spoke again, his heart jumped.

“Jaejun, your welcome dinner is tonight, right?”

“Yes, I know.”

“We’ll go together in my car. Be at the parking lot by 6 p.m. Or… do you want to leave straight from the unit with me?”

“I’ll leave from the unit with you, ma’am.”

“Okay. Let’s go up, finish up, and head out.”

She led the way back, her massive hips swaying hypnotically. Jaejun, who hadn’t touched those 42-inch curves since Monday, couldn’t help but fixate on them again.

Squelch.

His cock pressed hard against the inside of his shorts, already leaking precum. He kept watching as she ascended the stairs, imprinting the shape of her ass into his mind.

After wrapping up remaining work, Jaejun took a rare moment to rest. Next to him, Master Sergeant Go Suyeon—again wearing the duty officer’s armband—smacked her lips in disappointment.

“Master Sergeant, I wanted to eat with you tonight…”

“Yeah, me too. But the personnel officer got sick. Let’s eat together next time.”

“Definitely.”

While chatting with her, imagining how she might look in civilian clothes with a tipsy smile, the battery commander’s voice rang out.

“Officers, let’s go. Jaejun, come to my car.”

The officers filed out, and before long, they arrived at the restaurant. The meat sizzled, drinks poured, and the mood grew lively.

Though still new, Jaejun found it easy to joke with the gunnery officer and fire direction officers—especially since most of them were attractive women and around his age.

But just as the fun was peaking, Captain Lee’s phone rang.

Ding ding-ding ding.

Her expression shifted as she answered, and the entire table fell silent.

“Yes, this is the battery commander… Ah… understood. I’ll head back now.”

She lowered the phone with a sigh.

“The higher headquarters is coming for an inspection. I’ll have to go back now… You all enjoy the dinner—I’ll cover the bill before I leave.”

The party mood popped like a balloon. But before she could leave, Jaejun stepped in.

“Ma’am, I’ll go back with you.”

At first, she refused gently, clearly pleased by his offer, but eventually accepted.

The other officers, not wanting to stay without their battery commander and guest of honor, decided to wrap things up too.

After calling for a driver and returning to their apartments, Jaejun and the battery commander walked to the barracks.

He grumbled internally about the timing of the inspection—until he walked into the command post and saw who was waiting.

“Oh, 3rd Battery Commander, you’re here?”

Lieutenant Colonel Park Yumi, the battalion commander, sat at the center table.

And in that moment, Jaejun’s mood shifted completely.

‘Actually, this might not be so bad after all…’

To be continued...