A. The year 1192 is the official date of the start of the Kamakura shogunate. To summarize, it seems that Minamoto no Yoritomo seized most of the power from the Imperial government. I guess the succession of Emperors continued, though, and eventually (in 1333) there was a rebellion by loyal warlords and power went more or less back to the Imperial line.
eh?Three years after that, the same scientists were able to establish parallel-world crossover technology.Thanks to that, the parallel worlds' indigenous inhabitants' information can be trace reconstructed and one can personally be given the same body as an indigen. And adaptation to the environment, of course, also keeps the influence on the natives to the minimum.Mankind has finally been able to make the trip to another dimension a reality.At around the same time, thanks to other scientists, a data-based categorization of worlds was established. That is, they published research findings.TS calendar, 1192. A certain group of scientists confirms the existence of other worlds.However, the method for interacting with the environment of other worlds and the influence on the indigenous inhabitants and so on were considered dangerous, and so as a practical matter crossover to the parallel worlds went unrealized.Wait a minute.