... It felt as if John had been teleported to an alternate reality. He was in a somewhat small white featureless room when a man's voice said "Hate it when you get change without your consent like... say your gender." Then all of a sudden John felt odd as his genitals shrink into him and some breasts fill out his shirt. A bunch of other things shifted but John didn't have much time to notice as the man said "Or becoming female just to become pregnant for some man" and John's stomach started to expand as a false pregnancy started happening and her breasts started to grow a size as they started to be able to lactate and the man continued "Or pregnant with octuplets." and John sat herself down as her stomach expanded eightfold as her breasts grew larger and larger leaking milk. John felt the babies inside her kick as her body was aching with the pressure of all the fake things inside her. The man finished "Then go contact anti-change investments today!"
A second latter John snapped back into reality and was staring at his phone and despite that commercial feeling like it took a few minutes it was the same time. Feeling himself John had his dick and wasn't a bloated blimp of a soon to be mother. Considering this app existed John was going to remember that anti-change investment thing. However he was now able to look and see all the things he could do with the chronivac. he could change anyone nearby and even make it seem like nothing was changed if he wanted to. John considered what he would do then...