The test subjects - Part 2 added 26 June 2022

[Azerreza]

Here is finally the second part! First of all I would REALLY like to thank those who gave me their opinion on part 2 and a BIG, VERY BIG special thanks to @FallenAway because this poor guy volunteered to correct part 2 and also part 1 (and not being a native English speaker, I think there were a lot of mistakes...). So feel free to reread part 1 which should probably be much more enjoyable to read now (and I think that the 2 parts combined, it can increase your enjoyment)

In any case, I really hope you'll enjoy as much as you expected! As usual, Don't hesitate to tell your feedback on this part (I tried to do hotter than the first part, as you know I like stories where it goes crescendo so I really hope this will be the case!)

"Enjoy" your reading!
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 What? What did he just say? I... I'm the next test subject?

I was stunned by the news. I was the next test subject?

"Hahaha! You look surprised!" said Leo.

Surprised didn't capture it. They really just proposed that I be the next test subject?

"Of course, we can't force you," said the doctor.

For a moment I wanted to refuse. Then I looked at Leo, I saw his titanic muscular body, saw those traps that looked like rocky mountains, looked at those arms that could lift a tank, watched his wall of titanium muscle move in and out with each breath, saw those huge legs that I could hide behind and that made him so fast that he caught up with a car. Oh my god, this awesome display was enough to make me hard as hell! This is what they offered: to become a force of nature. I would to be crazy to refuse this opportunity.

"N-No, it's okay, I... I accept. It's just, I didn't expect this."

"You can thank Leo. He insisted that you be the next subject," said Krakovski.

Leo? And then it came back to me that he had wanted to talk with the doctor alone.

"Leo? So... that's why you wanted to talk with the doc?" I asked to my huge boyfriend.

"Hehehe, yes! I'm so excited to see the result!"

It was hard to imagine that before long I would be like Leo, a fucking muscular titan with inhuman strength.

"And then, we can do some things," added Leo.

I blushed a bit, understanding what he meant. It was true that if we had tried that he would have just crushed me like an egg.

"So, doc... I imagine I need to pass some tests?"

"It's not really necessary. You've passed them recently, I don't think anything has changed," replied Krakovski.

Suddenly, I heard the container's glass front open.

"You can undress. Keep your underwear if you want, but I think it will be too small."

"What? You mean we're going to do it right now?" I asked, surprised.

"Yeah, why not? Is there a problem?"

"N-No... it's just that everything is going so... fast."

I looked at myself as I undressed. This body... this is the last time I will see this body.

"Hahaha you're so cute," laughed Leo, making me blush a bit. "But in a few minutes, you'll be fucking HOT!" he said, almost licking his lips.

I still had a hard time getting used to it: I was the next subject, and I was going to experience the same thing as Leo. It was so... so unreal! Like I was dreaming, and I was going to wake up any minute. Was I doing the right thing? My life was about to change forever. I didn't plan that. Did I want it really? Again, I looked at Leo... Fuck, Ryan! Of course you want it! You couldn't dream of a better offer!

"Well Ryan, you can take your place in the tank. We will finish the preparations and launch the experiment."

My heart was beating faster and faster as I walked towards the tank. It was bigger than the one used yesterday, maybe around 18 feet tall, probably to avoid breaking. I felt so small and it seemed so unreal that in a few minutes I'd be double my size. Several colleagues started attaching a bunch of cables and electrodes, and obviously an oxygen mask.

"Vital functions?" asked Krakovski.

"Everything seems to be fine, Sir."

"Very well, launch the recording and fill the tank."

"Yes, Sir!"

I watched the glass front go up until I was completely locked in. Then there were engine noises and I felt water at my feet. The water was hot, but pleasant. Quickly the level rose, reaching my knees, then my crotch, then my shoulders, and a few moments later I was totally immersed. It continued to fill the tank entirely. Here I was, floating in the middle of this huge glass tank, sounds stifled so I could only hear my own breathing.

Then I heard a voice: "Ryan, can you hear me? Are you okay? You can speak, your mask has a microphone," said the doc.

"Y-yeah," I said. I was fine but I could feel my heart beating faster and faster.

"Checking?" asked Krakovski.

"His heart rate has increased, but otherwise everything is okay."

"Okay Ryan, don't worry. Everything is going to be fine."

“Don't worry, don't worry! Doc, it's not you who are about to be transformed into a 12 foot titan. It's hard to not worry under these conditions."

"Well, are you ready?"

I don't think I've ever been so stressed by a question. I had always dreamed about this but never thought that one day it would happen. And that one day was NOW!

"Yes," I replied, a bit anxious.

"Perfect! Launch phase 1."

Here we go! I heard an engine noise, and I felt the water bubbling. Fuck, it's coming, it's fucking coming! But surprisingly, nothing felt different.

"Doc, I don't know if it's normal, but I feel nothing," I said, a bit worried.

"Calm down Ryan, it's normal, the serum has not yet been injected into the tank. For the moment it's just bubbling water."

"Sir, the pumping is finished so we can continue," said one of assistants.

"Perfect! Inject the serum in 3... 2... 1..."

When the countdown reached zero, I felt it instantly. It started with a slight tingling but quickly intensified. My body automatically contracted. It was a bit like those electro-stimulators but on my whole body, and it was increasing. It was weird, as if I wasn't the master of my own body anymore. The tingling quickly became a burning. Oh my god! My body was flexed harder than ever before, and it continued! I hadn't noticed, but the water was starting to take on a slight bluish tint. This time there was no doubt, the experiment had really started!

"Are you okay Ryan?" asked the Doc.

I instinctively replied with a long, "Fuuuuuuuck yeah!" because that was all I was thinking at the time. It had just started, and it was already insane! My whole body was flexed to maximum and beyond, and I could feel it, I could feel my muscles pushing against my skin, I could feel them swelling, hardening. Oh shit, it was awesome and...!!! OH FUCK! The intensity had just increased again! Fuck! It was fucking intense!!! I began to moan, grunting with pleasure as I felt my body growing faster, stronger: my traps were emerging from my thickening neck, my shoulders were rounding, my biceps were exploding with mass, my hands were growing, my pecs were bulging! I passed my hand over my midsection and felt six boulders swelling while the crevices between were deepening. My back was widening, pushing my arms further out, and my legs were growing, thickening.  Not to mention my package, which in addition to becoming fucking hard, was also growing more and more.

I was growing more, and more, and more, AND MORE! DAMN!!! "AAAAAAAHHHHH! Oh shit! Oh, my fucking god! GNNNNNNHHHHHHHH!!! OH SHIT! OH FUCK! GOOD! SOOOOO GOOOOOOD!!!"

I felt like crying. It was extremely intense but at the same time so fucking GOOD!

Then the bubbling of the water calmed down and my breathing became calmer. Was it already over?

I had not yet looked down to see the results, but I already felt different. I slowly moved my hand towards my chest, excited and terrified by what I might feel. My hand touched my skin... Oh...my...GOD! OH, MY FUCKING GOD! I already had a muscular body, but not like a fitness model. Now it was on a whole new level... hard muscles everywhere! I felt big muscular pecs, ripped hard abs, a carved Adonis belt. Wow, I felt like the men I fantasized about!

"Sir, we reached 20%," said one of the assistants.

Oh fuck, we were only at 20%! 20 fucking percent!!! And I was already in ecstasy!

"Well, how do you feel Ryan?" asked the Doc.

"Fucking great!" I replied. I could hear my voice was deeper. I hadn't looked at my body, but I could feel that I was very muscular. Everything felt so strong, so powerful. And I knew it was far from over.

"My god Ryan, you're so beautiful!" said Leo. I couldn't help but laugh a bit.

"Well Ryan, can we push it to 50%?" asked the Doc.

I wanted to answer, "You can push it to 100%!" but something told me I wasn't ready for that. "Let's go for 50%!" I said eagerly.

"Okay, increase it to 50%," replied the Doc.

The tank began to bubble even more, and suddenly the water was bluer. I was right - I wasn't ready, not REALLY ready. I felt it again, the tingling, except that this time it was faster and MUCH MORE intense!!! My body contracted even more, far beyond what I could have imagined. "OH SHIT! AAAAAAAAAAHHHHHHHHHH!!!" I moaned, surprised by the intensity.

Quickly it became almost unbearable. “Oh fuck! Oh my freaking god!!!" Yeah, I wasn't ready, and I don't think anyone could be ready for that! My body continued to grow, more, much more! My eyes rolled back in their sockets, my whole body tensed up, and I was shaking.

"AAAAAAAARRRRRGGGGGHHHHHHH! OH MY GOD! AAAAAAAAAAAAAAAAAHHHHHHHH! FUCK, YEAH! MORE! I WANT GGGNNNNNNHHHHHHHH MORE!!!"

More... yeah, more! That was all I could think about at the time. It was incredibly intense, but I fucking loved It! I felt each muscle swelling, growing hard as fuck. I felt the power running through my veins. My heart was beating faster, stronger. I felt my muscles pushing against my skin, stretching it. The feeling was indescribable! Intense euphoria... Fuck! I swore, shouted, and screamed with pleasure.

"AAAAAAAAAAARRRRRRRRRRGGGGGGGGGGHHHHHHHHH!!!! FUUUUUUUCKKKKK!!! AAAAAAAAAAAAAAHHHHHHHH!!! MORE! YES MORE! MOOOOOOOAAAAAAAAAAARRRRRR!!!"

All rational thought was lost in this vortex of intensity. I only felt the muscle growth, this AWESOME muscle growth!!! It reminded me of those scenes from cartoons where a puny being becomes a muscle freak. Well, that puny being was me today, and soon I would be as muscular and strong as the Hulk! And it felt much better than any cartoon! It was intensely powerful! It was a dream come true!

God, I wanted to feel my muscles getting enormous, to feel them swelling and hardening. It was the best experience of my life and I wanted to enjoy it! With some difficulty I moved my trembling hand and placed it on my chest... Oh my FREAKING GOD!! A few minutes ago, I felt like a fitness model in the best shape of his life, but now I felt more like a pro bodybuilder preparing for Mr. Olympia. I was HUGE! My pecs were fucking BIG, popping out several inches from my chest. I could feel the muscles growing! My nipples were pushed down and became hard and very sensitive.

I had not yet touched my midsection, but I could already feel my abs like never before. I could feel them moving in and out when I breathed, like a stone wall bulging under my skin. I felt them pushing against each other and I wasn't even contracting them! They were fighting among themselves to occupy the same space. My suspicions were confirmed when my hand reached my midsection: it was... AWESOME!!! Six boulders bigger than my fist, harder than granite, with deep ravines between them. I was already drooling over the abs of fitness models who I thought were perfect, but mine were incredibly better. And the best part was that they were still growing! I felt them swell under my fingers, hardening more and more!

I flexed my biceps and... HOLY SHIT!! Look at that gun! LOOK AT THIS FUCKING GUN! I never thought I would have such a muscular arm. It was HUGE!!! My freaking biceps were as big as Ronnie Coleman's! Oh god!!! With each heartbeat I felt power running through my veins. I felt my back thickening, my lats widening, pushing my enormous arms out even further. All these muscles, all this power made me feel terrible horny!

My dick, which was thicker than a beer can, stood up more and more. My extra-stretchable boxers were trying to contain the monster, but they were losing the fight as they got more and more stretched. The friction of the head against the fabric gave me huge waves of pure pleasure!

It wasn't just the top of my body that was hulking out; the bottom was growing the same way. I could feel my quads flexed to their maximum while muscle hills popped up out of nowhere. I heard the agonizing sound of my boxers not being able to contain my freaking legs anymore. It was so fucking awesome!  And I knew it wasn't over. I wanted more, much more!!

"OH MY GOD!!! AAAAAAAAAAAAAARRRRRRRRRGGGGGGGHHHHHHH!!! MORE!!! OH YES, PLEASE, MORE!!!"

I don't know if the Doc heard me or not, but my wish was granted.  I felt every part of my body explode, adding hundreds of pounds of muscle. My traps, my shoulders, my arms, my pecs, my abs, my back, my legs, my dick: they all exploded and were becoming bigger and bigger and BIGGER!

"AAAAAAAAAAAAAAAAAAARRRRRRRRRRRRRRRRRRRRRRRRRGGGGGGGGGGGGHHHHHHHHHHHHHHHHHHHH!!!!!!!"

My boxers were torn to pieces, releasing my freaking cock so it knocked against my abs. It was about to spit white fluid everywhere when the bubbling calmed down. I had not yet caressed my body, but I felt like I had exceeded what was humanly possible. All of it was absolutely UNBELIEVABLE! It was even more intense than a few minutes ago. Even the simple act of breathing had become orgasmic! I was a fucking freak, a freaking GOD! I must have been close to 8 feet! My six-pack evolved into an enormous eight-pack and felt like my abs could stop a car. My arms felt like I could lift and easily crush that car! My legs felt capable of crushing the car into a metal ball!! Yeah, I was a freak! One of the most powerful freaks in the world. A fucking living Hulk, but without the green skin. And it wasn't over! I was still barely two-thirds of Leo's size.

"We reached 50%," said the Doc. "Ryan, how do you feel?"

"Fucking great!" was the only thing I could say. The feeling was so…so good!

"Oh, Ryan, you're so...so... AWESOME!" stammered Leo, probably forgetting that he was 4 feet taller and several tons heavier than me! But... I agreed with him: I was so AWESOME!

"I can guess your answer, but I must ask you: do you want to continue Ryan?"

Haha! He needs to ask? It was obvious! Even if I was a bit apprehensive about the final phase, the difference between the first phase and the second was huge. I couldn't begin to imagine the comparison between the second and the last phase. I was still far from Leo's level, so it was out of the question to stop here.

"Hahaha, of course we continue, Doc!" I was excited.

"I knew you would say that, but it will not be pleasant," he said.

“You're wrong Doc, it's the opposite: it's ONLY PLEASURE! Go ahead and push it to the maximum!"

"Are you sure?" he asked.

“Fuck yeah, Doc, of course I'm sure!"

He seemed to hesitate but finally said "Okay... maximum power."

The bubbling resumed, but stronger, and suddenly...

God... Oh god... OH MY FUCKING GOD! If the first time felt like a burn and the second like a thunderbolt, now it was as if my body had been dipped in molten lava. I thought I had already felt the strongest sensation of my life... HA! I was so far from it! My back arched to the point of breaking my spine if it had not been so muscular. My fists were clenched to the max, my toes folded, my eyes rolled all the way back, leaving only the whites. I was convulsing like never before. I wanted to yell, but my body was so cramped that I could only emit loud guttural noises. The Doc was right: it was not pleasant. It was SO MUCH FUCKING MORE THAN THAT!!!

My muscles were swelling at an incredibly fast pace! I could clearly hear them stretching! Each heartbeat was like a sledgehammer blow. My strength doubled, tripled, quadrupled in a few seconds. I thought it couldn't get worse, but suddenly I felt an internal pressure building quickly, very quickly! I was going to explode! I was about to be transformed!

"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAARRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH!!!!!!!!!!!!!!"

I'm surprised I didn't pass out. Nothing could have prepared me for this, nothing. Incredible would be a weak word to describe what I felt. My whole frame exploded at the same time, adding probably several hundred pounds of pure muscle ALL AT ONCE! My neck was engulfed by my traps, my shoulders exploded to insane dimensions, my arms blew up much bigger than my head and the main vein was as big as a pipe! My fingers were tense as hell, impossible to bend them, I felt them stretching, swelling. My pecs expanded to the point of blocking my view and I could feel their enormous weight. One of them would be as heavy as my whole body was previously. My eight-pack was swelling more and more AND MORE until I finally roared as hell when I felt them exploded again, evolving probably into a ten-pack but I was unable to move my hands to confirm, but I felt each brick doubling in size and becoming harder than diamond. My back widened to the point where it would be impossible for me to pass through any door without destroying the wall. My quads grew so much that I could feel them rubbing against each other. My calves grew like they had been implanted with balloons.

Obviously, this was extremely stimulating. My dick grew harder than a hardened steel bar and fired like a cannon. The first load felt like a big wave of energy running through me, followed by another smaller "muscle-plosion," then another one like the second, and a third, a fourth. With each load I felt my body getting bigger and bigger AND BIGGER!!!

Shoot, yell, grow! Shoot, yell, grow! Shoot, yell, grow! I did it again and again and again!

I didn't notice it right away, but my feet hit the bottom of the tank! I was getting bigger and heavier, but above all, my muscle was too dense to float!

As with Leo, the blue water became very milky and soon it was impossible for me to see anything but white. It lasted for many minutes, the most intense minutes of my life up until then. Like Leo, I was expecting to blow up the tank from the inside, but this one had been adapted for my transformation. After twenty or thirty minutes, finally the calm returned.

"We arrived at the target. Vital signs are okay," said the assistant.

Here I was in this tank filled with serum, water and... cum. I couldn't see anything. But like the previous phase, I could feel it, feel the power. It was simply... inconceivable. I felt my abs flexing in and out of my midsection, feeling so hard that I could have broken a diamond on them. I felt the strength running through my arms, so much strength that I felt like I could lift a tank like Leo had. My legs felt powerful enough to be able to jump from the ground onto the roof of a building. My traps flexed when I turned my head. My back felt so hard that I could be shot without getting a scratch on me. I wanted to stroke myself furiously, but I needed to see the results for myself now that the experiment was over.

"Perfect! Empty the tank," said the Doc.

An engine was heard and the water level began to drop. I knew the experiment was a success when my eyes met Leo's and they were at the same height as mine. The other people looked more like children, half my size. The level continued to drop, revealing in turn my traps, shoulders, pecs, arms, abs, legs and obviously, my cock. I saw eyes widen, jaws drop, mouths open, and heard comments like, "Holy shit!" or "Fuuuuuuck!" Leo was panting and drooling. I could see some precum flowing down his dick that was obviously hard!

"Well, I didn't expect such a success," said the Doc, satisfied. "Open the tank." Slowly, the glass front went down.

"Have I been a good test subject?" I asked. Holy crap! My voice! Instantly I touched my Adam's apple, well... apple... hem, now it was more like a grapefruit. Shit, my voice was soooooo deep!

"Absolutely!" replied the Doc. Yeah, needless to say he was happy with the results! Me too!

"Oh my god Ryan you're so... so..." Leo was on the verge of cumming.

I took a step forward. OH FUCK! A wave of pleasure passed through me. The interaction between my muscles was AWESOME! I lifted my legs and felt their immense weight, felt the muscle hills flexing, felt my abs twisting, felt my pecs bouncing, felt my gigantic arms moving and causing my lats to flex, felt my traps flexing when I moved my head. Damn, every trivial movement was orgasmic!

Leo let out a small laugh. "It's surprising isn't it?" he said, guessing what I felt. "To be honest, I'm still not used to it."

Yeah I had to admit, this body was surprising… surprisingly fucking great! And I still hadn't seen the results! To be honest, I was looking forward to seeing myself.  "Doc, do you have a way to show me the results?"

"Obviously," he said. A few seconds later a big screen came down from the ceiling and was turned on.

I knew I was a titan. I knew it would be fucking impressive, but nothing could prepare me for this sight. Really, nothing!

"HOLY SHIT!!!" I shouted. I was HUGE... no, GIGANTIC... no... TITANIC! Yeah, titanic was the best word: traps that engulfed my neck just like they felt, the biggest shoulders I had ever seen, mountainous guns (literally), gigantic, striated pecs. I was right about my abs: it wasn't four, or six, or even eight bricks I had, but ten! TEN FUCKING HUGE, GIGANTIC, ENORMOUS BOULDERS! Holy shit, look those abs! They are bigger than a small head, this is INSANE! And I was also right that going through the doors would be difficult even if I turned myself. My legs... fuuuuuuuck… were they legs or FUCKING REDWOODS? And the best part: all I can say about this "part" is that it looked like a fucking python!!!

God, it was too good to be true! I expected to wake up in my bed, in my old body, my boxers creamed due to this wet dream. Like Leo, I got ultra horny in no time, and I was ready to explode!

"Hem hem, Ryan?" said the Doc clearing his throat, seeing that in a few seconds he would have to clean up a pool of cum in his lab.

"Yeah Doc?" I replied.

"Do you mind if we do the same tests as we did with Leo?"

"Obviously not! Do all tests you want."

"Very well," replied the Doc. Fifteen minutes later I found myself facing a T-42 tank. "We had to buy a new one. The previous one was somewhat compacted. Be careful with it."

Hehe, this was a funny situation because yesterday I was the one behind the glass. It was weird. I knew I could lift this monster but at same time, I couldn't help but think like my old self: Ryan, it's not just a barbell, it's a FUCKING TANK! Well, it's time to try. I placed my hands below it and... I lifted. I felt a little resistance, but nothing insurmountable.

"Doc... can you remind me of the weight?" I asked, still not wanting to believe what I was lifting: it was not a heavy barbell, it was not a car or even a truck, it was a FUCKING tank!

"Hmm, around 100 tons, I think."

One hundred tons? Fuck… 100 TONS! Damn, I was barely able to lift 200 pounds few hours ago and now, I was lifting 100 FUCKING TONS? HAHAHAHA AWESOME, ABSOLUTELY AWESOME! I could feel my libido increasing as hell! Crap, this power... THIS POWER! A naughty smile appeared on my face. I could do more than that. I WANTED to do more than that! It was time to test this incredible power! I grunted a bit as I began to lift it over my head.

The Doc sighed, understanding what I was about to do. "Ryan, do you know these tests will cost us a lot of money?"

"HAHAHAHAH YES YEEEESSS! LOOK AT ME, DOC! LOOK AT ME, LEO! THIS IS WHAT I CALL POWER!!!" I shouted. Damn, I almost didn't recognize myself but you don't know how good it is to feel this power flowing through you. It's impossible to hold me back, totally impossible!

AAAAAAAAAAAARRRRRRRRRGGGGGGGGGGHHHHHHHHHH!" I shouted as I started to compress the tank. Sounds of twisting metal filled the test room. The feeling was most enjoyable! Oh my freaking god. Breathing was orgasmic, walking was orgasmic, but this… this was on a whole other level. I understood perfectly what Leo felt yesterday and why he seemed so intoxicated. My dick was totally straight, ready to shoot. I had reached my limits, I had to explode and this is what happened the next moment."FUUUUUUUUUUCKKKKK YEEEEEEAAAAHHHHH!!!" I yelled. It was too much for my cock. I felt the white lava go up the 'volcano.' I heard the Doc sigh as he said, "Oh no, not that," before the volcano erupted.

"AAAAAAAAAAAAAAAAAAAAAAAARRRRRRRRRRRRRRRRRRRRRRRRRRRRGGGGGGGGGGGGGGGGGGHHHHHHHHHHHHHHHHHHHHHH!!!!!!!"

Holy crap, this wasn't an ejaculation, it was a fucking cannon shot!! I swear I heard a "BANG!" My loads struck the wall with such violence that they left holes. For more than 10 minutes it was an incessant deluge. Holy shit! A load like that would have taken my head off yesterday! When it was over, there was cum everywhere: on the ground, on the walls, on the ceiling. I had almost forgotten that I was still holding what had been a T-42 tank a few minutes ago. My hands automatically crushed the poor tank due the intensity of my ejaculation and turned it into a shapeless mass of twisted metal. Fuck, I loved this superhuman strength, these incredible muscles...  Fuck, I LOVED being a titan!

"So, Doc, is the test complete?" I asked, proud of my demonstration.

I heard the Doc sigh again. "Yes......... call for a cleaning crew. There will be several days of work."

"Sorry, I couldn't help myself," I said in laughing.

Needless to say the endurance test was also a success. I didn't know anyone could run that fast, and I could have done it for hours without getting tired, and the poor car's driver almost had a heart attack when I lifted the car with one hand.

The experiment was a success, an absolute success! I was fucking happy and obviously, Leo was too. We looked at each other and I knew we had the same idea: we were eager to be alone together.

"I think that will be enough for today. We'll probably have some more tests for you two tomorrow," said the Doc. We have prepared suitable rooms for both of you. At night there is an alarm system activated, so please avoid causing a disturbance."

"Don't worry Doc," I said with a wink at Leo.

Avoid a disturbance? Hahaha, sorry Doc, but my hormones are crying for satisfaction.

*A few hours later…*

Adapted rooms, my ass! As I expected, getting through a door was difficult. Ask the wall; it will long remember my shoulders. And my bed screamed in agony. They reinforced it with lots of strong metal bars, but I could hear them yell, "too heavy" whenever I moved! Ah yes, and... I'M 12 FUCKING FEET TALL!!! My legs hung way over the frame and my feet were on the floor!

But it didn't matter. There was something more interesting to do than sleeping, and it was time. I couldn't leave my room by the entrance without setting off the alarm. But Leo's room was right next door. I just had to make a new entrance!

I got up and approached the wall. "Leo?" Wow, I couldn't believe my voice was so loud now!

I heard him say, "Yeah?"

"I'm coming in," I said.

"What? But the doors are all closed, the alarm is activated, and there is no other wa.."

Before he could finish his sentence, I closed my fist and hit the wall: BAM!!

"WHAT THE???" I heard Leo's surprise, seeing the wall crack.

BAM... BAM... BAM, BAM, BAM!

After a few hits the wall cracked to the point of collapse, and one last hit created my entrance. "Here I am!" I said.

"DAMN! You could have warned me, man!" Leo sounded a bit angry.

"Haha, sorry but I was eager to see you, really eager!"

"Yeah, me too!"

There was a moment of silence. I looked at Leo, Leo looked at me. For a short time, we were like our skinny selves. I felt my heartbeat, except now it sounded like a subwoofer (and I swear I could hear Leo's.). Our breathing accelerated sharply. Hormones were taking over. We have been waiting for this moment since his growth. I threw myself at Leo and started to kiss him roughly. Leo embraced me and could finally hug me without being afraid of crushing me. I saw a tear flow down his cheek. He broke the kiss and said, "Oh my god, do you know how long I've waited for this moment?"

I smiled and we resumed our kissing. My hands were everywhere. I felt the muscle hills of his back, clutched his mountainous traps, caressed his gigantic pecs, pinched his nipples, walked the hills that were his abs, following the road that was the central crevice. His hands made the same journey on my god-like body. He felt my back, traps, shoulders, pecs, abs. It was so awesome! Then we reached our monstrous cocks. Precum oozed from them like never before.

Our sex was usually romantic and sweet, and I loved that about our sexual relationship. But now it was different, very different. I was hungry… no, more than hungry… starving! Yeah, totally starving. I wanted to plunge my dick into his ass and fuck him in the roughest and rawest way possible. It was not our habit, but it was what I wanted now, and I think he did too. While continuing our rough kissing, I took him to the bed. Embracing each other, we let ourselves fall onto the bed... CRAAAAAAACK!

It seemed that two 12 foot insanely muscular titans weighing several tons of pure muscle each were too much for the bed. We crushed it totally... but we didn't give a damn. Only one thing mattered: we wanted to fuck! Without warning I broke the kiss and got on my knees. I grabbed Leo's muscular legs and lifted him a bit. I positioned my huge dick at the entrance to his ass and again, without warning, I penetrated him entirely.

Leo shouted. "AAAAAAAAAAAARRRRRRRRRRRRRRRGGGGGGGGGGGGGGHHHHHHHHHHHHHHHHH!!!!!!"

Well, I should say he roared. It was closer to a lion's cry. Without waiting I started to pump.

"OH MY GOD!!!" yelled Leo. His hands were seeking something to grab, but anything that had the misfortune of being caught was instantly reduced to dust. I pumped again and again and again. Leo couldn't stop yelling while I was grunting continuously. Shit! This wasn't at all like our usual way of making love. It was rough, animalistic… no... bestial! AND I FUCKING LOVED IT!!! I don't know how many times my dick pumped into him. At least several hundreds of times, maybe several thousands, but I was going to do it until I wore out. l accelerated the pace more and more, allowing no rest for him or for me.

"OH MY GOD RYAN AAAAAAAAAAAAAAHHHHHHH AAAAAAAAAAAAHHHHHH AAAAAAAAAAHHHHHHHHHH!!!"

I fucked him without stopping. After a LONG time, our bodies began to glow. We started to sweat. I could feel the sweat flowed from my forehead, go down along my huge pecs and and disappear into the deep crevices of my diamond abs. It was incredibly horny and it really didn't help calm things down. Leo is one of those lucky people who get a perfect tan and can stay naturally brown. His awesome body glistened with sweat. That combination of tons of muscle + tan + sweat was absolutely INSANE!!! I increased the pace even more.

"OH MY GAAAAAAAAAWWWWWD!!!!!" yelled Leo as he tried to grab something he hadn't already reduced to dust. He pressed his fingers against the tiles, breaking them easily and pushing his fingers a few inches into the floor.

"AAAAAAAAAAAAAAAHHHHHHHH AAAAAAAAAAAAAAAAHHHHHHHHHHH!!! SOOOOO GOOOOOOOOOOD!!!" shouted Leo. Tears were streaming down his cheeks. In response I did the most logical thing... I increased the pace AGAIN!

Obviously, Leo yelled more. "AAAAAAAAAHHHH R-R-RYAN I-I-I CAN'T H-HOLD IT ANYMORE!!!" he shouted.

I had to admit that things were getting more intense for me, too. "GGGGNNNNNNNNHHHHHHHHHHHH! TRY TO HOLD ON… GNNNNNNNHHHHHHHHHHHHH… A LITTLE LONGER!" I replied. I wanted maximum pleasure.

Leo closed his eyes and clenched his teeth. Fuck, his dick was pulsating like crazy. Yeah, the climax was near!

I completed another ten strokes before the pressure became unbearable. "GNNNNNNNNHHHHH LEO, I-I CAN'T TAKE IT ANYMORE! AAAAAAAAAAAAAHHHH! ON THE COUNT OF THREE, TOTALLY LET YOURSELF GO!" I shouted.

Leo didn't reply. We were both at our wits' end and holding back was torture.

"ONE..."

I noticed that Leo's dick was right under my face. An idea popped into my mind...

"TWO..."

Just before saying three, I opened my mouth and completely swallowed Leo's cock. It was a strange sort of 69 position except that Leo's mouth was free and his ass was filled.

"MPPPFFFF THREE!!!"

"AAAAAAAAAAAAAAAAAAAAAAAARRRRRRRRRRRRRRRRRRRRRRRRRRRRGGGGGGGGGGGGGGGGGGHHHHHHHHHHHHHHHHHHHHHH!!!!!!!"

Leo's cry echoed throughout the room, shaking the walls. Mine was muffled by the hot geyser flooding my throat. Leo must have felt his insides being warmed up by my white seed. After about ten shots I had to remove my mouth, unable to swallow any more cum. As for Leo, my shots were squirting from his ass and hitting my abs, the cum disappearing into the deep crevices of my ten-pack, mixing with my sweat. I noticed that Leo's belly was slightly swollen. He was also unable to take any more. I don't know how much we came, but I wouldn't be surprised if there was enough to repopulate an entire country. The deluge lasted for several more minutes before finally subsiding.

Leo was panting loudly; "HA... HA... HA... OH FUCK... HA... HA... IT WAS SO AWESOME!"

Ha! Leo thought we were done. He was way off the mark...

"Was, Leo? It was? Ha ha! Did you really think we would be satisfied with this one round of sex? Hahaha, no, Leo, that was just the aperitif!"

"Huh? What do you mea..." I did not let him finish his sentence. Still inside him, I put my hands behind his muscular back and stood up. "OHMYGOD!!!" shouted Leo, surprised. He wraps his titanic legs around my waist, having still my enormous cock inside his ass.

I remembered a fantastic position I had seen in a muscle growth/sex comic I had seen. It was time to try it, for real!

"Aaaaaaaaahhh!! W-W-What are you d-doing?" cried Leo, gripping my traps due to the immense pleasure that ran through him.

"Hehe, you'll see, honey!" I moved to the wall and slammed Leo against it. I gave it a few blows with my fist to see if the walls were thick enough. It seemed like it would hold up for a while.

"WHAT THE AAAAAAAAAAAAAAAAAAAAAAAAAAAAHHHHHHHHHHHH!!!!!" shouted Leo, not expecting this. I felt his grip tighten even more.

"GGGGNNNNNNNHHHHHHHH! So Leo, do you like it?" I asked, knowing in advance the answer.

"OH GOD!" Leo cried out. The fact that he was squeezing my shoulders to the point of breaking his knuckles was his answer: yes, he fucking loved it! And damn, I fucking loved this position too! The sensations were multiplied tenfold!

"Then you'll love the next!" I said. I fucked him again and again and Leo yelled more and more. Then I noticed something I hadn't planned on. With each push, Leo's back was grinding powerfully against the wall, digging into it little by little. Shiiiiit! But I realized we had crushed 100-ton tanks, so a wall...

The idea of destroying a wall just by fucking was incredibly horny so I redoubled my efforts and accelerate the pace!  "AAAAAAAAAAAAAAAAAAAAAAHHHHHHHHHHHHHHHHHHHHH!!!!!!!!!" shouted Leo. Damn, his grip was fucking powerful! His head was back and drool was flowing from his mouth. Without a doubt, Leo was pushed to his limits of pleasure.

I fucked him again and again and again, digging more and more into the concrete wall. Finally, when about half of the wall was already gone, Leo noticed what was happening, seeing pieces of the wall falling to the ground.

"OHMYGOD RYAN Y-YOU..."

"GGGNNNNNNNNHHHH Yeah Leo! You're only noticing it now? So... should we destroy this wall?" I asked, guessing his answer.

"FUCK YEAAAAAAAAHHHHHHHHH!!!!!!" he yelled happily.

"VERY WELL!" I shouted. Again, I increased the pace!

"AAAAAAAAAAAAAAAAAAAAAAAAAAHHHHHHHHHHHHHHHHHHHHHHHHHHHHH!!!!" shouted Leo. Very soon, we were going to get through, it was imminent! I could fuck him a few more times when suddenly... CCCCCCCRRRRRRRRRRRRRR… cracks started to appear all around Leo. There was a second of silence and suddenly I felt myself falling forward (and Leo backward). We collapsed heavily onto the floor. (RIP floor!)

If Leo thought we were done, I was not satisfied… definitely not satisfied! Barely on the ground, I got back on my knees, I grabbed his legs and, like before, I continued to fuck him.

"AAAAAAAAAAAAAAAAAAAAAAAAAAHHHHHHHHHHHHHHHHHHH!!!!!!" shouted Leo. "T-Too much!" he shouted in crying.

"Ha ha! Too much, Leo? Are you serious? We are far from finished!". Crap, I wasn't just a fucking titan, I was also a sex beast. never in my life would I have thought of having sex like this. And you know what? I LOVED IT! The ass-fucking lasted another 15 minutes nonstop before we climaxed again. This time we shouted unison. The result was an earthquake that cracked the walls and ceiling, followed by a combined white deluge. Our rooms looked like battlefields: crushed furniture, walls half-destroyed, holes in the ceiling, cum everywhere.

Leo was panting more, but I did not spare him. We had not become titans to be tender. And just between us, I knew he loved it too! It was brutal, wild but so fucking good! And damn, he was so beautiful! He was dripping with sweat, strongly accentuating his muscles. He looked me directly in the eyes. "Ha... ha... ha... well, Ryan, should we move on to the next course?" Ha! I knew it: he wanted more... and me too!

Fuck yeah, Leo! The next course would be turkey stuffed with cum! The meal had just begun and when we're done, I guarantee you'll have a full stomach!

-------- Meanwhile, in the tank room… --------

The door to the lab opened and a hooded person dressed all in black snuck into the lab. He went to the main computer and plugged in a USB stick. "Hehehe, one more step and I will finally have what I've been waiting to get for so long! Okay… a password... if I'm not mistaken, it will be this. Weird password by the way..."

He entered "theswimminghole" as password and... *ACCESS GRANTED* "YES! FUCK YES!!" shouted the intruder. "Well, it must be this folder."

The burglar opened a program on the USB stick, selected the folder, and copied it to a weird email. The file was huge, so it took several minutes. During the transfer, the thief saw several things: a document named "Louis_Pointdexter", another called "Matt_Buckley", then "Kurt_Beckendorf", "Donny_Henderson", "Eric_Dobson", "Pete_Temple", "Brian_Peterson", and another about a certain "Jimmy". Shit, there were many, many files!  He saw many other first names: Nick, Chris, Enzo, Alexander, Noah. One folder was called "experimental_projects" and contained several files such as "ems_belt" or "cock_ring." And two names that he knew: Leo and Ryan.

He wondered what this was all about. Who were all these people? But he was instructed not to snoop, just to access and send all documents. This was why they had him infiltrate the research team. All those months of deception had been a torture for him. He hated his "colleagues," but it was almost over. In a few minutes he would have accomplished his mission and fulfilled his part of the contract. When the screen displayed the message, "Email sent successfully," a big demonic smile appeared on his face.

"Finally! FINALLY, I DID IT!!! HAHAHAHA." He pulled out a phone and dialed a number. "It's me. I completed my mission. I sent you all the documents."

A distorted and robotic voice answered. "Perfect! Absolutely perfect!"

"I have fulfilled my part of the contract, as we agreed. Now will you honor your part?"

"Of course, but we would like one last thing from you," said the voice.

"One last thing? That was not what we planned," replied the agent with an angry tone.

"Don't worry. I'm sure this last request will be in line with your objectives," said the voice.

"What's this last request?"

"Well, now that we have the documents, Doctor Krakovski is a nuisance and is no longer useful to us. It would be a terrible shame if something happened to him, wouldn't it?"

"Indeed," said the thief with a slight smile.

"And it would be very annoying if there were witnesses to his... accident," added the voice. The thief didn't reply, but his smile got a little bigger. "And when I speak of Doctor Krakovski, I am obviously also talking about his... test subjects."

Now his smile was downright disturbing... "And to accomplish this last request, I can use whatever method I want?" asked the thief.

"Of course. That's why we gave you full access!" replied the voice.

"Excellent! Well, you're right… it will be a great pleasure to take care of this last request. Hehehe!" The thief would clearly enjoy it.

"Very well but remember there must be nothing left of the lab... nor of its occupants," said the voice.

"Don't worry about that," replied the thief.

"Perfect!" finished the voice.

The communication ended. The thief waited for a few minutes in front of the control screen. "Come on! Faster! Faster!" he said impatiently. Suddenly the padlocks displayed on the screen disappeared and were replaced by a green message: "Access granted."

"Yes!!! YES!!! FINALLY! FINALLY, HAHAHAHAHAHAHAHA!!!!!!!!!!!" shouted the thief, jumping with joy. He adjusted the controls. He pressed a button and the glass front of the tank started to come down. The undercover agent undressed and entered the tank. He attached the different cables and electrodes and put on the oxygen mask.

The glass front began to rise under Kenny's psychopathic gaze...

[Ro20316]

OMFG That twist!!

Kenny is a double angent? Omg!

Mam thanks for giving us such a great second part

[MuscleGodInTraining]

Oh damn I am excited to see Kenny grow massive. 

[SamuelBarbado]

I really enjoyed the transformation. Made me wish to be that gigantic myself. More! 

[Trio]

Amazing, and I’m intrigued, would there be more to this story?

[Azerreza]

Of course! I have planned a third part.

[Naugren]

Hot damn! What an amazing story! I LOVE it when guys want to get bigger and bigger and bigger and scream for MORE!

[GINGERSUPERMAN]

Fuck I can't wait for the next part

[Azerreza]

Thank you very much for your comments. Really glad that you like it so much, I didn't think I would get so much positive feedback! So I started to write the last part and small spoiler but it will be probably the most intense and biggest muscle growth that I have written so far. I would really like it to end in a total apotheosis, that you ejaculate just by reading this chapter (in a manner of speaking, of course, but the goal would really be to push you to your limits)

Anyway, feel free to send me things you'd like to see in this chapter, in terms of hot scenes. I don't promise to put everything, just that, well, my descriptions are starting to be quite repetitive and I'm afraid that it's too banal, not exciting enough. I have already been suggested one or two things that I would not have included if they had not been suggested to me. So don't hesitate to send me messages!

EDIT: and also, when it will be finished, I'll probably ask for a review like the second part. So tell me also if you're interested.

[GINGERSUPERMAN]

Bump 

 

Can't wait for the next part