The Army
One week after enlisting, I regretted it every single day.
The training was worse than anything I had imagined. Waking before dawn, distance runs, conditioning drills, forced marches. Even a few minutes of sitting down felt like a luxury. And I was dead last every single time. During runs I trailed at the very back, wheezing; during push-ups my arms would give out halfway and I'd collapse face-first into the dirt. On marches, blisters split open across the soles of my feet and I limped along the whole way. Every time the drill instructor called my name, I could hear him sighing.
"Trainee Kang Do-yoon, dead last again."
My fellow trainees muttered whenever they looked at me.
"Why did that fatass even come to the army?"
"Because of him, our platoon comes in last every damn time!"
Some of them laughed at me openly. But I refused to give up. I fell, and I got back up. I entered as the worst of the worst, but I finished every exercise to the end. Even if it took me twice or three times longer than everyone else, I didn't quit.
Don't run away. You can do this.
It was the first promise I'd ever made to myself in this life, and I wanted to keep it. So I endured five weeks.
On the day of unit assignment, my name was called last. The instructor glanced down at his paperwork and said only a few short words.
"…Trainee, you're assigned to the ○○ Division."
I nodded silently and gathered my things. As I stepped out of the training center's main gate, I looked up at the sky once. My body was still weak, my breathing still ragged — but at the very least, I hadn't run away.
And not long after I arrived at my new unit, I would meet my direct senior.
When I opened the door to the barracks, the man sitting on the bed looked up. He seemed a little taller than me, and the muscles beneath his sleeveless shirt stood out in sharp relief. Broad shoulders, thick arms, a chiseled jawline. His gaze was direct and utterly unafraid. A textbook high-testosterone alpha, they said — a former civilian gym trainer. He looked me up and down slowly, and the corner of his mouth lifted.
"New recruit, huh?"
"Private Kang Do-yoon!"
He was Private First Class Kang Hyun-woo. He shared my surname.
He rose from the bed and came toward me, and the sight of him looking down at me from that close distance was strangely overwhelming.
"Whoa… you're really soft, aren't you."
He tapped my arm with his hand and prodded my stomach with a finger.
"Nice and squishy too. Man, you're prime raw material."
I instinctively took a step back. For a moment, I genuinely wondered if he was gay. Completely unaware of what I was thinking, he only looked even more excited.
"Damn… this is gonna be fun. It's been ages since I got one like this. If I train you from scratch… I bet you'd turn out pretty damn good."
He gripped my shoulders hard and grinned.
"Hey, recruit. You think you can survive army life with that body? Come with me. From today on, I'm teaching you myself."
"Y-yes, sir! Understood…!"
He led me to the unit fitness center. It was only much later that I learned the full story: the unit I'd been assigned to was a rear-echelon posting deep in the mountains, and with so few men in the squad, my direct senior — despite being only a Private First Class — was effectively treated like a Corporal. Which meant the gym, too, was more or less at his personal disposal, rank be damned.
Kang Hyun-woo pushed open the gym door, planted me in front of the mirror, and looked down at me with his arms crossed.
"Let's start with the basics. If you try benching in that state, you'll die on the spot."
At first, it was pure hell. But I never refused. I copied every exercise he did, exactly. Bench press. Squat. Deadlift. Even on rest days, I choked down protein, buying supplements and force-feeding myself.
When I made Private First Class, nothing changed. While the others fiddled with their phones or slept, I was in the gym with my senior. And so a year passed.
My body was already transforming into something healthy — but my mind wasn't. A raised voice still made me flinch. Whenever someone called my name, I tensed up for no reason. The old wounds didn't fade easily.
By the time I made Corporal, my body had completely changed. The man in the mirror was a stranger. Shoulders grown wide, abs carved in deep ridges, arms and legs thickened with muscle. As the fat melted away, my features came alive, my jawline sharpened, and even my face had turned into something girls would call handsome. The 108-kilogram pig I used to be was nowhere to be found.
Then one day, I was summoned to the First Company admin office. When I opened the door, the female officer seated inside looked up. First Lieutenant Oh Se-rin — a female officer transferred in from another unit just days before. She'd barely been at the base a week, but the rumors among the soldiers were already rampant.
"That lieutenant, apparently back at her old unit she only ever picked out the handsome soldiers to eat."
"They say her nickname was Succubus… for real."
"Face like that, and a body that's straight-up insane. S-line, and they say just looking at her thighs gets you rock hard."
And in truth, she looked exactly like the rumors. A cold beauty with deep black hair tied in a high ponytail and monolid eyes, aloof and expressionless — with red lips that were provocatively vivid. Even under her uniform blouse, her voluptuous chest and narrow waist were unmistakable, along with a tightly sculpted S-line hips and long, smooth legs.
The moment Lieutenant Oh Se-rin saw me, her eyes flicked up and down my body. At first her gaze was indifferent, but after taking in my shoulders, my chest, my waist, her eyes narrowed slightly. The corners of her lips curved, just barely.
"Loyalty, ma'am!"
"…Corporal Kang Do-yoon?"
"Yes. Corporal Kang Do-yoon."
Even as she flipped through her paperwork, she kept glancing at me sideways. I could distinctly feel her eyes return again and again to the front of my trousers and the line of my hips.
"Sit."
"Yes, ma'am."
From that moment on, her gaze found me often. That was how I first met Lieutenant Oh Se-rin.
Time flew. Late in my Corporal year, Ranger training began. I was climbing a mountain in full combat gear when my foot twisted on a slippery rock.
"Ghk…!"
My ankle sprained badly. Unable to bear the weight, I collapsed right where I stood. Squad members came running from all around, but the first one to reach me was Lieutenant Oh Se-rin. She threw my arm over her shoulder and, without a word, began helping me along.
"Can you walk? Let's get you to the medic barracks first."
"Ungh…! Yes, ma'am, I'll manage…"
My ankle throbbed so badly I could barely put one foot in front of the other. Her full breasts kept pressing against my side, and every time her breath touched my ear, my body tensed up, inexplicably.
By the time we reached the medic barracks — it being Ranger week — the place was already packed with injured soldiers. The medics' hands flew nonstop, too busy patching up other men to even look at us. Lieutenant Oh Se-rin surveyed the scene for a moment, then took my arm again.
"…This won't do. We're going to my quarters."
"Yes… understood, ma'am. Ungh…"
Lieutenant Oh Se-rin's private quarters were quiet. She sat me down on the bed, carefully removed my combat boots, and examined my ankle.
"It's swollen quite a bit…"
Cold words, but her rough hands were gentle. As she applied antiseptic and slowly wound the bandage, I couldn't help stealing glances at her face. Up close, she was even more beautiful. The red lips hidden beneath that icy expression, the long lashes, the nape of her neck shifting faintly with each breath. And…
When I looked down, her deep cleavage showed between the gap of her uniform. White skin rippling with every breath, and through that crevice, the edge of a black sports bra peeked out. I tried reflexively to look away, but my body was already reacting with brutal honesty. Inside my pants, my cock twitched and began to swell. The fabric was visibly bulging upward.
Lieutenant Oh Se-rin's hands stopped as she secured the bandage, and her gaze slid slowly down to my crotch.
"…Corporal."
Her voice was low. She paused, staring at that bulge for a long moment, then slowly raised her head. Her eyes had changed completely. In those once-cold pupils, deep curiosity had seeped in — and something darker, thicker.
"This part… isn't injured, is it?"
Before I could answer, her hand came down over my trousers. She pressed the bulge lightly with her palm, and the corner of her mouth curled.
Ziiip—
The zipper came down, and my underwear was dragged to my knees. In an instant, a thick, hot cock sprang out into the open air.
Thwop.
It was nothing like the pathetic little thing from my days as a 108-kilogram pig, buried in fat and barely two knuckles' worth of visible length. What stood there now was a massive cock well over fifteen centimeters, veins prominent along the shaft, the head taut and glossy-smooth. The arousal left the glans flushed crimson and glistening slightly with wetness.
Lieutenant Oh Se-rin's eyes went wide.
"……Wow."
For a moment, she was speechless. Her astonished gaze traveled up and down my cock, and then she reached out carefully and wrapped her fingers around it. It was hot. So thick that her slender fingers couldn't close all the way around it.
"Hahh…"
She let out a small breath. I blurted out in a panic.
"L-Lieutenant… that place… it might, um… smell…"
But it was too late. The instant she heard me, she bowed her head and brushed the tip of her lips against the head of my cock.
"Haahp……"
Then, slowly — very slowly — she parted her lips and began to swallow it. The warm, damp sensation enveloped my glans and slid deeper and deeper.
"Ungh…!"
My hips jerked back on reflex. She looked up at me with my cock still caught between her lips. The face of a cold beauty had transformed into something impossibly lovely — and utterly obscene.
Pop.
She let it slip free, a long strand of saliva trailing lewdly from her lips, and whispered.
"It's fine…… it smells like a man."
Then she swallowed it deep again.
Haahp. Shlurp, shlurrp.
Her tongue lapped hungrily at the sensitive spot just beneath my glans.
She took me in until I was near the back of her throat, then sucked hard, cheeks full of saliva, rolling her tongue around the head over and over. I had no idea what to do with my hands.
"Nngh!"
I grabbed fistfuls of the bedsheet and clenched my jaw, swallowing my moans. A lifelong virgin — I'd only ever used my own hand, and a woman's mouth was hotter, softer, and tighter than anything I'd imagined. It was overwhelming. My mind went white.
Not even five minutes inside her mouth, and my hips shuddered hard.
"Lieutenant…! I'm… I'm gonna—"
Before the words even finished, my cum erupted like a bomb.
Spuurt—! Spuuurt——!
Hot semen slammed directly into her throat. The thick, fishy fluid struck the back of her mouth, and Lieutenant Oh Se-rin's whole body flinched.
"Mmph…!"
She gagged, her brow creasing. Vivid tears welled at the corners of her eyes and slid slowly down along her lashes. But she didn't pull away. Bobbing her throat up and down, she forced herself to swallow the cum filling her mouth.
Gulp… gulp…
The sound of salty semen sliding down her esophagus rang out clearly in the quiet quarters. Eyes half-closed, tears and spit trailing down her face, she swallowed every last drop. When she finally pulled her mouth free, a thin white strand of cum stretched between her lips and my glans. She wiped her mouth with her thumb, then licked it clean with her tongue — a sight so obscenely lewd it was nothing like the cold beauty from before.
"Hahh…… already?"
A flicker of disappointment crossed her face.
"Don't tell me… that was your first time?"
Feeling my face burn, I managed a nod. Lieutenant Oh Se-rin stared at me for a moment, then slowly curled her lips upward — as if I were adorable, or perhaps as if I'd become even more interesting.
She straightened up and pressed a light kiss to my lips.
Mwah.
"You're cute, Corporal. Then… from now on, I'll teach you everything. From the very beginning."
It was less a promise than a declaration. I couldn't believe it. A virgin for life like me… getting his cock sucked by a woman, in the army…
This life was, without question, turning out very different from the last.