Misaki sprinted into Akane's dorm, surprising the two-tailed vixen. "Oh, Misaki-san! You startled me. What's the emergency... and why are you naked?"
"I'm in the middle of my yokai transformation ritual," Misaki explained. "The witch says I need to sleep with a kitsune to finish it. So... would you... would you like to lend me a hand... or a dick?"
Akane laughed quietly. "I would love to, Misaki." The willowy kitsune hastily undressed and playfully waggled hir hardening cock at the entranced Misaki. "Ready?"
"Yes," Misaki blushed. Shi bashfully ran hir fingers over the kitsune's half-erect dick, bringing it to full mast with hir stimulation.
Akane lay down on hir bed and beckoned Misaki to join hir. The human knelt over the anthopomorphic vixen and lowered hirself onto hir partner's vulpine cock, biting hir lip as shi felt the rod straining against hir inner walls. Once shi was used to the sensation of being penetrated, Misaki got to work and began bouncing hirself up and down on Akane's dick. As shi bounced, Misaki grabbed a hold of one of Akane's two tails and fondled it, captivated by the silky softness of its bushy red fur.
"Do you think my tail will be as lovely as either of yours?" asked Misaki.
"I'm sure of it," Akane said, an assuring smile on her vulpine face.
Misaki continued to bob up and down on Akane's cock. The kitsune sighed contentedly, enjoying both the feel of Misaki's pussy clenching around hir shaft and the human's plump nutsack bouncing against hir pubes. Soon, Misaki reacher hir climax. The human's cock painted hir own face with cum as hir pussy shuddered. The tightening of Misaki's cunt around Akane's dick soon pushed the kitsune over the edge, and hir cock spewed a mighty load of foxy jizz into Misaki's waiting vagina.
Utterly spent, Misaki collapsed on top of hir partner, cuddling Akane's firm, furry tits. How delightfully soft they felt! Suddenly, Misaki began to feel different. Hir skin was beginning to tingle. Shi looked at hir arm and shi was startled to see little red hairs growing all over it. Soon, the hair thickened into a coat of lustrous orange fur. Not content to stop there, Misaki's body continued to change. The bones of hir feet cracked and popped, reshaping into paws. Hir nails grew long and clawlike, and hir breasts expanded a few cup sizes as additional buds swelled below them. Misaki felt a tightness just over hir butt, and a shock of voluminous red fur exploded like a firework from hir tailbone. Shi actually had a fox tail!
"Wow, Misaki!" Akane grinned. "Look at your tail! It's even more beautiful than I imagined!"
"Same," Misaki chirped. "Though I guess having two like you was too much to hope for."
"You just have to be patient," Akane cooed. "Inari gives out more tails in time." The kitsune planted her soft muzzle on Misaki's lips, kissing hir transforming partner.
As Akane kissed Misaki, Misaki's own face began to change. Hir mouth and nose pushed out into a vulpine snout, hir teeth sharpening and hir tongue taking on a more foxlike shape. Akane entwined hir own tongue with Misaki's as Misaki's ears grew long and pointed before creeping up the the top of hir foxy head.
"Wow, look at you now!" Akane said brightly as shi broke the kiss. "You're a kitsune now, and a gorgeous one at that!"
Misaki admired hirself in Akane's mirror. "I really am. Wow, I... I never thought I'd be able to compare to a creature as beautiful as you, Akane."
Akane just laughed. "Me, beautiful? Maybe if I were a little chubbier. That's why I came to Kyūri Sensei's sumo heya, after all."
Misaki laughed back. "Fat or thin, all kitsune are beautiful. Hey do I have any magic powers now?"
Akane inspected Misaki's kitsune body. "You've only got one tail, so you've only got one power: the power to assume a human disguise."
Eager to try it, Misaki turned back to the mirror. Shi concentrated on returning to hir human shape. Slowly, Misaki's muzzle shrank back into a human face, hir tail and extra breasts receded, hir paws became human feet, hir fur vanished, and her vulpine dick reshaped itself into a human one.
Misaki shook hir head. "Not even half as gorgeous as my true form. At least I'm still a futanari."
"Of course you are," said Akane. "You had that penis before you became a kitsune, so it's part of both forms."
Misaki shifted back into hir true kitsune form. "Well, I'd better show Kyūri Sensei and Saku my new yokai form. Bye, Akane! And thanks for everything!" With that, Misaki the kitsune sprinted out of the dorm in search of hir teacher.