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Jack hilted firmly into the cat beneath him. The middle-aged otter grunted lightly, feeling the powerful flexes in his pelvic floor as he pumped his release into one of his newer boys.

Circ rode out his own peak, the housecat having made a mess of his flat belly from the treatment of the much larger male. He panted heavily, letting out a soft mewl as the lutra's powerful arms lifted him from the bed.

A ring of muscle surrounded the cat's head and shoulders as the otter's arms brought the spent young man to his broad chest. Jack rumbled softly, nuzzling one of Circ's pointed ears. "That's a good kitty~" He praised warmly, his grip tight and tender at once.

Purring softly, the housecat nuzzled into Jack's chest and neck, awash in warm feelings from his peak and also the volume of warmth directly pumped into his bowels. Circ blushed softly, looking up at the otter. "Daddy?"

Jack smiled and kissed the cat on his brow, "Yes, kitty?" He loosely curled his long, powerful tail around to add support to the feline's back, but didn't relent with his tight embrace.

"I wish I was more like you..." Circ said quietly, his voice full of admiration for the older male.

The lutra was quiet for a moment, in thought, before planting another soft kiss. "You know your older brothers?"

The feline blinked, then remembered that all of those handsome, wonderful otters that shared this space within Jack's soul... they called themselves big brothers to all the non-otter boys around. "Yeah...?" A thought struck him, and he smiled eagerly, hoping that what he thought was the truth.

"Most of them weren't otters when they first arrived," Jack said warmly. "They wanted to be more like their daddy, too..."

Circ mewled with a grin. "You can do that for me too?"

The middle-aged otter chuckled. "It won't happen overnight... these sorts of changes have to go at a rate the mind can adjust to them, or else you'll just feel like you're in the wrong body." Jack nuzzled affectionately. "Understand?"

The housecat nodded firmly.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

It was hard to tell time within Jack, but day and night were fairly easy to distinguish, especially with how Jack was only directly present within when he slept. Circ knew, then, that it was only the dawn of the next day that he was looking for the umpteenth time in a mirror, searching for any changes...

Then he realized. His ears weren't triangular anymore. He ran his hand through his brown hair and felt the rounded lobes against his paw, giving one a squeeze. Perhaps the way that he almost missed the change is what the older otter meant about letting his mind adjust. Despite the fact that they were different... they were his ears.

Circ ran his fingers through his hair again, but this time realized that the spaces between his fingers were rather sensitive. He brought both paws in front of his face and spread his digits. His claws didn't appear to be retractable anymore, at first glance. The sensation he felt, however, came from how the slight natural webbing between his fingers was spreading up to his first knuckle.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

A few days later, Circ rounded a corner, turning away from a nearby sofa. His tail heavily swung and thudded into the couch's back. The feline perked, pivoting to look over his shoulder at his tail. The rear appendage had normally been a fairly fluffy affair, with a thin, hardly dexterous core. Now, the girth that he usually attributed to the length of the soft guard hairs was clearly the flesh underneath thickening and growing more muscular.

He was properly growing a rudder!

The cat grinned, before he noticed something out of the corner of his eye. While his head was craned over his shoulder, he caught sight of his deltoid. The muscle group was standing out more than he was used to, having been accustomed to having to be drenched to even show off with a flex.

Circ raised his opposite hand to rub over the muscle, flexing. The mass between his fingers firmed up, but he also felt his chest push against his arm. The feline's smile grew wider as he trailed his hand from his shoulder to his pectorals, feeling the new size and definition beneath the fur. He turned his head and raised his other hand to feel that arm's bicep, giving another flex.

He didn't care if anyone was watching him, he was getting swole and he didn't even realize! Circ planted both webbed paws onto his belly, expecting to feel abs, but instead he felt a round, firm tum. Rather than disappointment, his grin only got bigger... Big tum, big muscles... just like Daddy~

The changing cat spent the rest of the day with a dumb grin plastered over his increasingly whiskery muzzle.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

Towards the end of the week, Circ had set up in front of that mirror again, eyes focused on his hair. It had always been fairly shaggy, but the color had lightened. It was blonder, but in a way that looked like he spent a lot of time out in the sun.

He leaned in close, examining each individual hair, before standing up straight again. He raised his defined arms and flexed, grinning at his reflection. His eyes trailed over the beautiful sculpted body he was sporting now, very little left to show that he was supposed to be a cat. The main trait remaining were the slitted pupils in his eyes and a bit of residual fluff preventing the tip of his rudder from looking quite so sleek.

That didn't matter. Circ finished his flex with a slap of both palms onto his gut, watching the ripple in his flesh go from the round dome to his relaxed pecs. His swim shorts strained beneath the curve of his belly. He chuckled in amusement. "Went and made myself horny again."

The former feline pivoted and went off in search of a cute boy he could sate his lust with.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

Circ swallowed firmly, a pair of wiggling deer hooves sinking into his whiskery muzzle. The muscle-gut otter groaned blissfully as he felt the form of one of his little bros filling his gut. He opened his eyes, pupils round as any of the other otts' in Jack's home, and thudded his powerful rudder into the couch behind him.

"You came out wonderfully." Jack was there, smiling.

Circ perked and turned his head to look at the older otter with a dumb grin, "Thanks Dad!"

Jack gave his son's belly a rub, squeezing affectionately at the form squirming within. "You're welcome. You take care of your little brothers, alright?"

The blond otter belched crudely, a pair of underwear flying out his mouth. "Already on it, Dad."