"How about... all of it?" Jenny asked "innocently"
"You mean you just take over my whole body?!?!" Jeff asked a bit concerned.
"No... Like I'll just kind of exist as your body and also use the chronivac to give me the ability to change you how I'd like. I can't change your mind or personality, nor can I move your body for you... but I can sense what you can sense and even communicate with you telepathically since I'll be the body your in!" Jenny responded
"Ok... but I'm going to leave this change up to being undone if this starts getting a bit uncomfortable." Jeff said as he tried getting the chronivac to do what she said. Obviously he set up the whole change thing and then since Jenny would be him... he decided for the length of the transformation Jenny just wouldn't exist. She'd still exist and be transforming his body, but Jenny the person would have effectively not existed so people weren't wondering where she went. Then finally so Jenny could go a little crazy if she wanted to in public he set it so everyone else's awareness would be off and their clothes would change to fit their new forms. Then he hit the enter button and suddenly there was no Jenny.
"Weird... I can see through your eyes, smell through your nose, etc... but I didn't think of how imprisoned it would feel to not be able to move at ALL." Jenny thought in your head.
"Do you want to stop this right now?" Jeff asked mentally
"Nah, especially if I can do this." Jeff squirmed a bit as he could feel his dick suck in as his body got softer and smaller. The main thing Jeff could see was his arms thinning and his breasts jutting out of her chest now.
"OOO, nice blouse... wait did I do that or?" Jenny thought
"No, it was the Chronivac. I set it up so no one would be aware this body of ours morphs and that our clothing would change. Also you technically don't exist." Jenny didn't say anything but Jeff could feel a wave of sadness so he clarified "It's just. Since your me... your family would get worried otherwise right? You'll exist as soon as we undo this."
"Ok... but since you made it so I can do it I'll do some weird things to our body!" Jenny thought
"Great, Ok now for the first part of our... date I guess?" The two had an idea of what they wanted to do like this so-