The device was not supposed to swap bodies between Jason and Asuka. It should have simply changed their vocabulary. Simply put, this device was a kind of data exchange between two people and was a secret development for the military in the United States.
Jason and Asuka signed a non-disclosure agreement and it was logical. But something went wrong. Asuka's knowledge mixed with Jason's and now he is stuck in her body with her knowledge, still remembering himself and not even losing his sexual orientation.
Scientists then held him for a long time, and then without further explanation sent him somewhere ... As it turned out later, they brought him here ... to Japan. As it turned out, they were not going to help him and decided to simply hide this experiment and it was much easier to do it. Nevertheless, Jason believed them to the end, although many things seemed strange to him, but they said "everything is in order" before everything became too obvious.
Japanese colleagues of the Secret Service sent Jason to a Japanese brothel ... There he saw them for the last time. Its new owner - an old man named Liu Hao - had no idea about the experiment. For Liu Hao, Jason was just a girl with big tits and a pretty face, who was undocumented and who could be used to enrich herself in a brothel as a whore. He was a specialist in domestication of girls who did not want to do this dirty work. Especially considering the fact that Jason had nowhere to go in this unfamiliar country and that he completely lost his communication skills and did not even remember the names of his friends and acquaintances. His usual life as a 30 year old bully was in the past.