"parallel universe"

Saiga Factions are organizations consisting of POI called Rokumi Saiga Rokumi Saiga refers to himself as a scientist majoring in space-time physics and is an unidentified person who seems to have conducted his activities in multiple parallel universes. The purpose of the activity is believed to be to save the target universes and human beings belonging to them. Mr. Saiga seems to hide many abnormal items brought from various parallel universes, but searching for them has yielded scarce results. Mr. Saiga has probably gained knowledge about the Foundations and other groups related to abnormal objects in the process of going back and forth in the parallel universes and pays close attention to hiding himself from each organization. Mr. Saiga has a certain number of human followers in several parallel universes. The followers are referred to as "Saiga Factions" and basically friendly to humanity. However, their "human beings" refer to human beings of all universes including the paralle