Corey held his brother’s naked body in his arms as they kissed. Kyle didn’t struggle. He kissed his brother with passion and ferocity never attempting to speak. Rather than try to escape, he ran his hands through his brother’s fur, feeling the hard muscles beneath. After more than five minutes Corey finally broke the kiss. “You didn’t respond….You get both, stud.”
Kyle just grins and responds with a whinny. Any sense of guilt, fear, or regret had been purged by witnessing his brother’s transformation. He looks up into his brother’s blue eyes with a smile. “Do it to me.”
Corey tosses his mane by flicking his head. His unruly bangs finally clear his eyes allowing his brother to read his lustful smile. “Your body will change. You will become the ultimate embodiment of equine sex my brother. You will become a demon just like me with powerful pheromones, insatiable drives, and the ability to seduce any male or female you encounter. You will always be my big brother. You will be beautiful and we will fuck often.” Corey passionately kissed his brother again as their equine cocks both hardened trapped between their naked bodies.
At this point the rank smell of equine sex was incredible. It acted like an intoxicant making both the brothers, and the cloaked Donk very giddy and horny. “For your dare my brother, you will present your ass to me for a proper fucking. You will let me drive my equine cock into you and fuck you like an animal as you assume your new form.”
Kyle whinnied with glee. He broke their embrace and lay over the side of the cum soaked bed presenting his ass to his equine brother.
Corey clomped over to his brother. He bent down sniffing Kyle’s ass, just the slightest hint of equine pheromones. That would change shortly. He grabbed his hard equine tool and began stroking causing a nice glob of pre to form on his mushroom shaped head. He coated his hand and ran his fingers up and down Kyle’s ass crack. He then reached across Kyle’s body and smeared some pre on his human face.
Kyle moaned at the warm slickness and the incredible and inescapable muskiness. He squirmed causing his ass to wiggle in the air. Then, the itching started. Kyle snorted and took his hands off the bed to scratch at the base of his cock.
Corey took a fresh load of pre from his pendulous cock and coated his fingers. He slowly penetrates his brother’s anus with one finger eliciting a high pitched shrieking whinny from Kyle. Slowly he added more fingers as Kyle’s anus loosed.
Kyle’s body shivered at the invasion of his ass. He was scratching all over his crotch and thighs by this point as long, creamy fur spread all across the region. The itching was intense and spreading, his fully erect cock slapping his chest as he moved and scratched.
Corey stepped back from his brother. He grabbed his nearly 2 foot cum slick equine cock and angled it down to his brother’s ass, resting his mushroom head over his brother’s hole, then he started to push.
The pressure on Kyle’s ass was tremendous. He let forth an equine scream, but rather than try to stop, he grabbed the bed and pushed back into the pressure, forcing the mushroom head into his ass. As he did so, another change occurred. The tremendous itching was replaced by incredible sensual tickling. Even the giant plunger in his ass became amazingly pleasurable. The now laughing Kyle wriggled his ass causing his brother to neigh and snort in equine pleasure.
Corey grinned as his brother transitioned through the worst part of the change, from here it would be nothing but pleasure for him. He could see black fur growing across his brother’s ass. He wanted to touch it. Corey leaned forward sliding a few more inches of his cock into his brother’s ass. Corey looked down grinning as he realized that there was still more than a foot to go.
Kyle moaned and snorted. He pawed the carpeted floor with his right foot. He felt muscles he didn’t even know he had come alive as they seized his brother’s cock as started to massage it. He soon realized that he could control those muscles and made them clamp down even harder causing his brother to snort and stamp his hoof.
Kyle was overcome by amazing sensation as his hair and ears grew. Black bangs fell down obscuring his vision and making him toss his head. He felt locks spilling down over his shoulders and down his back. He snorted and pawed the floor.
Corey watched his brother’s tail sprout and grow, it’s long hair spilling over and tickling his mottled cock. Corey grunted as he started to pound his brother’s ass. His cock moved a little further in with each thrust making him gradually walk forward towards his brother. He could smell his brother’s stallion scent now. He would indeed be a fine breeder.
Corey watched the dense black fur on Kyle’s ass grow up his back to meet the wild mane descending from his head. The mane stopped just above the base of Kyle’s long black tail. Corey could see the points of Kyle’s ears penetrating his mane, getting higher and higher on his head.
Kyle’s legs felt strange. He felt the urge to stand on his toes. As he did the fur rapidly spread down his legs as his toes formed into proper hooves. He swooned slightly as his balance changed, Ironically his brother’s cock in his ass prevented him from falling forward as his legs lengthened and his hips grew wider.
Corey reached around and grabbed his brother as he grew taller. His cock was now completely inside Kyle and his furry sack slapped Kyle’s ass as they fucked. His stallion scent was intoxicating. Corey let loose a thunderous neigh as he shot his stallion load into his brother, who responded by spewing cum all over the wall as his cock grew a couple of more inches.
Kyle moaned as every muscle in his body seemed to inflate at once. He grew taller still as his torso lengthened, his neck also grew a little even as it became heavily muscled. His pecs and abs swelled to a size that would make any body builder proud. He arms also grew huge and filled with enormous strength. Long feathers like his brothers grew on his ankles and wrists. Were he able to stand he would realize that he was now a full foot taller than his brother. His face pushed out into a sexy half muzzle as it was covered by cream colored fur. He was now a striking Clydesdale in black and cream.
Corey continued to pound his now equine brother, “Having fun yet??” He couldn’t help but grin.
Kyle neighed and stomped his left hoof. “Hell yes, this is awesome. Don’t stop.”
Finally, Donk could take no more. His cock had been painfully erect all morning watching this show. Besides, they were lust demons now so different social rules applied. He promptly dropped his cloaking spell and approached them to ask the question he had been dying to ask all morning, “Mind if I join you??”