Simon reset himself to 13 and watched the changes reverse themselves. This was great! He could sneak out as an adult, do anything, and return to being a kid! All the benefits of growing up, none of the headaches like jobs and responsibility!
According to the instructions, all he had to do was scan, tweak the controls to make the changes, and modify people any way he wanted. He thought of girls he knew, guys he wanted to get back at, all sorts of things.
And thinking of girls made him get hard.
For a moment, Simon considered whacking off, but having the Chronivac made him consider other things. Especially after he heard the door slam.
The voices told him that his parents and sister were home. The Chronivac had been intended for his dad, which could have meant all sorts of things. Simon didn't know why his dad wanted such a thing, but it would be easy to find out.
Sneaking into the hallway, he slowly got scans of his parents and sister. Then he changed his dad's readings, reducing 'assertiveness' to a low setting. He quietly used the device on his father's back then called out, "Hi everybody! Dad, I need to talk to you - it's important."
"Of course, Simon," John Sanderson said quickly, eager to please. Going to Simon's room, he sat on the bed and eagerly waited whatever his son wanted to talk to him about.
Simon liked this - usually his father was a cold, distant prick who never had time for him. "I got your Chronivac - it's mine now."
"Of course it is, son. Whatever you say."
"Why did you order it anyway?"
Because your mother is a cold frigid bitch who never wants sex. I was going to make her into a nympho slave girl, along with you and your sister."
Simon froze for a second. "You were going to turn ME into a slave girl?!"
"You weren't a very good son - you aren't a great athlete, you're average at school, there's no reason to make me proud of you. I figured any change would be good."
Simon looked at his father's readings - sure enough, 'ego' was way high, and 'empathy' way low. He saw himself as the center of the world, and cared nothing about other people's feelings. It was only the Chronivac making him weak-willed that kept him under control.
"You hate me for controlling you, Dad?"
"Yes."
"No you don't," and he made his father selfless and more submissive. "And since you planned to make me a slave-girl, it's only fair -" and he changed his father's gender.
John - now Jane - was a plain girl. Simon saw his resemblance to his sister. "Take off your clothes," he ordered, his woody getting painful.
"Yes, dear," Jane said, "Anything for you." And she stripped off her male clothes and underclothes, revealing the first adult woman's body Simon had ever seen outside the internet. Simon cranked her libido up to maximum and asked, "Are you horny?"
"Yes, sweetheart," she said, one hand rubbing between her legs. "My pussy is so wet."
"You remeber who you used to be?"
"YEs. I was your father and a man. And I don't care! I want cock! Please, darling?"
"Well ... OK." He smiled and took off his clothes and made her lay down on the bed. He got on top of her and guided his penis in - and exploded in orgasm at once. But he was so horny that he stayed hard and commenced fucking his former father's wet pussy as hard as he could. She rubbed her clit as he fucked, and in a few minutes she came and the squeezing of her climaxing pussy made him cum inside her a second time.
Simon enjoyed that, and while he relaxed and Jane played with herself some more, Simon looked at the Chronivac controls. He found under 'exotic controls' a setting labeled 'narcolepsy' - he remembered that was a nervous system condition that made people fall asleep uncontrollably. He set it and Jane went right to sleep.
Playing with Jane, he reset the sleeping man-turned-girl into an 18-year-old black girl. He also enlarged her tits a bit and made her complacent. He kept memories of what she was before intact, because he hated his father and wanted to know the bastard was still in there somewhere.
Examining the setting for his mother, he found that her libido was real low. Now that he had dipped his wick in his gender-changed father, he was curious about his mother. He also noted that his sister had a ral high libido, and a control marked 'virgin/preadolescent' was marked off. He figured that if he removed that, his ten-year-old sister might become a sex machine (Simon was only 13 - everything was a sexual target).