As Sam’s cock continued to change into that of a canine, Alex ran his hands down the sides of the future Kitsune’s body.
“Such a beautiful boy,” Alex said, resting his chin on Sam’s shoulder and began to suck on his neck. Sam let out a soft moan as Alex gave him a hickey.
When Alex finished with Sam’s neck, he moved his hands down to the boy’s ass and spread it apart. He moved his head down and pressed his face into Sam’s ass, rimming his friend’s asshole.
Sam’s moans rang in Alex’s ears, each one motivating him to do even better. The two boys were so caught up in their pleasure that they didn’t notice their hearing began to diminish before going away entirely. Then, just as soon as it had disappeared, their sense of hearing returned, only this time it was much better than it had been. Their ears were now triangular in shape and located on the top of their heads, with Alex’s ears being covered in brown fur and Sam’s ears being covered in golden-blonde fur.
When Alex finished rimming Sam’s asshole, he grabbed his cock and gave it a few good strokes to make sure he wasn’t losing his erection, which he obviously wasn’t. As he did so, Sam got onto his hands and knees, presenting himself to Alex.
“Come on handsome,” Sam said in a seductive voice, “Mount and fuck me like the animal you are.”
Alex grinned moved closer to Sam, getting up on his knees so he could properly line his cock up with Sam’s hole.
“You ready?” Alex asked. Sam looked back at him and nodded eagerly. Then, Alex began to press the head of his cock against Sam’s ass, prodding the entrance teasingly from a minute before he began to push it in.
As soon as Alex’s cock began to enter his ass, Sam let out a sharp gasp from the slight pain that accompanied it. The boy wasn’t used to his asshole being stretched like this, as this was the first time he’d ever had something go in there. After a few seconds though, the pain vanished, and an overwhelming wave of pleasure took its place.
Alex exhaled through his gritted teeth as he pushed his cock deeper into Sam’s ass. The soon-to-be-fox was so tight that his asshole squeezed Alex’s cock like a vice grip, and he loved it.
“You’re so fucking tight Sam,” Alex grunted, pushing his length up to his knot into the boys ass before pulling it out a bit and pushing back in. Sam’s only response was a soft moan and a nod of his head.
As Alex continued to thrust into Sam, he eventually found himself getting the hang of things and began to pick up speed. Before long, the future werewolf found himself collapsing on top of Sam, still pounding away at his ass. Sam was caught off guard by the sudden increase in weight that he was holding up, and he fell down onto the bed with his ass still raised in the air so Alex could fuck him doggy style.
“You like that you dirty fox?” Alex grunted, hammering away at Sam’s prostate.
“Yeah!” Sam moaned. “I love it! I love it!”
As the two boys fucked, fur began rapidly growing on their legs and arms. At the same time, their legs began shifting to become more canine in both structure and appearance.
“Gah...I thought...I thought that our...our changes...were supposed to happen…over two days…” Alex grunted. The boy began to slow down his thrusts as he began to think. “Maybe sexual stimulation...speeds up the process?”
As Alex was trying to figure out what was going on with their transformations, Sam was too blinded by lust to think straight. Without hesitation, the boy moans “Then change me Alex! Change me!” His plea quickly makes Alex stop thinking about what was going on and bring his full attention back to Sam. Without warning, the transforming werewolf pulled his cock out of the blonde boy’s asshole and moved Sam so he was laying on his back.
“Wait...what’s going on?” Sam asked. Alex simply grinned and said “Now I can see your handsome face while I fuck you,” before slamming his cock back into the changing kitsune’s asshole and going to town on it. Sam let out a high pitched moan of pure ecstasy.
“Yes! Change me Alex!” Sam moaned. He could feel his tailbone extend out above his asshole, creating a new appendage that was quickly covered in golden blonde fur before it was quickly accompanied by eight more just like it. Sam now had nine beautiful golden blonde fur covered tails underneath him.
Alex’s changes weren’t far behind, as his tailbone extended like Sam’s did. He shuddered in a mixture of delight and pleasure as a pins and needles sensation filled the new appendage for a brief second before it was quickly covered up by brown fur.
As Alex continued to rapidly thrust into Sam’s eager hole, their bodies were quickly being covered with fur. Within a few minutes of them changing positions, the two boys resembled animals more than they did humans, save for their heads. But this wouldn’t last for much longer.
“Fuck Sam...I’m getting rrrrrrrreal close…” Alex growled. He clenched his eyes shut and grit his teeth as he felt his skull begin to change.
“Yes! Put your seed inside me!” Sam screamed.
“Sam...I...I love yoooooooooooooooooooooou!” Alex threw back his head and let out a full blooded canine howl as he slammed his knot into Sam and shot his massive load of warm canine cum into his friend’s ass. As he did, both boys felt a pressure in their skulls as their mouths and noses grew away from their faces and formed into canine muzzles. Their noses then flattened, quickly changing to a black color as their teeth and tongues changed to fit their new mouths.
As Alex’s orgasm finally concluded, he laid down on top of Sam, pressing their furry chests together. Out of instinct, the werewolf began to lick the side of the kitsune’s muzzle, like some kind of canine kiss.
“That...that was incredible Alex…” Sam panted. “And you...you look...amazing…”
“Same to you, handsome,” Alex said, running his clawed hands down Sam’s sides. “You’re my sexy Kitsune.”
“And you’re my handsome werewolf.”
The two canine boys held each other close, kissing and spooning like there was no tomorrow.