Nate lifts his older brother off his dick as it starts to go limp and sets him on the floor.
"Chris... this is- this is insane. How are you so massive all of a sudden?" Nate asks, ignoring the question as he stands before his giant, imposing baby brother. Chris, in turn, starts feeling his hard, muscle-packed body in admiration.
"I don't know, but I'm sure enjoying it," he responds as he moves toward Nate, knocking him onto the floor with his massive leg. He gets down on his hands and knees, looming over his diminutive older brother.
"I'm so big and strong now, much more than you are," he states as he grabs Nate's tiny arms and effortlessly pins them to the floor. His 24-inch cock dangles freely above Nate's chest, swaying like a pendulum and drawing Nate's eyes. He tries to break out of Chris's hold, but his efforts are of no use as he continues to be dominated by his own little brother.
"Get off me, Chris. I'm your older brother!" Nate demands as he squirms uselessly on the floor.
"That's right, little bro, keep struggling," Chris says as he enjoys watching his small, older brother fight in fear and discomfort. Suddenly, however, Chris notices another strange feeling like before, then he feels his entire body tingling.
"Yes, it's happening again..." he says as he starts moaning. Nate once again watches in disbelief as his brother grows before his eyes. Nate can feel Chris's hands expanding as they encapsulate his arms, and his body slowly grows. His muscles enlarge as his body does, and his pecs, which hover over Nate's face, enlarge to a size that not a single bodybuilder could imagine. His biceps follow along as they swell up to ten times bigger than Nate's biceps, being big enough to curl an entire car. His growth then starts speeding up after a foot increase, and when Nate thinks it can't get any worse, he feels something touching his torso. When he looks down, he sees that Chris's dick is several inches longer than before and is hardening fast. Its head begins poking him in the belly, feeling smooth and leathery while also gigantic and heavy. Completely in awe, Nate stops fighting Chris's grip and watches the scene unfold. His growth goes on for nearly 2 minutes, but soon it decelerates until it's over. Chris opens his eyes and sees his tiny brother on the ground, seemingly turned on and afraid.
"Wow..." he says in amazement as Nate scans his body. His height is 17' tall, showing a 6-foot increase in 2 minutes. His muscles had become rock-hard and gigantic, his pecs as big as beach balls, and his biceps not much smaller. His dick presses firmly into Nate's stomach, nearly 4 feet long and as thick as Nate's torso. Nate gulps in fear as Chris looks down at him with a devious grin.
"I think it's time for round 2, little bro," he says as he starts rubbing his dick on Nate's body. Nate gets pushed around by the giant, hard penis as it massages his weak, insignificant body.
"Ack- stop that!" Nate yells, his hands trying to push away. Chris ignores him and continues to pleasure himself against Nate's will.
"You're too weak, Nate. Why don't you keep struggling? After all, my dick is nearly as big as you are," he says as he continues for several more minutes. He then grabs Nate's waist and starts rubbing him up and down. Nate cries and goes limp in Chris's hands as his body is used mercilessly.
"Oh- oh yeah, come on-" Chris moans as he gets nearer and nearer to his climax. Not much later, Chris starts pumping harder until he finally ejaculates, spraying cum into his brother like a firehose.
"Thanks, little brother, that was great," Chris says as he drops Nate to the floor. He raises his giant foot and steps on him, pressing his tiny body into the solid, wooden floor. Nate cries in pain as he grabs onto Chris's large big toe, which tickles his chin.
"I am your master now. You're my little cum slave, my servant, anything I want you to be. Understand?" he commands. Nate nods his head in tears, and Chris lifts his foot off of him.
"Good, now here's what we're gonna do next..."