You walk in on two foxes copulating before they finish up and notice you. You were too late to have noticed the vixen becoming one.
She look over and notice the man who has walked in on the two of you tied together. She and the male fox look at him with your mouths open in something like a laugh as she thinks he would make a great sister for you. The fox man pulls out of you with a loud wet pop and walks over to the man, smiling coyly.
“Would you like to join in with us for fun?” he tells her.
“But I’m not attracted to males” you say, causing something like a grin to appear on the vixen.
“If you take out your cock…and put it to my sheath…you could make me more like her” as he gestures to the vixen. Of course he doesn’t wait for an answer as he undresses you and before you know it, he is licking your chest and the head of your cock is pressing against his sheath.
He starts rutting against you hard holding you against the wall. “this-feels sooo good” you stammer. Your barely noticing the potent feeling of change in you, but sensing the wrongness you try to not be so submissive, trying to overcome the male. When you feel the paws of the vixen grip you and throw you onto your back and the male comes down on top of you. Still thrusting into you with grunts of pleasure.
He and the vixen grip you with their inhuman strength as you realize that the fox’s cock is pushing into you, having caused a change as you see your sack turn into feminine lips and a wet tunnel made for the large cock of the fox as the vixen just giggles in your ear. As waves of pleasure slip over you.
“Soon I’ll be all the way in little vixen” he says.
You've lost, and he's won. You're quickly on your way to becoming a vixen, and there's nothing you can do about it. You squirm, trying to get away, but it's useless as your arms become more slender, fur spreading faster as he's able to push deeper inside of you. White fur covers your stomach and chest in a soft pelt as red fur sprouts from your sides and back. Your legs become shapely even as they alter proportions, feet lengthening as your legs shorten, becoming digitigrade as your toes grow small blunt claws. Your feet have become paws, black fur covering them and going up to your higher ankle.
You whimper in a vulpine way trying to struggle more as images fill your head. Your head muzzle forming completely, changed all the way into it’s vulpine nature. The instincts of your new body spread your legs for the male so he can go all the way in.
Your nipples swell and four more form on you as you grow six breasts, you should have them you think your female and will be bearing young. The images grow even stronger in your head bringing immense pleasure. You see yourself on all fours, your tail lifting out of the way to mate with the male, of standing by him with your sister, both of your bellies swollen with young. Of two vixen tongues cleaning the offspring as they are given birth to. You realize you want this as you come out of the mental imagery. Your paws reach up and encircle him as you buck against him, holding close to him.
Your hot cunt pressing hard against him, trying to knot with him, your desperate to be filled with his cum fulfilling your feminine purpose.
The two foxes are grinning at you wildly as he says. “Now with my seed you will become my vixen forever” as you feel it happen his hot cum is shooting deep into you, sending you over into your own climatic orgasm. Your body shudders in warm bliss, as your mind tells you that the change is permanent and that you belong here with your mate and sister.
You look up at him with a grin on your face into his golden slit pupils, knowing that yours are exactly like him.
“Nice little vixen, a pair of sisters to fuck whenever I want, isn’t that right?” he says.
You nod your head, smiling and licking your lips with your new tongue, knowing that he's right. After all, he's your mate, and you belong to him completely. “and we will want it whenever you can give it”