Anderson advanced toward Matt, his actions driven by the demon. But Anderson wanted this too. Years of torment were about to be avenged. Retribution. Anderson could taste it.
The football player stumbled backwards, not watching where he was going, and fell flat on his ass. Anderson chuckled, an evil sound. He casually stroked his foot-long cock, wiping pre over the thick head.
Matt scrambled backwards. "S-stay away from me, you freak!" he sputtered. He started to rise, turning to run.
With a graceful leap Anderson flew through the air, the agility of an acrobat mixed with the power of a weightlifter. He slammed into Matt, forcing the husky athlete to the ground again. Matt hit hard, the wind getting knocked out of him as he collided with the ground. He gasped for breath, eyes wide, staring at the beautiful monster that had been little Anderson just moments ago.
Anderson looked down at Matt, considering the senior. Matt was strong, for sure. Although there was a layer of fat, there was serious muscle beneath it. Anderson felt greed welling up in him. And envy. Even though his current body was superior to Matt's, he wanted more. Somehow, he knew how to get it.
Anderson stood and grabbed Matt, pulling the big football player up and tossing him casually over a shoulder. Matt's 250 pounds would have been impossible for most sophomores to lift, but Anderson's demon-possessed musclebody hefted the weight easily. Anderson trotted across a path in the grass next to a building and then ducked into a shed at the end of the path. He tossed Matt onto a few bags of grass seed and fertilizer then closed the door behind them.
Matt looked up at Anderson, eyes wide with fear. "Wha- what are you going to do to me?" he asked, his breath finally returned to him.
Anderson just chuckled. His voice was deeper now. Rich, and powerful. And there was definitely a sense of malice to it.
"Do?" Anderson asked, echoing Matt's question. "I'm going to do you, of course."
Anderson stroked his huge dick again. Matt quivered with fear, even as he felt desire wash over him. He looked at Anderson's oversized endowment and felt lust within him, his loins quivering slightly. Anderson saw it and chuckled.
"You want this..." the demon-enhanced boy stated. It wasn't a question. He stepped forward and began pulling off Matt's clothes. Matt tried to push him away, but there was no overcoming Anderson's power. And Matt wasn't sure if he wanted to resist... He looked into Anderson's eyes... they had never been so fiery before...
Within moments, Matt was naked. His strong, beefy body was almost as big as Anderson's. But Anderson was still bigger, and pure muscle to boot. The larger boy chuckled and ran a finger over Matt's hard seven inches. "I've got more..." Anderson purred, pushing his hips forward, rubbing his cock up against Matt's dick. Matt gulped.
Without further warning, Anderson surged forward. He grabbed Matt and hoisted the jock into the air, holding Matt's plump rump over his foot long beastcock. Matt gasped, and whispered out a half-hearted "fuck no..." But Anderson was having none of it. The muscular ex-runt slowly lowered Matt onto his thick, foot-long tool, eliciting a moan of pain and pleasure from the bully. Anderson chuckled with mirth as he pushed Matt further down, until finally all twelve inches were in Matt's ass.
Anderson pushed Matt up against a wall, and slowly began to pump, thrusting his dick in slow and deep. Matt groaned with pleasure, his own cock hard against Anderson's abs. "Oh fuckkkk..." Matt moaned, clawing at Anderson's thick pecs for support. The big demon boy just chuckled, and started slamming his dick in harder and faster. Matt's moans became gasps of pleasure, then cries of agonized ecstasy as Anderson fucked him even harder, roughly abusing the jock's virgin ass.
With every thrust, Anderson could feel some of Matt's power flowing into him. And the harder Anderson thrusted, the more powerfully he could feel the transference. He could feel his muscles getting bigger and harder, could feel even his cock growing as he powerfucked Matt with it.
Matt could feel himself weakening, but he didn't understand what was happening. He only knew that Anderson seemed to be getting bigger again, and Matt started trying to push the big beast away. But as his hands hit Anderson's thick and growing pecs, Matt felt his resistance fade. The sensations in his body felt so good now... he just wanted to melt... to submit... Matt's cock was rock hard, the only part of him that wasn't shrinking yet. It rubbed against Anderson's increasingly hard abs, making Matt cry out in pleasure. Finally Matt came, sending a stream of jizz all over Anderson's fantastic stomach.
The transference increased dramatically. Matt lost size in leaps and bounds and even his cock shrunk to match his small, scrawny body. Anderson was the opposite, roaring with lust and pride as he slammed his growing dick in hard, ravaging Matt's ass with rough, powerful strokes. Finally Anderson came as well, sending a huge load of cum into Matt's shrunken body. Anderson stood in place for a long minute, his big cock throbbing, before finally shoving Matt off. Without a further word Anderson turned and walked out the shed.
Matt's limbs were thin and weak, and they betrayed him as he struggled to stand. At last he managed though, and he took in the damage in a small mirror in the shed. He couldn't see everything, but it told him enough. He was a runt now. Five foot four, and not a pound over 125. He looked down in shame, and his four inch dick looked back at him, still hard.
Anderson, of course, had experienced something quite different. His dick was now a whopping fourteen inches long. It jutted from his hips, gradually softening, but still quite impressive. His muscles were bigger than ever, and he was quite tall. He paused to admire his reflection in a window, flexing slowly, grinning at the sight of all his huge perfection.
Within, the demon was pleased. He had taken over, of course, but Anderson had helped the process immensely. The loathing the boy had for Matt had been powerful indeed, enough to let the demon drain the bully of his size and strength and transfer it to this body. The demon longed for more power.