As if summoned by her words you start to feel a tingling down your body. It's centering around your vagina, no, right above it. As the tingling grows stronger, you almost subconsciously begin pinching your clit with your fingers. Both Amy and Lana watch your sudden masturbation-session, the latter already joining in by pumping her penis with her hand. You continue unperturbed and notice the surface area expanding. Soon you can move the pinching fingers up and down, shortly after you can place multiple fingers on it.
Of course you are already fully aware of what's happening and the anticipation is almost killing you. You didn't really expect to see it again since your transformation into a lesbian mermaid this morning, at least not so soon. It becomes big enough for you to wrap your whole hand around and familiar feelings start to return as new nerves connect.
“Nice to see you back,” you greet your penis, which is now growing over a scales-surrounded vagina instead of skinny ballsacks. Otherwise it looks just like you remembered it. You celebrate your reunion by increasing your pumping and not much later you reach the climax and start cumming in a wide arc on your own tail.
“I have to ask, Amy, did you know this would happen?” you ask after catching your breath.
“Not really. I was more hoping it would happen,” Amy replies as she slowly and sensually slides over the floor to you. “Admittedly I’ve already been missing your penis. And it looks like ‘she’ has been missing me as well. How about a little kiss?”
Just as Amy was about to envelop your rehardened dick with her lips, you’re both stopped by the already familiar sound of someone slipping on the floor. Turning to the source you see Lana sprawled out on the floor, her legs held firmly together. “Sorry, I suddenly have some trouble moving my legs.”
You and Amy give each other knowing looks and she moves to your side so both of you can get a good view of the upcoming show. Lana’s still feeling her legs trying to find out what's wrong with her body and why she suddenly can't separate her legs anymore. After the seam between her legs started to disappear, does she realize what's going on and fully leans into her changes. Her hands leave her legs and move over to her breasts and genitals. The ensuing moans are music in your and Amy’s ears.
By now her legs have completely joined together and her feet are already flattening into a tailfin. Scales are surfacing all over her tail, forming a black and white zebra-pattern. The appearance of gills completes her transformation into another mermaid.
Lana appreciatively rubs her hands over her scaled lower body. “Ahh~ This feels so great, girls.”
As one you and Amy start approaching your fellow mermaid. “And we can make you feel even better,” Amy purred.
You have trouble remembering what happened next, most got lost in a sexual haze. You three spent quite a while having a wild futa mermaid orgy. Limbs and genitals went all over your bodies. At points you couldn't even tell where your body ended and Amy’s and Lana’s bodies began. All sexual holes got fully explored by your dicks. Each vagina must've been filled by each penis at least twice.
By the end all three of you are cuddling under the shower stream, drenched in sweat, saliva and three kinds of sexual fluids, which the water has trouble washing away. Lana, lying in the nape of Amy's neck, is the first to break the afterglow silence. “Girls, I know we didn’t know each other that well before and you two are already a thing, but I think I’m in love with you, both of you. Even if you don't feel the same, you gifted me my true form, made me a true female, and I will forever be thankful for that.”
“I wouldn't mind, Aurora and I have enough love for you as well. To be honest, I’m starting to feel the same. When you asked me for your own penis, I knew we were on the same wavelength.” Amy starts to lovingly caress Lana's head. “Are you alright with it, Aurora?”
“Everything for you, my mermaid queen.” You punctuated this by flicking one of Lana's nipples with your finger, while doing the same to Amy’s nipple with your tongue. “And if you hadn't suggested it, I would have.”
Lana smiles brightly, as tears are gathering in her eyes. “Thank you.” She cuddles even closer to you and Amy.
Suddenly the school bell startles the three of you, ripping you out of your moment. “Maybe we should go to our classes.”