(Thanks to HannahWrites, the previous chapters were really good)
Layla decided to visit the apartment of her big sister Kayla (yes, their parents weren't so creative). Kayla opened the door hearing the doorbell ring, looking at her "little" sister with a naked mature body and strange shaped parts, acting like it was completely normal. "LAY!" She happily hugged her sister.
"I missed you too Kay, many things have happened"
"Tell me the details of each one, come on, have a seat!"
Layla disabled the reality alteration on her older sister. Telling about the experiences she had, explaining about each of her body parts and who they used to be.
"Jesus Christ you look amazing!"
"And all thanks to this babe~" Layla grabbed her left boob. "She gave herself this body and turned that people into her parts, then kept me as her tit that looked like a butt hole farting milk, but I managed to turn me back and steal her body, now she's my tit!
"Yeah, that's what that bitch deserves" Kayla agreed, having the same twisted mind as her sister.
"Anyways, there's something I wanted to discuss with you"
"What? Does it have to do with Clark?"
"Yes! Because he cheated on me with you!"
"Oh he definitely wanted to cheat on you with me, but I didn't want to have contact with that bastard, we saw each other in a party and began to approach me, forcefully trying to kiss and touch me"
"Oh, is that true Clark?" Layla asked her right cock arm which was squirming, after the question he just stayed still.
"Well, now that you know that he's a total dick! And literally too!" Both sisters laughed. "I wouldn't mind having a same fate as him"
"Really?" Layla excitedly asked.
"Yeah! Turn me into a part of you baby!"
"Sure~ and I have a big idea, I love this giant cock arm but I also wonder how would it be to have a cock"
"Oh lil sis~ or should I call you big sis now? You look like twice my age" they laughed. "But I have some petitions if you want to turn me into your human cock"
"I'm hearing" Layla said in her now milfy and more mature sounding voice.
"If I'm right, as a human cock I'll have my same body but from my waist to my head that will be your penis, so, I want you to make my titties really big and move them down to function as testicles"
"Oooooh! That's sounds really kinky I like it!"
"That's why we are sisters!" She said removing all her clothes, having a similar body to Layla's original one, an almost flat ass and pierced B cup boobs.
"That's the spirit! Let's start" Layla used the app to fulfill Kayla's wish, giving her a big pair of F-cup boobs.
"Now we're talking" Kayla grabbed the new enhanced assets in her chest.
Layla then positioned herself, touching her sister's rear with her crotch, Jeff muttered trying to breath with the ass in front of him. Both of their legs began to merge into a single pair, leaving Kayla's upper body left in front of her sister, she began to shrink until had the same size of an average big bigger cock, which was attached above Jeff, surrounded by Layla's pubic hairs, it looked like Jeff having a human horn. But that was not everything, only the functions were left, as everyone else Kayla's internal anatomy changed to fit her role as a cock, some organs disappearing as they were useless for her now, as Layla promised, Kayla's pierced tits moved down to her waist looking like her pair of balls leaving her chest completely flat and almost blocking Jeff's vision. Her throat and digestive track changed to a single track connected to her boobs now that they acted like testicles and produced semen internally but could also be squirted from her nipples, so her mouth was officially an urethra, begining to drool some of Layla's precum. One weird detail was that Kayla's womb didn't disappear despite her pussy sealed, but it was connected to also her mouth to a different track other than the one that produced cum.
The app could make Kayla's arms disappear to embrace a better cock form, but Layla changed that so her sister could pleasure herself just by rubbing her own body with her arms. Her human cock transformation was finished, Layla looked down smiling at the miniature version of her older sister's upper body attached to her crotch.
"This feels reaaaaally weird but I love it!" Kayla passed her hands through her really flat chest, enjoying her cum producing tits. "Also since somehow I kept my womb... Would that mean there's a possibility to get me pregnant? Can you imagine a cock giving birth? Hahahaha"
Layla laughed too. "Yeah, if someone manages to fit their dick inside your small mouth I guess, I'm not complaining"
"And me neither!"
"What should we do now?"
"What about a little playtime~" Kayla rubbed herself with tiny arms, feeling like she was masturbating her sister by herself. She could hear and feel her little sister moan.
"Oh yeah~ keep going" Layla used her left hand to grab Kayla's testicle tits playing with her pierced nipples drooling cum, while she retracted her hand from her cock arm and sucked it using Tom as her tongue, it was such a mess of sensations that she was addicted too, every time she loved even more being a freak.
Kayla kept masturbating herself until she shot a ray of cum that reached a wall, Clark came too making Layla shoot cum from her arm like it was some of weapon, covering Kayla's body and her arm with her white slimy fluid.
"Oh my~ each time this feels even better and better, I can't wait to discover more way to please myself, well, ourselves~" Layla stood of from the chair. "Well Jeff I hope you get along with your new neighbour" she giggled.
"I think everything will go right" said Kayla, while Jeff was wondering in what mess he got himself into, but his mind was slightly changing with time to fit Layla's weird desires, he began to like his new life.