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Previous Parts can be found here:

Part 01 - Part 02 - Part 03 -

Now here is the long awaited Part 04...

Part 04

Want Me, Want You


Matt pulled Andrew’s warm body into his larger frame. He felt the need to be protective over his much smaller twin. He stared at the TV blankly, not really interested in what was playing on the screen, but more interested in what happened at the gym. After his workout. That shower encounter with Dan. It was frightening and the thought of Dan getting his large paws on him after he grew to epic proportions was making Matt even more fearful. 

Matt looked down at Andrew, noticing the new muscles on his smaller twin brother. Even thin, the muscles definitely stuck out with great curves and definition for his smaller size. The muscle on Andrew though, just thinking about it gave Matt a feeling of comfort. He slowly closed his eyes and drifted slowly to sleep.

***

Dan and Andrew appear before Matt as he stared up at them from his spot on the couch. Both his brother and rival stood in front of him, but Andrew looks much different. He is massive, built like a tank. Both of them with huge giant cocks that were fully hard and being stroked over him. They are so large they literally cast a shadow over the tiny Matt. 

Matt tries to stand up. He’s fearful of what is about to come, but his legs won’t move.

With a smirk on their faces, both large men reach down for Matt and grab him around the throat…

***

Matt suddenly jerks awake from the nightmare that was about to unfold. He looks around the room for a moment before looking down and seeing his smaller twin still sleeping by his side. He also notices his own cock is once again tenting visibly in his shorts. Things begin to click in his head; something very strange is going on. If it wasn’t for his cock being a huge distraction, he might even be able to figure out what it might be.

Andrew begins to stir awake, stretching his arms out, noticing the hard cock pressing out underneath the fabric of his brothers shorts. They were stretched out into a very large tent. 

“Hey there, big guy,” Andrew looked up at his brother, sleep still in his eyes. Andrew’s own cock was hard as well, its 5 inches pushing against his tight bathing suit trunks. “You look worried still. Something is not right with you.”

Andrew reaches out to touch the highest point of Matt’s tented shorts where a big spot of pre-cum was beginning to form. He moves his hands across the top, making Matt moan a bit before moving his fingers into his mouth to taste his larger bro. Andrew noticed there was nothing to taste, Matt noticed the spot was completely dry where his brother was just touching. 

Matt looks over his brother. His mouth opening in shock and awe as the blonde hairs on Andrew’s arms and legs began to darken, more and more, until they took on a black color like the hair on his head. Andrew grunts a bit, clutching his stomach for a second. When he moves his hand Matt sees another change, the deep cuts of his 4-pack have now taken on a much more cut look. Four true bricks popped prominently out of his smaller brother’s skin and he wasn’t even flexing them.

“You can tell me anything, Matt,” Andrew gazed back up at his brother. “We’re twins. You protected me when you kept on growing. Can’t I protect you, Matt?”

“I just had a weird dream, that’s all.” Matt looked down at Andrew bashfully, not sure if he really should say just how weird it was. He felt a bit awkward after Andrew pressed his finger against the wet spot on his shorts, taking his pre into his mouth and watching it completely disappear. 

Matt noticed his smaller bros own tenting swimwear. Reaching over and grabbing the waistband, he slowly pushes Andrews’s shorts down slightly, just enough for his five inches to bounce free and straight up. “Right now, it looks like you’re the one who could use some help, Andrew.”

Matt reaches down and rubs his brothers balls gently, the small orbs rolling around in his finger as he watches Andrew’s cock rise a bit higher as his arousal increases. He slowly moves his and up the shaft, pinching the cockhead, causing a bit of clear pre to seep out of it. Matt brushes the pre off with a fingertip, bringing it to his own lips, before pushing his finger into his mouth. 

Andrew looks up at Matt. Seeing the finger go into his brother’s mouth was a turn on, but something else was happening. As he continued to watch, Matt’s beard was beginning to get thinner. The hair on his arms and legs began to get a bit less dark. Andrew watched and began to get a bit excited at the sight of this.

He reached out to Matt’s shorts, pulling them down, watching his brother’s huge cock finally emerge, free and hard. He was being drawn to the bubbling hot cum emerging from his larger brother’s piss slit and could practically taste the sweet pre-nectar.

Matt continued to stroke Andrew, and although Andrew was so fascinated with Matt’s impressive display, the attention Matt was giving him still brought his attention back to himself as he let out a moan of pleasure. Andrew reached forward as his brother continued stroking, touching Matt’s cock juice and scooping up a good amount, bringing it to his lips, tasting it.

As soon as it touched, hair began to push out of the pores of Andrew’s underarms; large tufts of hair erupting out of his pits, thickening more and more. Going south down his body, a trail began to grow out of his pubic bush, going straight out of his waist line and attaching itself to his belly button as the start of a treasure trail formed on his body.

Andrew lifts himself up a bit, pressing his lips to his brothers as he kissed him as best as his smaller body could with a strong hand still gripping and stroking his cock tightly. “I fucking love you, Matt.” Andrew rubs the side of his cheek against Matt’s bull neck, a slight bit of course skin from him makes Matt shudder and excited as he realizes Andrew has the beginning of stubble forming on his face.

Matt growls, pulling Andrew against his body with one hand, using his free hand to continue to grip Andrew’s hard dick. “I love you too, Andrew.” Matt takes one long breath, letting out a low groan of pleasure as Andrew’s stubble continues to rub against his thick neck, driving him even wilder.

Matt’s dick surges in Andrew’s hand, rock hard and throbbing; yet it’s not as big as it was before. Although it could be that Andrew has a bit of a better grip on his cock. Matt bends down a bit, bringing his lips down to his brother this time; they slowly kiss, letting the passion smolder hot and low. Matt begins to slowly make his larger hand rise and fall on his brothers cock, feeling Andrew quiver from the hand job he was giving him.

Matt reaches over and grabs Andrew by the hips with both of his hands, pulling his smaller brother up onto his lap. Both of their dicks rubbing together; the pre cum from both of them mixing as they kissed.

A weird sensation begins to fill both of them as they look on at each other, both of their bodies begin to show differences. Hair begins to rise out of Andrew’s skin more, traveling up his small set of abs and beginning to branch up to his chest. The hair begins to swirl across each pec muscle; its light, but he more contact he has with Matt, the darker and darker it begins to change as the precum continues to flow from each of their hard dripping cocks.

For Matt, the changes are the opposite. It almost looks like he has begun to start shaving his fur to make his muscles look bigger. The hair begins to thin out and starts retreating in some places right back through his pores as if the hair was never there. As he continues to watch his chest hair disappear, he gives another glance at Andrew and notices wisps of hair beginning to sprout on his twins chin.

Andrew feels the sensation too, scratching at his face, feeling more and more tiny hairs begin to sprout outward and get coarser. Andrew looks up at Matt, seeing his brother’s facial hair begin to slowly retract away as well. “We need to stop, Matt.” He tries to pull away, but Matt is almost entranced by his brother’s changes, holding onto Andrew even tighter.

“Mmm… Fuck no, Andrew,” Matt growled, wrapping a huge arm around him, keeping his brother in place as he looks on at the new developing beard thickening on his smaller twin, growing denser and more noticeable with each passing second. Matt is getting more and more turned on watching Andrew becoming increasingly more manly and studly. “I want you so bad, Andrew.”

Matt rolls both of them over so that Andrew is on the couch and he is right on top of him, his huge body pinning his twin in place, still much more massive then him. Matt leans down, kissing Andrew’s neck… his collarbone… his chest… and his abs, slowly sliding off down off the couch to kneel in front of his smaller brother. 

Matt rubs his jaw against Andrew’s thighs, and Andrew notices how Matt’s course beard and stubble are almost none existent; there is no rough and bristly sensation like there should be with a man that has had some kind of beard growth before, they are almost soft by comparison, Matt leans in and gives Andrew’s shaft a few experimental licks, then pulls down Andrew’s swim trunks down a bit further to get access to his balls. Matt licks at them a few times, kissing them, sucking on them, pressing against them with his tongue.

Matt takes a quick look up at Andrew and breathes in his scent, sitting there with his legs spread, a new musk permeating from his brothers loins and races up into his nostrils. Matt’s eyes open wider with aroused delight. “Stop? Why would I stop? Are you telling me you don’t like it when I do this?” Matt kisses one of Andrew’s testicles, “or this?” he licks the other one, “or even this?” he runs his tongue up the sensitive underside of Andrew’s shaft, then kisses the cockhead, his tongue darting out to lap up a bit more of the pre-cum bubbling out of the tip.

Andrew watches on as the last traces of beard retreat away from Matt’s face. All that remains is his sideburns. Andrew watches, more shocked than ever. The guy who was once the manliest looking man he had ever seen was almost now completely hairless from the nose down.

Andrew reaches over and grabs Matt’s jock strap; it’s completely soaked with pre-cum. Or it was, as in a matter of seconds, it’s completely dry. “Oh, fuck!” Andrew looks down at Matt, as Matt gazes up at him. A new lust bleeding out of Matt for Andrew as Andrew’s masculine identity intensifies and it begins to almost pulse off him and pull Matt right back into him. Andrew’s cock begins to get harder than it has ever been.

“Well, that answer’s that, doesn’t it?” Matt smirks, moving forward. He engulfs Andrew’s cockhead with his mouth, moving slowly down the hard shaft, until his face hits the new forest of pubes around the base of his brother’s cock. He continues to push forward, not stopping until the tip of his nose touches Andrew’s torso. He then begins to bob up and down on his dick, his huge muscles tensing under his shirt as he blows Andrew as if his life depended on it. Matt runs his hand along Andrew’s thighs, massaging them gently, noting that they seem just a bit sturdier than he last remembered.

Andrew just sits back as Matt sucks on his hard shaft. He reaches a hand shakily toward his brother. Matt looks up and sees his arm moving, and he grabs it, placing Andrew’s hand onto the back of his head. Matt smirks a bit like ‘Fuck yeah, little bro! Take charge!’ Andrew swallows the lump in his throat, a bit more at ease as he watches Matt’s head move back and forth along his cock and his own hand rubbing along the top of his brother’s head with the motion, his fingers moving through Matt’s hair as he felt himself getting closer and closer to climax. “Matt… Nnnn…” Andrew begins to grunt a bit. “Fuck, it feels so good…” Andrew reaches his other hand out and places it also on the back of Matt’s head, assisting him a bit more with his blow job. As Matt begins to pull back, Andrew pulls him back towards his deep musky bush of pubes.

Matt enjoys the feeling, Andrew pulling him downward onto his dick as he continues to push and thrust his hips up to meet Matt’s face, driving his dick right down his throat. Matt relaxes, letting Andrew guide him, move him, use him as a tool for his own pleasure. The whole time, he wants Andrew to do all of that, to fuck his face with his blossoming manly cock. Matt distantly realizing that’s a very submissive thing to think, and not at all like how he usually is. But right here, right now, at this moment, it seems like the most natural and perfect thing imaginable. So he maintains his suction on Andrew’s dick as best as he can, while letting his twin pull his head back and forth, forcing him down on his cock.

Andrew moans deeply, feeling something inside of his ball sack, unlike anything he has ever felt before beginning to build up and radiate from within. He looks down at Matt, moving his hands away from his head for a second to let Matt get a glance at him. Matt still continues to suck though, waiting for his reward. “Matt…. Ahh Fuck… You want this right?” Andrew’s balls begin to churn and ache, but he can’t release just let; something inside is holding it back. “Please Mat…” They begin to pull up; he feels as if the cum is beginning to creep and pump into his shaft, ready to explode outward into his brother’s waiting throat… “Want… Me…”

Matt breathes for just a second, just long enough to say, “Want you so bad, Andrew,” before plunging back down onto his brother’s dick, taking the whole five inches in one go, pressing his nose deep into his bush, into the flesh of Andrew’s torso. He can feel Andrew’s dick shaking, quivering, and trembling. He knows his twin is about to explode. Using his tongue, he teases the underside of the shaft, sucking stronger than ever, eager to pull Andrew’s cum right out of his shaft if he has to.

Andrew’s hands go right back to the back of Matt’s head. He pushes himself forward, almost leaping off of the couch and knocking Matt over, but Matt makes sure to hold on tight as Andrew presses his pubic bone as far as he could up against Matt’s face. His cock lurching round Matt’s lips, in his mouth, down his throat as he fires the first salvo down into his brother’s waiting belly. Matt has no time to swallow as a second blast fires into his mouth, coating his tongue, followed by a third, a forth… Matt loses count, not knowing when it will stop as he continues to try to swallow it all.

In the meantime Matt’s body is undergoing another de-metamorphosis. His muscles begin to shrink in size at a steady rate. Andrew’s cock becoming a bit harder to suck as his body shifts on the floor, losing another inch in height, and then another.
Matt begins to see what’s going on, and pushes Andrew off of him. His body shifting more and more laying on the carpet, yet he’s not even moving at all. Matt looks up at Andrew, finding his twin’s eyes. He’s just as scared as Andrew is now. Things are different, and will continue to be from now on. Matt feels weak, and right before he blacks out he hears the calming sounds of Andrew’s voice.

“I’m so sorry Matt…”

To Be Continued…

Coming Soon Part 05: The Experiment
 

 

 

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Mguy

Glad to see this continue.   A great story and a fantastic chapter in it.  I love it.

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Kymuscleboy

Fantastic chapter! It'll be interesting to see just how much Andrew and Matt grew and shrank respectively as well as other changes that take place as the brothers literally change place in the world. Also, was Matt's dream about Dan prophetic? I know if I was Dan, I would be coming back for more ASAP!

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