Eric was nervous with all the giggling and grinning Lisa was giving him while typing, but decided it was no use to worry, so he just sat back on the bed and watched her get on with it. However, he was surprised when she suddenly turned around with a big smile.
"What's the mysterious change?" Eric asked curiously, looking Lisa up and down for any hint of something out of place, and upon not seeing anything, eyed himself as well.
"Haha, you can't see it yet," Lisa smirked mischievously, wagging her finger at him. "We both have to strip first." Eric gave her a sideways glance, but Lisa had already stood up and begun removing her shirt. Sighing in pretend boredom, Eric stood up and pulled his t-shirt over his head. "Keep going!" Lisa tittered when he paused, noticing that she really was removing all her clothes. Finally the two stood there nude, facing each other.
"Well?" Eric asked. In response, Lisa walked over and began kissing Eric warmly. Although taken aback at first, Eric soon began responding in kind, the Chronivac almost slipping his mind. Until they flopped onto the bed and he looked up at Lisa.
"Are those...ears?" Eric stuttered, reaching up to touch the top of Lisa's head. Surely enough, sprouting from there were two soft triangular cat-like ears. Looking closer, something else was different about Lisa. She looked...fuzzier?
"That's not all, lover," Lisa grinned, her teeth looking somewhat sharper. Suddenly, something popped up over Lisa's shoulder, waving back and forth.
"A tail?!" Eric gaped. "You're changing into a cat?" Suddenly, Eric felt a prick at the end of his spine, causing him to roll over.
"Not just, me, kitty!" Lisa purred, now having a definite coat of golden fur, matching her hair. Looking down at his hands, Eric could see brown fur sprout up as his nails sharpened into retractable claws.
"But...but..." Eric sputtered as Lisa continued to kiss him, letting her paw-like hand trail down to where his member was now growing a fur-covered sheath. "How are we going to explain this? There's to hide it! We'll just be two stray cats in my mom's house!" Eric tried to stay focused, rather unsuccessfully. As he became fully aroused, Lisa wrapped her changing legs around him and drew him into her.
"Don't worry so much, I thought of all that, silly," Lisa purred as she nuzzled against Eric's soft fur. "We won't turn all the way into cats, just partially, and we'll go back to being human after a bit. And it won't happen all the time." Lisa pulled back and gave Eric a wild grin. "There's something very specific that has to happen for us to change. We have to be turned on." Lisa winked and twined her tail around Eric's. "So don't go getting excited without me, or else I'll know!"
"You mean..." Eric opened his eyes wide after a few moments of heavy breathing.
"You got it," Lisa moaned happily. "No one else knows about this, just us!"
Eric tried to think about all the practical concerns regarding what Lisa had done, but couldn't think straight as Lisa proceeded to stimulate his arousal. As he panted, he caught a glimpse of their reflection in the mirror: two very active anthropomorphic cats.