Harry (42) was working overtime at the company office.
While organizing documents on his desk, his phone suddenly vibrated, making his heart skip a beat.
It was Mike — the younger brother he had been close to since childhood, but who had been out of contact for a long time after joining the military.
[Bro, I got a long leave. Are you free tonight?]
Harry jumped up from his seat.
He couldn’t hide the excitement and anticipation of seeing his brother after so long. He quickly gathered his things, grabbed his jacket, and rushed out. He nearly tripped while running down the hallway, but he didn’t care. His chest swelled with overwhelming emotion at the thought of finally meeting his brother again after such a long time.
When he arrived at the café near the airport, Mike was already there.
“…Mike?”
Harry was at a loss for words.
The man standing in front of him was unrecognizable from the old Mike.
At 198cm tall and over 380kg of pure muscle, he was an overwhelming hyper-muscled giant. His military uniform looked like it was about to burst at the chest and shoulders, and the massive bulge in the front of his pants was impossible to ignore.
Mike smiled softly and raised his hand.
“Bro… it’s been a while.”
The two moved to a nearby bar.
As soon as the drinks and food arrived, Harry asked carefully.
“What on earth happened to you? What went on in the military?”
Mike set his glass down and slowly began to recall the past.
---
*Flashback*
On the day Mike enlisted, he was still a skinny, ordinary young man.
174cm tall and weighing only 65kg, he looked slim even in his uniform.
All the new recruits gathered in the large auditorium.
Captain Reynolds stepped onto the stage — a man in his mid-60s with white hair and a full white beard.
But his physique was far beyond that of any young soldier. His uniform shirt was stretched tight over his enormous chest and shoulders, and his arms were thicker than most men’s thighs. The front of his pants bulged obscenely, the outline of his massive cock clearly visible all the way down to his knees. He was a true “legend” — a monster of muscle and stamina that defied his age.
Mike’s eyes widened in shock the moment he saw him.
‘Is… is that even human? How can someone have a body like that…?’
Captain Reynolds grabbed the microphone and spoke in a deep, powerful voice.
“Welcome to this unit.
You are proud soldiers. Since you volunteered to enlist, I truly respect and honor your choice.”
He paused for a moment, then his expression became serious.
“Recently, a highly contagious new disease has broken out.
Following orders from the Ministry of Defense, all personnel will receive a special preventive injection.
This injection is a measure to prevent harm to your fellow soldiers and those around you.
You must receive it once a week.”
Mike rolled up his sleeve and received the injection that day.
And the changes came quickly.
For the first two weeks, he endured mostly through extreme masturbation.
Every night, moans echoed from every stall in the bathroom.
“Ugh… Fuck… It’s hard again…”
“Haa… Haa… I can’t hold it…”
By the one-month mark, the physical changes became obvious.
Most soldiers had grown to 90–120kg with cocks reaching 30–50cm. In the shower room, they began touching each other under the guise of jokes.
“Hey, look at this guy’s ass. It’s gotten so fucking nice.”
“Sir, yours has really grown, huh?”
They would casually brush against each other’s cocks or squeeze their enlarged asses, but their eyes were already filled with lust.
By the two-month mark, things became completely explicit.
In the bathrooms, shower rooms, behind the barracks walls, and in secluded storage rooms, the soldiers began openly exploring each other after training.
“Ugh…! It’s too big…! But… it feels so good…!”
“Fuck, your hole is so damn good now. Squeeze tighter!”
“Haa… Haa… Destroy my ass… with that huge cock…!”
“You like it? Want me to fuck you harder? Your insides are gripping me so tight I’m going crazy!”
By the six-month mark, the soldiers had completely left the realm of ordinary humans.
Most had surpassed 300kg, and many had cocks over a meter long.
Mike himself had grown into a 380kg hyper-muscled giant.
That was when Mike got his own dedicated sex partner — Ryan from the same company.
The two no longer cared about time or place and satisfied their desires whenever they wanted.
Today was the day Mike was getting fucked.
Mike had already jerked off several times before entering the storage room behind the barracks. The floor was slippery with the cum he had spilled.
The moment he saw Ryan, Ryan smiled and approached.
Ryan pushed Mike against the wall and slammed his massive cock deep inside him in one thrust.
*Thrust! Thrust! Thrust!*
“Aaahhh…!! Ryan… fuck me harder today…!”
“Mike, your hole is insanely tight again… feels so good?”
Ryan gripped Mike’s waist with both hands and pounded like a beast.
Mike’s enormous 380kg chest bounced wildly, and his own cock stood like a steel rod, spraying cum.
The storage room was filled with their moans and the sound of flesh slapping.
“Deeper…! Destroy my insides…!!”
That day too, Mike was filled to the brim with Ryan’s cum and wore a satisfied expression.
After that, three more years passed.
Mike had become an overwhelmingly muscular giant, forged through intense training and operations, and now stood here.
---
Mike set his glass down and looked at Harry.
He only explained what his brother could understand, without mentioning the wild sexual life or the secret acts within the unit.
But just thinking about his comrades for a moment made precum leak from the front of his pants.
‘I need to drain this soon…’
Mike muttered to himself, then a thought crossed his mind.
He leaned closer to Harry, turning his glass slightly, and spoke in a low, gentle voice.
“Bro… want another drink?”
Harry looked into his brother’s eyes and felt a strong intuition — tonight was going to be very long.
(Part 1 End)