You wake up, wondering about Yuna, when you notice a mass behind you.
You look back and watch in awe as you see an orange and white tail of a fox swishing back and forth. The more you thought of Yuna, the more you found yourself changing. As you thought of running through the forest with her, your back shifts, and you find that you are now a quadruped, with paws instead of hands or feet. You jump off the bed and run through the open back door towards the forest where you met Yuna, as you grow orange and white fur while thinking about nuzzling her.
You run into the forest, to the place where you first met her, now with fox ears, a fox penis, and a muzzle that was beginning to form. The beautiful vixen walks out of the bushes, and walks towards you, as your changes completed.
"I told you you'd join me." She said as she walked up to you, before licking your muzzle. "You're the perfect mate a vixen could ask for."
You blush as you wrap your tail around her, her elegant, delicate body arousing you to no end. You want her. You NEED her.
And you could tell she was ready too.