Johnny and Amy were off at school and that just left the adults of the household and during these times when it was just the two of them they were cordial. If nothing else cemented this marriage as being fake it was their awkwardness together during these quiet times. They both learned to love each other's kids like their own, but they were mostly roommates. A delivery came and when Johnny got it he asked "Maeko, did you get a delivery?"
Maeko said "I was expecting one today, bring it over." She wasn't expecting any hardware though.
Least it came with a letter that read "Dear Mr. Robinson and Mrs. Saito, We are sorry for your losses 5 years ago but we are happy to give you this gift. It is a beta version of our chronivac that can change your lives in many ways. We hope you enjoy the chronivac. From, Transdiem" Aside from the letter there was the chronivac remote, a usb drive, and a usb chord for the remote to charge presumably.
"I've got an old laptop I was meaning to factory reset for Johnny anyways. Wanna see if this does anything?" John asked curious what company would did THAT deeply into their personal lives and give them this. John got the laptop, did a factory reset, made sure any connections it had were off, and then installed the chronivac app and the remote. The installation was quick and then the application scanned and found two "accounts" John and Maeko.
John clicked on his own and found a wireframe representation of his body with the prompt "change?" The remote and the program on the laptop were sync'd... even though they weren't linked in anyway.
Maeko leaned over and typed in "Sex" then "Female" as she said "I think it'll simulate what you'd look like differently." and then entered the change and John quickly realized that this thing could change reality as breasts sprouted from his chest. His clothes were ill-fitting for his now her shorter stature and curvy physique. The two woman looked at each other and looked at what else the remote could possibly do and when they saw inanimate options... as John had an idea as he grabbed the remote and went to their lovers shrine and pressed scan and... Well all that was in the shrine was bone ash. Completely incinerated and in a sense there wasn't really anything human left in a scientific sense.
John knelt at the shrine and prayed as some silent tears started to form... she had hoped for a second maybe her love could be revived and... well then what? Maeko came over and gave John a hug before giving a prayer herself. Then they looked at the remote. "So what do we do with this? I guess I should turn back to being a guy." There was a thought that maybe they could play around with it for a little while. The kids were off at school and there were a lot of options...