"Jess, I'm just warning you before hand. Something's gonna happen to you, and I don't know what. Just try to stay calm." Jake warned Jess. Leon looked right into Jake's scaly face. "What did you do to her?" Leon asked concerned and slightly angry. Jess has never been more confused in her life. "Well... I hit the random button by accident again..." Jake rubbed the back of his head. "YOU WHAT!?" Leon stood up revealing his horse body. His horn grew in anger leaving the towel on his head to shred off.
Jess had no words to fathom what she witnessed. "L.. Leon..." Was all she could mutter. Leon snapped out of his anger and turned his head towards Jess. "Uh... Yeah... Listen, I can explain..." Leon shuddered trying to think of a story. "Leon... Your... You look amazing!" Jess blurted out. "Huh?" Jake and Leon said simultaneously. "You look... Ugh... It's getting hot down there." Jess said referring to her chest. She opened the neck of her sleeveless tank to find a patch of red fur from the top of her bra. "Wait. What's that?" She asked nervously. Than she remembers Jake saying something will happen to her, and mentioned a random button.
"Is there something you two want to tell me before- Ugh! So hot!" Jess decided she needed to remove her tank, only to reveal the fur traveled all the way down to her waist. Two bumps were forming from the front of her waist. All the sudden her jeans ripped open to reveal two paws with red and white fur extending out her waist. "Guys, what even it this?" Jake and Leon watched just as confused as Jess was. It was at that moment Jess felt pressure from her lower back. In fact, multiple waves of pressure were happening all at once. Jess fell to her knees as lumps of fur grew from her lower back. One of them quickly grew into a thick furry brush like tail with a white tip. Not too long ago after another eight erupted from her back sporting the same pattern. "So... So many limbs..." Jess said as her nine tails started swishing uncontrollably.
The paws from her front started to grow longer, extending into knee like joints. Her legs began to separate as her jeans split apart from the pressure of a second torso started devolving. As her front paws grew long enough to touch the ground, the fur finally spread to her back feet. Her back feet became digitigrade, spreading black paw pads with the fur engulfing them.
Jess raised her head to look at the two boys only to notice her nose was slightly longer than usual. Her nose tip started turning black and long hairs began growing out of the sides becoming whiskers. She felt her ears growing longer and moving to the top of her head. The red fur that covered her lower body also spread all around her ears as they formed a triangular shape, with patches of white fur growing inside.
The last thing to change was her breasts, as they started gaining more mass. Her fairly short B cup breasts slowly grew out into D cups, which while struggling, her bra somehow managed to keep under control. Jake and Leon slowly approached Jess to examine her body.
"Babe... You alright?" Leon asked bending down to her face. Her face remained the same, only with the exception of a more vulpine shape. Jake went around to touch one of her tail as they started flailing causing him to back away. "Sorry. I'm still trying to get used to... This." She said referring to her new legs. "Try standing up. I swear it gets a lot easier." Leon put Jesse's arm around his shoulder and started lifting his horse legs. Once Jess reached enough hight to stand on all four feet, she regained her balance surprisingly quickly. In fact, she was almost strutting herself examining her new body.
"I don't know how you two did this, but I kinda like it." She said swishing her tails around, finally getting a feel for them. Jake and Leon in retrospect were quite jealous, but didn't show it. "So? Let me in! How did you do this?" Jess asked. Jake wasn't really looking forward to telling anyone else about the Chronivac. But maybe he could get Jess to keep it a secret.