Alex had an idea that he thought was very amusing. He selected Serena's sex field and replaced female with hernaphrodite, this unlocked an option box titled "penis properties" where you could choose the size, shape and even if the dick would be human or not, which if you switched to non-human enabled the option to choose which animal would be the male genital. Alex decided to start simple and only set the size to 8 inches, he also found where he indicated her libido as low and changed it to above average. He also chose that she would be aware of the changes before saving the changes. Alex looked at Serena, who only slept in her lingerie, and focused his attention on her crotch to see the front of her underwear filling with her new member.
Serena shifted, making it even easier to see the space between her legs. Her new member started to get hard, and was slowly escaping the confinement of her panties, in which only her balls were kept when she reached full erection.
Alex imagined Serena's reaction when she woke up and discovered her new member, but he wanted to go further. He thought for a moment because he knew he had to be quick, since at that time the girl could wake up at any moment. He then had an idea.
Alex copied everything about Serena in the chronivac, except her name, to his own data and saved it. He quickly turned into an exact copy of her, being a futa just like her and wearing exactly the same clothes. Having copied everything he/she also had an above normal libido and had a hard-on, but she had to stick to the plan, otherwise it would spoil the fun.
Alex then lay down on the bed with Serena and began to pretend he was asleep.