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Rated: 18+ · Interactive · Adult · #1815618
What happens when your little brother suddenly became huge?
This choice: The next day  •  Go Back...
Chapter #4

The next day

    by: john doez Author IconMail Icon
It was the next day, and Nate woke up feeling a weight on his body, he opens his eyes slowly to see the weight was none other than his mischievous brother attempting to hold him down, "Chris..." Nate says in his most unamused tone but Chirs simply chuckles, Nate uses some effort finding he was capable of pushing the boy off and onto the floor with a thump before he stands up. "Awww..dang..not there yet.." he chides himself before the two get up. Nate takes a moment to look over Chris noticing how he was still in some of his old pajama's meant for someone 4'2 and lead to a lot of exposed skin but it seemed Chris didn't mind it infact he seemed to have enjoyed it especially with that bulge in his pajama...shorts now..couldn't call them pants anymore since they rose above his knee's. whats more he seemed a bit taller than he was yesterday and a slightly more built too..

"Hehe 5 feet now bro" Chris exclaims proudly, "That experiment is going to make me into the biggest boy this world has seen" Chris follows up , a statement that sent shivers of dismay down Nate's spine but nonetheless they go downstairs to have breakfast with the rest of the family before their parents have to leave for a few discussions with the government leaving just Nate and Chris alone. In accordance with the families agreement they'd pay for any of Chris's needs so long as they keep him as healthy as possible and that meant activity. "so what sorta activity are we going to do today...gotta get these babies growing" Chris says flexing his arm, his small bicep was still noticeable , no different than ping pong ball sized at the moment but there was more definition. Nate ponders before speaking out, "I guess a few work outs to see where your at now in terms of strength..." Nate almost regretted saying that because he could see the light in Chris's eyes light up at the prospect.

The two boys head out to the basement, the government supplied them with a bunch of gym equipment that they installed last night, they were really eager to test out their new boy. Nate had already been using the schools gym so this was a welcoming change at least to him sense he could get his workout in while keeping an eye on Chris. Chris meanwhile was estatic glaring at his brother with intrigue as he matches his stretching before Nate turns to his brother. "you don't want to...change into something different? im at least wearing basketball shorts and a tank top as my pajama's" Nate points out wondering if Chris would change out of his tightening pajama button up shirt and shorts but Chris shakes his head. "I have to wait for the government to give me new clothes so until then..this should suffice."

The two start with measuring Chris's weight to get a sense of where he is at, 110Ib's at the moment which was a decent start before Nate hands Chris a 35ib dumbbell. It was strange seeing Chris easily get used to the pump his biceps bulging a bit bigger to match and he could swear maybe they were growing a bit too but shakesoff the notion as Chris still needed to catch his rhythm. "Alright now do some squats like this" Nate says instructing his brother the process on doing squats with the weights for efficiency. Chris follows through managing just as well before Nate moves him onto the next exercise. The two lay in the push up positon lifting the dumbbells to their side one by one. "Hehe..this is easy." Chris remarks confidently , Nate rolling his eye's in response before standing up. Nate takes notice of a few of the minor changes Chris's body went through, His button-up shirt seemed to have spread slightly, as his abs have hints of existence a minor 4 pack seemed to be visible now. His biceps bulged out straining his shirt on the sleeves a slight bit more. Lower down, he noticed Chris's butt seemed to pop out more muscularly and his bulge seemed to increase too. His legs being a hint broader than before as well. Nate taking note before moving on mentally and thinking its just a trick of his eye's.


Nate speaks up, "It was easy because i was trying to guess your floor, it'd be perfect for keeping up your endurance but now we get to the real strength test." Nate says as he motions over to a pair of 60's and gestures for Chris to grab them. Its a hefty struggle for sure as he groans with unease lifting both of them up, their so heavy and dense that he feels his body weighed down by both of them which are the near equivalent of his body weight. "GRRR!!" Chris growls as he attempts to lift one of them, straining more and more. His entire arm muscle-flexing, but not getting bigger this time as it focuses on attempting to pull that weight up. Chris manages finally one on each arm before dropping them carefully at his sides, dropping to the floor a bit exhausted. Nate chuckles taking the weights from his brother and putting them up. "So we found your ceiling , growing boy" Nate says with a smile. Something about the way Nate says growing boy rubs him the wrong way but only serves as the kindle to the fire inside of him. Unaware of another side effect being that well his strange erection. Peaking slightly above his waistband was his cockhead throbbing and energetic. Chris doesn't seem to hide it but Nate takes notice and attempts to ignore it

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