There is nothing you can do but stare up at your 25 foot tall younger brother as he grows taller and taller, completely at the mercy of whatever mysterious force that is affecting him making him grow bigger and bigger until he reaches 26 feet and is showing no signs of stopping.
Kyle’s head is tilted back, the expression on his face is one of drunken bliss, his eyes rolling back into his head, his mouth open with his tongue lolling out, serving as a clear indication that the sensations of his growth are sexually pleasurable. In case that wasn't convincing enough, the moans and heavy panting that followed every throb of the 3 foot pecker and the basketball sized nuts hanging between his legs certainly put paid to any doubts.
While watching Kyle grow bigger, you realize something else is happening as his voice is getting deeper and the pitch is dropping as he continues to grow. This is not the only thing you notice dropping, in fact, you have see his massive balls start to drop inside his sack, which is slowly sprouting peach fuzz all over it as they descend. Additionally, you will see a small patch of fur growing above his genitals as well.
This is when you start to understand what is happening. Kyle is not only growing bigger this time around...he is also maturing as well!
"Ky...Kyle!” you call out to him, but it's in vain as your brother is completely oblivious to the world around him because he is completely sucked into his own world of pleasure.
You watch helplessly as Kyle grows taller in height approaching the threshold of 28 feet tall meanwhile the baby fat adorning his limbs and belly melts away revealing the muscles growing beneath.
The patch of fur that initially grew in above his dick quickly grows into a small pubic bush whlie some smaller strands grow from the peach fuzz and lightly coating his ballsack. When you look higher up, you can see patches of brown hair sprouting in his armpits, as well as long strands of stray hair scattered across his chest where the beginnings of his pecs are beginning to appear.
As all this is taking place, Kyle continues to release an endless series of moans and groans as his body continues to change. His voice has continued to gradually get lower in pitch with each of his moans sounding deeper than the last with squeaky sounding ones in between. “Mmmph! Big bro!” He cries out in a deeper sounding voice “Ohhh…Ohh-*squeak*-hhh…it..feels…so goo-*squeak*-ood!!!”. Kyle’s voice is breaking! There is no doubt about it now, having gone through it yourself…your brother is going through puberty!
You are only allowed a few seconds to let this sink in when the sound of splinter wood coming from above catches your attention. You look up just in time to watch as Kyle reaches a height of 30 feet and his head and shoulders break through the roof of the house.
Kyle's moans are becoming louder and more frequent. “Oh! big bro!” Kyle cries “I’m gonna…I think…I’m about to…about to…” You immediately look up at his huge cock, you see its mushroom tip swollen and flared, it's hole opening and closing as it throbs with his heartbeat. It is obvious what is about to happen. Then without a second thought, you make a dead run for the door. Upon reaching it, you throw it open and run out into the yard. Just as Kyle cries from behind you, "Broo-Ohhh! I’m gonna…I’m gonna…Big Bro-Oh...I'm...I'm Bro-Ohhhh…YEEESSS!!! AHHHH!!!” followed by the sound of his massive load of spunk splattering against the living room wall.
Once outside you look back towards the house, you can see Kyle’s head and shoulders sticking up and out from the roof of the house with a big dopey look on his face…a face much different from the Kyle you know and love. The once rounded features of Kyle’s face have instead become much square in shape; in place of the puppy fat that graced his cheeks are now instead dusted with a sparse layer of wispy facial hair.
From the looks of it, Kyle's latest growth spurt somehow aged him from his original age of 8 years old to around 14 years old!
His orgasm seems to mark the end of his growth spurt. Taking a moment to catch his breath, Kyle slowly reaches post-nut clarity and turns his head to look down at you.
“Hey…*pant* Bro?” Kyle says in a more mature sounding voice “I think it stopped”
It takes a few seconds for you to take in what you are seeing before words find their way to you "Kyle!" You exclaim "Oh my god! Watch yourself!"
He does exactly that, staring down at his body before swiftly turning to face you again with a look of astonishment upon his face. Kyle then careful climbs out of the house through the hole in the roof, trying not cause any further damage to the already damaged house. Once he has freed himself from the house, he stands in the middle of your family's yard in all his naked glory. His penis hanging limply between his legs; a single ropey strand of cum is dangling from its tip down to where it clings to the inside of his right thigh. It is certainly a good thing that your house is located in a rural area, because you would be in serious trouble with your neighbors if you lived in a city.
You observe Kyle as he begins to explore the new changes which have come along with that latest growth spurt he went through. His hands roaming over his form as he inspects his arms and chest, feeling his new muscles there and recently grown hair. You don't say anything just yet, you know he is just as confused as you are with this latest development or should you say HIS latest development if not more so.
Kyle's big green eyes turn to you once more "Big Brother!" He says "Look at me! I got big again! Bigger than last time!". "You didn't just get bigger...." you point out to him "you got older too!". After hearing this, his eyes widen. "How old do you think I am now?" he inquires. "Well, if I didn't know any better" you say to him, "you look like you're fourteen now! You're a teenager!"
Once again, Kyle's gaze moves down to his naked body. He stares at himself briefly before taking his dick into his hand and then looking back at you again. "Big bro," he says softly....