Demonstrate

You're happy to sit next to Doe and Renee, watching their ears perk up and their tails twitch as they talk to each other. They look so similar - they have the same eyes (even if not the same eyes they were born with), the same facial structure and they differ in height by only an inch or so, Renee being the slightly shorter but more muscular of the two. Doe's breasts are small B cups you would say and Renee's are either small B cups or large A cups. In both cases their chests appear larger thanks to their lithe frames.

Doe and Renee finally run out of things to say and each puts her arms around the other, hugging and crying tears of joy at being reunited and safe. You start to stroke their shiny fur, thinking about the future. There's no question, you want to take Renee's virginity this very night. Doe will help you, why wouldn't she?

But more than that, the thoughts running through your mind are about children. You hope to see Doe and Renee's taught little bellies swelling with new life, but what form should it take? You wrap your arm around Doe's side and silently cast a detection spell. Sure enough, something has begun to form within her.

Damn! The tiny life inside her is flawed and will die off in days. With such radical changed you should have expected this. Right now Doe and Renee can breed only with a catboy. They have changed too much to mate with any human male. Unacceptable! You'll find a way to breed them and it certainly won't involve some catboy stud.

Now you slide your other hand around Renee's side and cast another detection spell. A little light magic touch and her body will ripen for your seed. You're about to cast the fertility spell when you feel that her body is already prepared.

Knowing that the virgin in your bed is as fertile as can be your cock hardens a little more. Doe breaks off the hug and looks over at you "John, could you help Renee? The sex we've been having feels really good. I think it helped me recover faster."

Renee looks unsure, but Doe strokes her head and promises it will be great. You tell Renee "It's up to you. I understand if you're too tired or too overwrought, but I would be happy to help."

"OK, I want to try but I don't know what to do."

"Don't worry. Doe didn't know either. Just leave it all to me." You begin to gently massage her shoulders, then you run your fingers down her spine and kiss her. She's a quick study and it doesn't take long before your tongues intertwine. Your hands move to her perky breasts and you feel her moan through your mouth.

Renee's eyes open and you feel her legs closing around your waist. "And you said you didn't know what to do. You're a natural Renee."

She pulls back and smiles at you playfully. "Doe was saying something about another part."

"Don't worry - it feels just as good for me." You push her back onto the bed. Doe is sitting cross legged to the side watching, her hand absently stroking her tail. If she had her memories you doubt she'd be so excited about watching her sister get fucked.

You slip your finger into Renee's pussy and you find her completely soaked and warm. You press deeper, sliding in far enough to find her hymen, still intact despite her age and her obvious athleticism. There's no need to warm her up any further, so you pull off your clothes and place your solid pole at her entrance.

As you rub against Renee's cunt lips you feel them part slightly. She's a virgin and she's tight but with so much lubrication you wonder if you could slip inside without using your hands. With careful strokes you rub your cock against her slit, squeezing her juices out onto her lips. Finally you plant your tip against her and push in slowly.

Renee's head tilts back and she purrs gently. You look at Doe again and you can see the excitement and lust in her eyes. She's stopped playing with her tail - her hand is now stroking her sex as she waits for you to deflower her younger sister.

Almost muscle by muscle you feel Renee's cunt loosening. You whole head is inside her now and you know you could thrust to the root in one stroke but this feels too good. Renee's eyes are shut tight and her lips are parted. Whenever you move you can see her sharp teeth clenching together or her tongue flick around inside her mouth. Her tail is always moving, smacking against your knees.

You stroke the fine fur of her breasts and her head turns from side to side. 'How close is she?' you wonder. Your cock slides deeper and you come to rest against her maidenhood. You press a little harder and feel it tear. A virgin no longer. You stop, giving her time to adjust.

Renee's eyes open "Please don't stop - It feels amazing!"

You though women were supposed to hurt after that. Oh well, no reason to argue - you've got a smoking hot virgin catgirl impaled on your cock and she's begging for more. You sink in until you've hilted in her. Renee doesn't make a single complaint, in fact you feel her squeeze your cock with her tight little pussy.

A few slow strokes in and out and Renee shudders and lets out a massive moan. Doe draws closer to her sister and says "See, I told you it was great."

"Wow." is all Renee is able to manage. You wait for her orgasm to slow down a little, then begin to thrust a bit more vigorously. Like her sister, Renee enjoys this even more. "Oh yes, oh yes! I want more. Please more!"

You feel your own orgasm drawing nearer, your balls ready to shoot your sperm into another fertile womb. You barely manage to slow down and hold it off. You want Renee to cum again. You really begin groping her breasts and you grind the root of your cock against her clit. Renee goes wild and her inner walls begin to grip your cock again.

Time to push as deep as you can. Her red hot pussy milking your cock drives you over the edge and you fire stream after stream of cum into her waiting womb. Renee's legs wrap around you, her instincts ensuring you couldn't pull out if you wanted to.

You are lost in bliss for a moment, but the sound of Doe cumming pulls you back. Your first and favorite captive has frigged herself to orgasm watching you breed her sister. You smile at her, letting her know it's alright.

"Oh, I was going to wait my turn but that was so . . ."

"Hot? Sexy? Erotic?"

"Puurrrrrr" is the only response you get from Doe. Looking back you find it's also the only thing Renee is capable of right now.

The three of you slip into bed together and you put an arm around each of your catgirls. Looking from one side to the other you find all the encouragement you need. You will create more like them. You will find their cousins and nieces and transform them too. You will find just the right way to change their wombs so you can breed them. You will make enough catgirls that in a century or two everyone will accept them as normal. You will, literally and figuratively, father a new race and Doe shall be their eve.