"Let me turn us first back to 'normal' if you know what I mean" Lucy giggled writing their transformations.
Going back to what they were before of their centaur madness, Ema returned to her normal human body with the exception of having Jeff as a 15 inches cock stuck to her crotch instead of her vagina, while Lucy went back to her normal self, but instead of a humantaur she turned into her normal self, still having Alex as her living pussy. Both of them had their normal pair of tits instead of 4 like they did before.
"That taur body was really pleasurable, but I feel comfier like this, isn't that right Alex?" Lucy smiled, rubbing her clit a little stimulating herself and her cousin. "So, what do you think of them? Like you said, maybe we should give them a little more of fun besides being just a single genital"
"Or... I actually changed my mind and think they're are good like that for now" Ema suspiciously smiled.
"You think so? Alright, a little extra time like this won't hurt them" Lucy laughed, "it really feels sooooo good having twice the pleasure with a pussy like this, maybe I should giving myself a penis later or something when we're done with everything, turning myself into a futa!"
Ema laughed with her, "me too, but I want to transform now, and you're going to help me with that."
"What do you mean?"
"That Alex and Jeff should have one more friend" Ema typed on the Chronicac again, until she pressed a button. "Done."
"Ema, what did you actually d-" before Lucy finished her sentence she felt herself being pulled towards Ema until she was in front of her but with Ema's belly touching Lucy's back. "What are you planning?" Before Ema responded she let Lucy see and feel the experience, her back was being assimilated by her friends belly, combining like mixing a pair of clay, Lucy's legs and arms were absorbed by Ema's, the limbs combining and becoming one until just Lucy's torso, pussy and head remained.
"So as you can see, I want all of you~ so I'll be keeping Alex for a while if you don't mind!" Ema said, using her arms to grab Lucy's breasts.
"You didn't lie when you said you were into really weird stuff" Lucy was a little scared at the beginning, but as time passed she found her new position very exciting. "I won't mind if you borrowed Alex for a while" she giggled.
Ema still toyed with Lucy slowly fusing with her. "I'm glad you also like this, you know, I had so much fun with you but I also have tons of weird fetishes and fantasies, and when Jeff showed me this machine, they all can become true! Also having someone as my body part doubles the pleasure sensation, Alex as my pussy and Jeff as a giant cock will triplicate it"
"And what will I be?" Lucy asked, feeling how her torso was almost done of being absorbed, Alex was reallocated in Ema's crotch on top of the penis that was Jeff, as for Lucy, her breasts were putting themselves below Ema's pair with her head between them, it was a weird but interesting combination as Lucy's boobs were B cup and had a bigger pair above that were the D cups of Ema.
"Oh, I'll grant you the opportunity of being my tits! As you see I'll also take yours but you'll see and feel through mines" Ema looked down as Lucy's face was being swallowed by her chest.
"I'm looking forward to it!" Ema pressed Lucy's nose pushing her faster to her chest untill nothing of her friend remained, Lucy saw how her vision went to Ema's tits like she said, like her eyes were changed to her nipples, she couldn't talk so she started to experience how Jeff and Alex feel, it wasn't bad at all.
Ema grabbed one of her tits and one of Lucy's feeling the size difference, she still didn't mind as the pleasure it gave to her was the same, but twice as better now that she had two pairs of boobs. But she didn't forget about her other new acquisition, the vagina above her big penis. "Oh Alex you really feel good down there! I almost forgot the sensation of having a vagina as a penis felt really good " she began to masturbate her new part she "stole".
Ema shoved her fingers inside Alex remembering how it was to experience a female orgasm, she eventually put all her whole fist, but as she kept masturbating she realised it wasn't enough. She kept touching herself like crazy after some minutes, as she also had a penis she was starting to despair for wanting a pussy to shove her giant penis into, but she had another of her freak and kinky ideas.
She used the computer to make her pussy to expand vertically, almost reaching her bellybutton alongside of making her insides deeper, it was the only way to fit her penis in.
After completing her transforming experiment on herself she grabbed her monstrous erected cock again with her two whole hands, so erected that she almost couldn't bend it, she was glad her cock was below and not above her pussy as it would have hurt to bend her penis downwards. Moving the penis she managed to put it inside her, her belly and the rest of her insides expanding like she just had a long tube inside her stomach, it was slightly difficult to put it in and out but with time it was just getting easier, as Jeff the penis was covered in Alex's pussy juices, as Ema fucked herself she tried to play and pinch her four nipples, pleasuring Lucy. At this point it was like an orgy in Ema's body, but she was the one who most enjoyed it, collecting the feels and excitement of her erogenous zones.
Ema was lost in the feeling of fucking herself, until she came, pulling her cock out of her long and deep vagina as it shoot dozens of cum streams while her pussy squirted. Both her penis and vagina were drooling semen, and Ema couldn't feel better about it, almost fainting when she came.
She slowly tried to stood up as her legs were shaking. "Oh my god" she stared at the mess she did on the floor, a mix of both squirt and cum covering the piece which she forgot was actually Jeff's room. "Right! Don't worry babe, I'll take care of this" she used the Chronivac to clean the room in an instant, but she also used the reality alteration thing to make everyone to think he went to some vacations with his friends and did the same for Alex and Lucy. Ema didn't apply the reality change to herself because she wanted to see the reaction of some people when she showed them her new weird body, that could turn her on too.
"Well" Ema saw everyone's clothes on the floor, the only real person in the house was her as Jeff's parents went to a fancy hotel for the rest of the week. "I know I want to show some people my new body but I won't go outside like this" she saw herself naked in a mirror, her four breasts, long pussy and massive trunk of a penis would easily call everyone's attention, that wasn't Ema's intention. She grabbed her and Lucy's bras and put each one on its respective pair of tits, now for the hard part, she grabbed Jeff's boxers instead of a pair of panties, introducing her legs in the underwear she moved it up until she couldn't more, the boxers barely covered her soccer ball sized testicles, and the worst part was that the massive cock was still out, she had another idea, she shoved all the penis inside her pussy again, letting out a strong moan in the process, it looked again like she had a tube-like thing inside her belly but it was way less noticeable than having her cock outside, now she could lift the underwear normally.
Ema walked wearing everyone's underwear and felt really good, every time she walked she felt the sensation of Jeff being inside Alex. "I hope you're enjoying this as much as I am!" Jeff and Alex still couldn't speak but agreed with Ema, Jeff loved the sensation of fill her insides as Alex was crazy about being filled. Ema used the Chronivac one more time to give herself an oversized black dress, she wore it with a black chocker with a heart and loved how she looked, you couldn't tell that woman had an extra pair of tits below their noticeable ones and a giant cock inside a long pussy due the dress size. Just a cute normal looking girl with a normal pair of D cups!
"See? WE look beautiful! I'll recommend you all getting used to this because I'll stay like this for a good while~ maybe turn even weirder!" She giggled and made the computer install a Chronivac app on her phone so she could transform whenever she wanted. She left Jeff house like nothing happened, walking through the streets none noticed a single weird thing with Ema, as she kept feeling the sensation of having the giant penis inside her with every step she made. She was already planning what to do now.