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Tom had been dating Sam for a while now but they could never get him to stick around on a full moon. Sam seemed like a cute and innocent cat to most that met him, and they were usually right. However when a full moon came around he'd run off to an unknown location to prevent his werewolf side from harming anyone. Even though Tom had been repeatedly warned about the risk he couldn't help but want to see it and even fool around with it.

That was about to change since Tom had come up with a plan to keep him around that day, after all what's the worst that could happen. Swapping out the calendar while they weren't home and changing the day of the full moon on it as well as changing the notification on their phone. The timing of his plan seemed perfect too with it nearly being halloween now.

Sam was still home despite it being a full noon tonight and his plan seemed to be working since they made no move to leave for their hideout. Part of Tom wondered if the werewolf thing was even true or if Sam had been lying about it to get out of the house. Night was quickly approaching as Tom poked his kitty's back before saying, "Wanna head to bed early to watch stuff?"

"Sure I guess, are we actually watching stuff or are you wanting other things?" Sam asked as they got up and gave the fox a kiss on the side of his muzzle.

"Probably watch something first then if we're feeling frisky we can do other things." Tom pulled the cat along to the bedroom, already in their pajamas as it had been a lazy day for them both.

"Did something new come out? You seem awfully eager about this compared to usual." The cat was certainly confused about what was going on but went with it regardless. "Not that I'm complaining, I love spending as much time with you as I can before I have to lock myself up for a whole night."

"Not that I can think of, I'm just looking forward to tonight." The fox said with a sly grin on his face.

There really was nothing new to watch so it didn't take long for Tom to get bored and try to rile up Sam by groping at his crotch. Sam welcomed the attention and a purr could be heard as the fox continued to play with his crotch. The purring got more intense once Tom slipped his hand in Sam's pajamas and rubbed his paw pads along the fur of his sheath and balls directly.

Sam's mind had already started to get affected by his transformation as it drew near but his lust overrode his rational thinking. Normally he'd take this as a sign he was going to turn but now all that was on his one track mind was destroying his fox's ass. He'd grab hold of Tom and flip him over, getting a surprised squeak out of the fox. Not that he'd really complain especially once his pajamas and underwear were pulled off. The feline's own clothes were removed soon after and he started to grind against the plush ass of the fox.

Tom had his muzzle buried in the pillows as Sam grabbed hold of his arms to keep him pinned down against the bed. The feline's shaft was already halfway out of its sheath with pre starting to leak out of its tip. Before he could tell the cat to get the lube first, he felt the tip of the feline's shaft start to stretch him open and groaned a little uncomfortably in response. It didn't last long at least as the pre lubed up his hole and the shaft a bit while he adjusted to the intrusion.

The transformation started to take place physically, causing the feline to thrust harder into the fox. Sam's grip on Tom's arms became stronger with the werewolf claws starting to replace the feline's retracted claws, causing them to dig into the arm. Tom meanwhile was enjoying all of it and moaned into the pillow while his boyfriend started to ravage his asshole.

Aside from the dull claws digging into him and Sam's increasing size, Tom was quick to notice the change in his boyfriend's crotch. The soft barbs on the feline's shaft had melted away with the shaft smoothing out. Its shape then changed slightly as well as an increase in size. Tom's tight ass got stretched further by the second as Sam's average sized dick grew to the point that Tom felt like an entire arm was inside of him.

Sam started letting out a deep and rumbling beastial growl the further along he got in his transformation with his brain so clouded by his lust that he gave into his werewolf self.A small part of the feline knew he should stop but he was too far along now to stop, plus the fox's ass felt so good. The feline's once slender swelled out with the werewolf's strong muscles which could be faintly seen for a moment under the feline's orange fur.

The orange tabby cat fur shifted quickly to pitch black and grew out a bit before getting more dense. This hid what little definition you'd be able to make out of the werewolf's muscles fairly quickly. Sam's once well kept and groomed fur soon looked completely wild and unkempt once it had finished changing across his entire body. Especially the tail which went from slender and sleek to thick and bushy.

Tom could faintly feel the once soft paw pads on Sam's hands became rougher as they rubbed at the skin beneath his fur. The larger hands then wrapped underneath him before Sam hugged the now smaller male against his chest. A blush appeared on the fox's muzzle as he felt his partner's muscles. Part of him wished he wasn't getting pounded in the ass right now so he could gaze upon his boyfriend's other form. There could always be time for that after he was done and tamed this beast though.

Sam's muzzle then spread open and bit down where Tom's neck met his shoulders. A small whine could be heard from the fox as Sam had bit down on him rougher than he ever had previously. It hurt a little but wasn't so bad that he couldn't enjoy himself. Plus he kind of liked how much more dominant and in control of the situation Sam was tonight thanks to the transformation.

He got to feel Sam's head change in shape as the feline's short muzzle turned into that of a large wolf. By the time it was done growing out, Tom could feel the tip of the snout over the top of his chest and every detail of the feline's teeth changing into canid. Especially the two large canine teeth at the front as they dug into his flesh. Part of the fox was nervous about the wolf clamping down further and piercing his flesh but was confident his boyfriend was still in there somewhere.

Tom grasped at his belly and felt the bulge of that massive dick in his belly as it pounded away at his ass. He hoped things went well tonight because he could certainly do with being bred by this form more often. Even if it meant that he probably wouldn't be able to walk for an entire week afterwards. Once the enormous knot pressed up against his ass however the fox was a little worried that it might split his poor body in half. There was nothing he could really do to stop the powerful beast from putting it inside of him though.

The last remnants of the feline were quickly fading, leaving only the werewolf who was nearly twice their original size. Their bed creaked under the weight especially as the werewolf thrusted hard into the fox, making the whole thing rock. A neighbor could be heard yelling for them to quiet down which made the werewolf's muzzle let go of Tom to let out a loud and angry growl. It shut them up fairly quickly for now at least, allowing the werewolf to enjoy the fox.

While externally the transformation seemed to be all but done, the curse however detected it had more to do. Identifying the fox's tight flesh around the werewolf's shaft as something to claim. After one more thrust the werewolf's knot would go into the fox, getting a loud groaning moan out of them. With that the curse went to work on claiming the fox, melding their insides with that of the shaft.

At first Tom didn't notice anything was wrong and just enjoyed the feeling of being filled with the massive length. However before long that feeling would go away and the throbbing feeling of the shaft suddenly started to go throughout his whole body. He was confused as to what was happening especially once his legs and tail started to feel funny. Almost like they weren't even there but yet were.

It wasn't until the werewolf rolled onto his back that Tom was able to lean up and see his legs and tail were actually gone. He was however able to spot the werewolf's balls of which seemed much larger than they should be. Another throb pulsed throughout his body and Tom thought it was strange that the werewolf had not filled him with their seed.

Investigating further, Tom noticed his own dick and balls were gone, making the fox panic a little internally. Then as he reached down to feel over himself, the fox wouldn't feel his fur where his hips should be but rather the smooth flesh of the werewolf's fat knot. Tom couldn't begin to process what was happening to him especially once he saw his belly fur start to melt away.

He wouldn't get that long to process it however as the werewolf's strong arms wrapped around his torso and held the fox against them. Tom wanted to look but was quickly distracted by the werewolf's muzzle embracing him in a kiss. The fox closed his eyes as he enjoyed the embrace from his boyfriend's other form, thoroughly distracted from what was happening to him.

Those large hands rubbing over the fox's torso felt amazing but he wasn't sure why. His body had never been so sensitive before but now every little touch over him seemed to be followed up by a throb from the wolf's shaft inside of him. Tom hardly even seemed to really notice when those jaws spread open and took his entire head within them. The tongue slurping over his head made the fox giggle a little as he started to lose all rational thought.

He did however find it a bit weird at one point when he seemed to cough up a massive glob of pre. Tom even tried to swallow it back down but found he was unable to or even make a noise at that. The fox just thought it must be a dream as he couldn't comprehend what was happening to him.

Sam's hands didn't even feel like they were going through his fur anymore as they rubbed over his chest. The fox had never even felt cold before but now he could feel the air against his very skin as if all his fur was gone now. He tried to rub at his own body but the fox found he was unable to. Tom's arms were gone now much like the rest of his limbs and his body's shape was almost indistinguishable from that of a wolf's shaft.

Tom's thoughts were of nothing but bliss as the werewolf's lust filled his entire body and every little touch felt like it was sending him over the edge. Right before the fox's mind slipped away forever he could feel the werewolf's orgasm come pulsing through his body and into the jaws of the great beast. His body rapidly completed its transformation into the werewolf's shaft, making him a part of his boyfriend forever.

The werewolf had swallowed a mouthful of his cum before letting go of the shaft, making a mess of the wall behind him as well as the bed and some of the room. Not to mention his own fur but they weren't worried about that right now. Rather the wolf enjoyed the rest of their orgasm, licked the side and head of their now larger shaft thanks to the fox.

They were in a rather good mood for once as the beast usually found himself in a cage, locked away for an entire night. He knew the fox's scent from the clothes that laid near the cage and was happy to finally meet the familiar smell. Though now the fox was his to enjoy and not just the feline's.

Licking over their muzzle, the werewolf was hungry but they were mostly satisfied with their claim. That was at least until he heard the annoying neighbor once more and decided they had better have their fill before they are trapped in a cage once more.

In the morning, Sam woke up in the middle of the forest and was completely confused how he got there. At least until he recalled the previous night and realized what had happened. The feline went into a panic internally as he looked down at his belly and noticed it was a bit bigger than usual but also that his crotch was also a few times bigger. He had done it, after years of being careful, he finally managed to mess up and eat his boyfriend. Part of him was terrified to even go home as he couldn't bear the thought to look inside.

Sam tried to recall what had happened last night but everything was fuzzy. His head even started to hurt as he thought about it too hard. Small flashes started to come to him though and he had chased someone, maybe even multiple people but none of them were Tom. Then it finally came to him and Sam couldn't believe the clouded memory at all and yet it looked like Tom had been transformed along with him.

Groping his crotch, the feline wasn't able to fully grasp his balls and sheath with both paws with just how much larger it was now. It was hard for him to believe and yet it made sense considering just how much bigger he was. "I'm so sorry Tom, I swear I'll take good care of you and not let it happen again."