Suddenly his roommate Dan comes home earlier than expected. Sean jumps and Dan quickly notice that he is bigger. Unable to hide his grow, he shows Dan the Chronivac and begin to explain how it works.
Five minutes later their third roommate Jay comes back from work and quickly walks to his room saying. "Hi guys, I have a late job so I wish to not be disturbed." Jay is in his world. He hasn't even noticed Sean's transformation. Dan and Sean look at each other smiling. They had the same idea, test it with Jay.
Sean points the device at Jay's door. The Chronivac shows Jay's stats. Male, 20 years old, 5,74 feet tall, blond-red, penis length 8.27in. Yes, in the showers they call him "Big boy" because he got a long and thick one, which contrasts with his lean body.
They click on the "Ethnic" box, modifying it from "Caucasian" to "Afro-African". They make other adjustments: skin tone, facial features, hairiness. They increase its musculature. No need to change his cock size, his "over 8 inches" is enough.
In order to prank him, they're looking for a fun physical change. They choose to add him a toe at each foot. Then comes the mental changes screen. They add "Premature ejaculation" under the "Sexual disorders" section. They laugh.
Here we go. The changes list is complete. They validate the transformations by clicking on "Save".
They rush into Jay's room. Jay is working sat down at his desk. Suddenly his clothes disappear. Jay feels his pecs swell, as well as his arms and legs. Conversely, its fat is melting. Then he sees his skin darkening. He gets up in a panic, dropping his chair. He doesn't see it but his head changes too. The shape of his skull, the thickness of his nose and mouth. He touches his lips because he feels them swollen like when he was stung by a bee.
His two roommates are amused and impressed by the changes. Jay throws himself at them shouting "What have you done to me!" They burst out laughing. Jay runs to the bathroom to discover his new body in the mirror. The former redhead boy is now a strong Afro-American man. His face is completely different. No one could recognize him. His hair has been cut and his cock is semi hard between his legs.