James, a 13 year old boy, was peacefully watching gameplay videos on his phone when he received a message from his best friend, Kendall, another 13 year old boy, except that James has a perfect ebony skin and very curly black hair while Kendall was as pale as milk with long messy brown hair. None of them was tall and Kendall had started to get some weight because of puberty.
Ken: James, what are you doing? Are you ok?
James: I'm fine. I'm watching some videos, why?
Ken: Because
James: Because... what?
Ken: You better see it for yourself.
James thought that his friend was acting suspiciously but he kept watching his video for a moment before he received a picture from Kendall. He didn't mind too much about it and opened the picture, however he didn't expect to see what he saw. It was a selfie from a very big and hairy guy, maybe in his late 20's. He had a really broad chest, a big beard, pillow-like pecs, thick arms and huge mitt-like hands that held Kendall's phone.
James: Wow, who's he? A cousin?
Ken: What? No! It's me! I got infected with the maturity virus!! I started to feel weird an hour ago and now I'm this mass of muscles and hair! You're the first one to see me like this!
James: Haha, how funny... (sarcasm off) If this is just another prank...
Ken: James!! This is not a prank!! I'M A FUCKING BEAR!!
James: Ok, then prove it. Show me a photo of your birthmark.
Ken: But it's on my left thigh, you'll see my junk!
James: I don't want to see your junk. Just your birthmark.
Ken: You know what, I don't care. See it.
After a few seconds, James got another picture from Kendall. When he opened it, he immediately saw a big fat cock and two egg size testicles between a pair of thick manly legs. Everywhere was covered in a thick layer of curly black hair, particularly above the dick where the hair was so dense that it looks like a hamster. It was hard to see at first, but under that layer of hair, James was able to find a heart shaped birthmark. James can't believe it. It really was his friend, Kendall!
James: OMG!!! Kendall, is that really you?!
Ken: It's what I've been telling you since the beginning!
James: You're huge! Literally everywhere!
Ken: Tell me something I don't know. I feel so heavy and clumsy and sweaty. My feet are huge, my butt is huge and my dick.. You don't know how hard is typing with these sausage fingers! Oh fuck, I didn't want to be infected!!
James: I thought you stayed at home since day one. How did you get infected?
Ken: I don't know. I practically live in my bedroom now! The only time I left it was when you visited me last week.
James: Are you implying that I'm infected?
Ken: Well, at first that's what I thought but since you're still a kid and I'm a smelly furball. I guess you're not.
James: Maybe I'm immune.
Ken: Maybe... Wait, my mom is at my door. I don't know how would she react when she saw me. I'll call you later.
That was Kendall's last message. James tried to watch his video again but the picture of his friend's new body continously appeared in his head. He can't believe how powerful the virus was that it can change a small boy like Kendall into the hulking man he saw a minute ago. He wondered if Kendall was right about him. Could he be infected too? Will he become monstrously huge like his friend?
He started to sweat, that usually happens when he's nervous so he opened a window and took a deep breath. However, something weird happened. When he exhaled the air came out but his chest still felt swollen. He breath a few more times and noticed that his chest wasn't turning back. In fact, it was getting bigger and bigger.
“What is happening?!” James said as he started to panic. He closed the window and ran to the small mirror on a wall. He tried to hold the mirror but his hand began to tingle and a itchy sensation started to run all the way up his arms. His arms suddenly lengthened and expanded which caused his sleeves to begin to tear open. His arms formed thick muscles and biceps which tore his sleeves open even more.
James was terrified at was happening. He can see curly black hairs sprouting on his former hairless arms. He clenched his stomach in pain as he started to feel the same sensation going through his torso and down his legs. It was like a thousand ants crawling throughout his skin.
“Oh, it's happening fast!!” He grunted as he began to grow taller from his 5'6" height to a whopping 6'8" . His clothes began to feel really tight on his tall body now. His shoes felt so painful too. He tried to take them off but he was interrupted when his feet suddenly bursted out of the front. James couldn’t believe his eyes, his toes looked so big and manly now! His shoes continued to burst open as his feet became larger and larger. “Ugh! I... should... call... Ken” James groaned in pain as his feet ripped and shredded his size 7 shoes. His feet had grown to a large size 16. He felt an electric tickling when his big bare feet tocuhed the carpet for the first time.
Meanwhile, the tingling sensation continue to run up and down his legs. His legs became thick with muscle and a lot of hair began to sprout all over. His already small shorts became even smaller and tighter as his thighs began to expand with muscle. He could hear his shorts starting to tear all around as his butt grew larger and wider. His tight underwear was now exposed from the back. The tingling sensation then rose into his torso.
His shirt buttons began to pop open as his torso expanded. James' torso began to form thick slabs of muscle on his chest and abs started to form. “Aaah!” He groaned as his chest bulged with large pecs and his nipples got hard. Then hair began to sprout all over his torso giving James a very mature looking alpha body.
The tingling sensation then went into his throat. “Ugh!! Uhhh!” James realized that his voice had dropped a lot and then he put his hands on his throat to feel the Adam's apple that grew inside. James coughed loudly hearing how deep his voice was again. All that was left on him was a tight pair of ripped shorts and underwear. But he already knew that it won't last for too long.
“Uuuh! Uh!! Uh!” James began to moan uncontrollably. “How big I'm going to end up?!” Jimmy said terrifyingly as he felt his underwear getting tighter and tighter. Before he could cup his package from the pain his balls bursted out of his tight shorts. They hung low and kept expanding right in front of him until they looked like chicken eggs, hairy chicken eggs. Then, he felt an intense pleasure and pain from his small dick as it had started to grow larger and harder rivaling with the set that he saw on his friend Kendall a moment ago.
“Ugh! Damn! It's too big!” He managed to say before he started to feel intense pleasure and warmth. Suddenly his dick started to spew out a lot of cum all over the ground. “Ahhhh!!! Uuuh!!” James was now having his first orgasm as an adult. When he was all done he laid on his bed panting for a moment, naked and over grown. In the middle of catching his breathe, his phone received another message from Kendall.
Ken: I escaped from home. I'm outside your window.
James tried to stop panting before he answered. But he needed more time than he expected he felt very tired and numb.
James: What are you doing outside my room? You're infected!
Ken: And you too! I watched it all! You're quite loud!!
James quickly jumped out of his bed and ran to his window. When he opened it a nude muscular man almost the same age as him jumped inside. He was still as pale as milk but his insane amount of body hair made him look a lot more darker. Despite Kendall was freakingly huge, James was astounded of seeing him eye to eye. He can't believe it. They're too big now! Nobody can't believe that these intimidating muscle bear were in fact a pair of weakling kids.
“Whoa James! I'm glad to see that I'm not the only big boy around!” An overgrown Kendall said to James. “You must know that walking with this thing between my legs wasn't that uncomfortable as I expected.” Kendall started inspecting James' overgrown body and touching his pecs, then his thick treasure trail and finally cupping his hefty balls.
“Uh… um. Ken, what are you doing?” James asked but Kendall put his finger on his lips.
“Shhh. Don’t question it James. It's just that this body has made me more... Curious.” Kendall kept feeling James' body, putting his hands in James' bushy armpits, squeezing his thick biceps and meaty thighs. “Tell me, James. Do you think your bed is big enough for us?”