Tina was Lyle's sister and she felt herself starting to find her bother more attractive until she spotted the monitor of the computer and seen the Chronivac program running.
Tina sat down at the computer and started to read what was there and she figured that it was this program that was changing him so she quickly started to type away, then sat back and smiled.
So little brother you wanted to be a stud see how you like this.
Lyle was walking down the street heading to the park to do some girl watching when the changes happened.
Lyle went from 6'-6" to 5'-4" and the Testosterone level that he had set to 9 out of 10 dropped to 1.
His Masculinity changed from 10 out of 10 to Femininity 10 out of 10 and his body changed to that of a gorgeous 17 year old girl with large breasts in a micro mini skirt and top that showed a lot of cleavage.
Since Lyle had made it so even he would think he always looked normal Lilly now did not react to the changes but kept walking to the park and even put a wiggle to her butt to attract more looks.
Back at the house Tina smiled as her feelings for her new sister changed to that of jealousy and she looked over the Chronivac to see what troubles she could case her.