Tobias was the first to rise, the morning sunbeams into the window of the lavish household, as it falls right onto the older brothers eyes. The 12-year-old groans as he shifts a bit, with sleep his body feels...good ,real good, and as he lays down to rest for a bit longer he feels the need to stretch. As he does so he stretches out...and out ...and out... till RIIIP. His eyes open quickly..."rip?..that's not right..." As he looks down he notices he has hints of pecs bulging out of his chest and he ripped the front of his shirt from his stretch. As he gets up he realizes how everything on him seemed to have grown from an inch or 3 in height to his muscles. Even the bulge in his pajama pants was a bit...bigger. That is before he turned to see his younger brother Roby who was in the exact same predicament.
"WAHHH!!" Tobias shouts waking Roby up in a startle as he looks side to side really quickly before his eye's lands on his big brother. "WAAAHHH!!!" Roby screams in kind as well as see his bigger brother's condition as they both point at each other. They're screaming fits stop as they begin to ask each other questions on their appearance before realizing how they both don't know. A tingling sensation wrapping around their bodies, and the two boys begin to moan as their bodies begin to change once more. Their pec's plumping up pulling the light tears on their shirt apart even further revealing the 4 pack of abs underneath. Shoulders broadening with newfound muscle as their new biceps pump up and round out like baseballs on their arms. They look down at their hands and notice their nails seem to sharpen and elongate a bit. They look to their legs and see how their thighs and calves thicken , bulging into mighty leg muscles before their feet nails sharpen as well. Their bodies inching up higher and higher as they grow just that bit taller putting Tobias as 4'2 and Roby at 3'8. The piece of resistance that gets the most moans out of both boys as their cocks throb bigger, thicker and fuller reaching a foot long already and ripping the front of their pajama pants with their orange-sized balls.
As the boys moan, they finally feel a tug from behind as a fluffy fox tail puffs out near their butt, and two fox ears pop up in their hair with their own hair growing startingly longer breaching past their shoulders. Roby's hair covering his eyes but as he turns to his brother he see's his green eye's with a slit in them. As the boy's transformation completes they both end up cumming onto one another before both slump onto Roby's bed.
The boys were panting, exhausted and exasperated after their first transformation, leaning up to look at each others new found form. Their bodies built like regular gymnast with a good fit form, Roby reaching out to touch his brother's pecs to feel if they were real. Surely enough they were pretty solid and slightly plump, Tobias doing the same feeling up his younger brother's 4 pack of abs and feeling the good cut he had their. In unison both boys let out a hushed "woah..." before realizing the fox tails they grew wagged behind them. "W-what....are these...real...?" Tobias asks before he grabs his newfound tail before feeling a surge of pleasure and weakness throughout his body. He slumps down on Roby's bed moaning a bit before he released his grip panting from the sudden great satisfaction he felt. He turned to see Roby giving it a try as well and feeling the same, with even his nipples perking up a bit harder from the sheer pleasure he was feeling. He manages to let go just the same but they look at each other with intrigue and wonder at their bodies. Before realizing that the two were still fairly close and their cocks were still throbbingly hard in front of them. The boys were blushing, looking at one another before finally the door to their room opens up and in comes the doctor.
As the doctor stares at his newfound children , he has a momentary pause before a smile creeps on his face. "Ahh good...good..it seems your powers are awakening." The doctor makes a little white lie to get on their good side. "P-powers..." Roby asks as he looks over his body, " Yes, you boys have the hidden sorta mystical fox or kitsune gene in you but seemed as though you weren't getting enough nutrition to manifest your powers just yet. " The doctor begins to explain. He continues to dabble here and there on how this was just the beginning of their changes and that they can worry about the nudity later but for now they should go downstairs to eat breakfast. As the doctor walks away he snickers a good bit before heading towards his kitchen.
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The doctor was in his kitchen when he heard a pair of groans coming from behind him, turning to see his new boys hiding behind one another. They seemed to have tried to put on their old clothes but their t shirts don't seem to fit exposing their stomachs already and they could only fit into their boxers. However their still hard-ons just stuck out of the undergarment being a bit to big to fit, the doctor simply laughs. "Like I told you, you don't need to worry about nudity here...mostly cause you boys are still growing.." The doctor continues as he puts down two plates for them to eat breakfast. The two boys eye's grow wide in shock.."Still....growing.." the two brothers say. The doctor nodding showing a small snippet of his research,a giant screen coming up from his gauntlet showing the boys status. "If my careful calculations are correct...you boys arent at your full potential yet..." the doctor shows as the body icons before the two were glowing. "h-how big...." Tobias asks...a bit worried. "Dunno.. that's kinda up to you...you boys are mythical beasts after all." The doctor says with a wink. The two brothers look at each other a bit nervously before eyeing the food. "Now I know you're hungry...so eat up..." The doctor coherse as he moves the plates closer and watches as the two dig in.
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"Well boys...imma go out and get some more food for you... why don't you guys just stay at home.." the doctor telling another white lie, while he does need to get more food for them it wasn't that far of a trip nor a necessity with his drones. He really wanted to slink away to his lab before their next growth sparks so he can watch em carefully. "if you need me...call me on this phone...." The doctor hands them each a phone to call him on before he waves the boy goodbye. The boys nod before waving goodbye in turn watching as the Doctor leaves and gets in a vehicle to leave. The boys look at each other with a slight smile. "T-this is kinda cool.." Roby says to his brother. "Its like we're... super-powered...like in the anime my friend watches" Tobias responds in kind with his brother nodding as well. "Hey lets go back to the game room," Tobias tells his younger brother before the two rush away towards the new destination.
Once there the boys seemed to have set up the dartboards in there as target practice, Roby, however, was a bit nervous as though they were going to get in trouble but Tobias convinces them that if they cant do it there won't be any harm done. "So now..since we are mystical beasts....just gotta figure out our...magic so to speak..."Tobias states as he stares at one of the dart boards. His mind going crazy with what cool super-powered stuff he could do if he had some. "Let me go first..." as Tobias does a bunch of gestures wild and crazy and even as far as goofy. Sadly nothing amounts from it as he sighs in disappointment. "Why didn't it work..." Tobias says with a frown before Roby walks up to his side. "Maybe it just needs a bit more thou-" before Roby finishes a bolt of lightning seeps out from his finger tips and shoots at the dartboard. With enough power to destroy it totally and leaving only bits and bobbles scattered everywhere. Roby, who had fallen over from the force of the sudden attack, stares stunned before turning to his brother with a shy gulp. "I-i...guess I was right...." Roby says with a shutter before doing his best to try again With this time two bolts come out of his hand before landing against the back wall.
"W-woah.....wait....hey.... no fair I want magic too.." Tobias says as he stomps the ground a couple times and points at the dart board before a fireball comes from him. The young boy falling to the floor in shock as the massive inferno blew up the rest of the dartboards. The two boys were so surprised from the blast they began to crawl back upstairs as quick as they could and attempt to not speak of this to anyone.
"Ahh...i see..." The doctor states as he been watching then from afar, his camera's tracking their every move and even going as far as to having their vitals on the side. His research into the mystical was going along swimmingly and he ponders what more these boys could bring.