Jeff paged through the numerous options of the Chronivac, as he sat in deep thought considering his options. He felt a bit bad for what he had done to his sister, with removing her mother and all. Not that he had technically done it, in this altered reality, but still. He thought his sister deserved to have a mother. Yet, at the same time, the joy he had seen in his former mothers eyes was something he hadn't seen in her for as long as he could remember.
It hit him as he looked at the templates. He could become the mother of the family, at least for now. He found a template that seemed to fit, and decided to tweak it to fit it in to the family. It was really quite intuitive to make it the daughter of his grandparents, mother of his sisters and, though he felt a strange mixture of hesitance and, strangely, arousal at thinking about it, wife of his father. With a further click, the Chronivac modified the template to create a suitable profile for the woman he would become. The result was surprisingly similar to his mother, though younger, more fit and with bleached blond hair. He decided that he'd like to enjoy himself in his new life, and turned both her libido and her general outlook on life up a few notches. Making sure that reality would be changed, yet he'd retain his memories and have access to any relevant information he'd need in the new reality, he turned the device on himself and pressed the button.
The sensation he felt was even odder than earlier. First, there was the same lens-flipping feeling from before, and then, his body started tingling. The world got slightly smaller as he grew several inches, and he could feel his face restructuring, his hair growing and his body stretching against the fabric of his clothes in places he never would have thought he would feel it, at least not in that way. The clothes also reformed, and he found himself in a tank top and a very tight pair of jeans that hurt his crotch, before, finally, he felt his manhood soften and recess into his body. Looking down at the ample breasts, feeling the emptiness of the crotch, Jeff realized that "he" was no longer the right pronoun for her, and neither was Jeff a fitting name. She was, she realized, Jessica now.
But what was Jessicas life like? What was she supposed to do? She wanted to explore her new body, get more familiar with it, and at the same time a voice in the back of her head told her she had things she needed to get done. There was laundry to do, and her husband was due home in an hour, expecting dinner.