There Kieran lay, passed out on the bed. Kiera laughed to herself; what was about to happen was a long time coming.
All of the hair on his body (except for his head) retracted back into his skin. The skin began to look softer and more supple. Then, the transformation began. Kieran's body began to deflate, his arms, legs, and torso becoming shorter in length and his muscle losing most of its definition. Most of that muscle seemed to be moving towards two regions: his ass and his pectorals. As his shoulders became rounder and narrower, his ass began to grow and breasts started to sprout from his chest. His jaw became rounder as well, with his facial features becoming much more feminine, his eyebrows thinning out, and his hair growing right out of his scalp until it came down to the middle of his back. His body stopped shrinking; he was now almost a foot shorter at 5'2 with wider hips, a narrower waist, and slightly-larger-than-average breasts. He now looked just like himself if he were a rather short woman, save for the 8-inch penis in between his smooth, hairless legs. Luckily, that was quickly ratified, as it quickly shrunk down to a fraction of that length. His testes were sucked up into his body and became ovaries, positioned on either side of his newly formed uterus. His now empty ballsack now shrunk considerably before splitting open, revealing a perfectly normal vagina. What was left of her penis shrunk even more until it was nothing more than a clitoris. Kieran's transformation was complete, going from male to completely female in the span of about fifteen seconds.
Mira was unexpectedly turned on by this, which was a good thing based on what the instructions in the kit advised her to do next. She stripped down to the nude, revealing her round breasts and completely hairless pussy, and climbed on top of Kiera. She kissed her directly on the lips, and he woke up in an instant. Kiera's mind was clouded, and she couldn't really think straight. What she did know was that her naked girlfriend was on top of her, and kissing her all over.
"Yes!" Kiera heard herself say out loud in a feminine voice strained with longing.
Mira smiled again as Kiera's blush renewed as she heard her new high pitched voice for the first time. "That's so precious," Mira cried clapping her hands together. "You sound so cute and girly".
Kiera looked down at her new body, and tears began to form in her eyes as the reality of what had happened to her hit her.
"Now now, there's no need to upset" Mira said calmly in a soothing manner. "I promise I'll make you into the perfect girlfriend, just like you want to be." She then turned her attention to her nipples. Kissing each of them back and forth brought moans of pleasure from Kiera.
"Mira, please stop," Keira moaned, sounding extremely feminine.
"I'm not done with you...yet" Mira said with a devilish grin.
She then proceeded to move downward to Kiera's new pussy. Her new girlfriend moaned louder as she ate her out. Kiera could barely move, having never before experienced these feelings of pleasure. Mira liked seeing her so helpless. She let out a mischievous giggle and slid two fingers in Kiera's moist front hole, thrusting against that special spot with the tip of her fingers. She knew exactly how to reach the place and Kiera's moaning turned into lewd cries of pleasure as Mira was probing her G-spot. Before Kiera could finish, Mira stopped, and looked at her quivering body. She held up the cup of blue liquid so Kiera could see it.
"When I want to turn you back, all I have to do is make you drink this. But I think I like you just this way for now, Kiera, you'll make a good pet to redeem yourself of your bad behavior. That serves you right for being such a selfish jerk!"
Kiera sat meekly on her knees on the bedsheets, still shaking slightly, looking up to Mira with guilt. "I'm sorry for forgetting your birthday. I've learned my lesson, but don't let me stay like this... please?" Her exhausted panting was causing her breasts to rise up and down rhythmically.
Mira lifted a hand to Kiera's chest and groped her left breast sensually. "Well, I don't know, Kiera. Maybe if you're a really good girl I will not leave you in this state too long..." She passed her hand through her girlfriend's long hair tenderly. Kiera let out a soft whimper.