"So," Becca started, "All I have to do is make a change to you, and you can change me?"
"That's right," Jen said. "Just be careful not to go too extreme."
"You mean like you did to Julie here?" Becca laughed and took the marker from Jennifer, and very carefully, drew an eyeball in the center of her forehead. Suddenly Jen's vision lit up! A third eye, adding a whole new level of depth perception came into being! "That's hot." Becca said, "Nice tats by the way."
Becca was a voluptuous girl, 19 years old because she failed the 11th grade. Tattoos down both arms, piercings where applicable, and the standard black fishnets and torn sweater covering DD tits. Black hair and black makeup completed the ensemble. And she was drop dead gorgeous for all of it.
"Okay," Becca said, "Here's what I want." She then whispered into Jen's ear while Julie sat against the closet door, tears streaming down her face. They walked behind the bed as Jennifer made a change, much to Becca's delight. Then, Julie handed the marker to Becca.
Becca walked up to Julie, like a predator before its prey, and knelt down. Then she pulled Julie in, and kissed her mouthless face, licking the empty skin where her mouth used to be, licking up her tears like a draught in the desert. She made out with Julie for a good minute while the latter sat there terrified. Sucking on her chin, licking her nose, and overall making a mess of her face, black lipstick staining the area around where her lips once were.
Then she brought up the marker, and with a couple quick swipes, drew onto her face what looked like an incision. And just like that, her body altered itself for this new reality. New lips formed on her face, lips meant for penetration. Pussy lips. And with those lips came all the reproductive organs, finding a home in her tits where they had to grow to make space. And just like that, Julie knew what change Becca had requested of Jen. She stood up, and lifted her skirt revealing a large cock and balls. Her pussy was completely gone, replaced in full with male appendage. By all accounts she was legally male, though she could identify as female or trans or whatever. No one would suspect she was born female.
And then Becca's new cock came down, inserting into the pussy-face before her. All Julie could do was accept it. Her face was being raped, and all her mind could do was agree to it. She could feel the cock reach down her throat, no gag reflex, just deep penetration. Over and over, Becca's 12 inch penis shoved into her. No teeth to obstruct, and a depth much more than any normal vagina could offer. Her juices fell free from her lips as the cock pumped in and out.
Becca, for all she was, was blown away by the experience. It was primal, brutal, surreal. She was fucking her friend's face! Each inch the head went down her throat felt like an orgasm! It was so smooth, and yet so tight. Over and over, in and out.
"I'm going to make your tits pregnant." Becca said, thrusting harder and faster. "You're mouth is gonna have my baby!" And with that she came, pumping what seemed like gallons down Julie's throat. And, just as she felt the last of her balls draining, she felt something odd. Jen had done something to her.