The Australian continent used to be sitting more isolated down in the South Pacific, and New Zealand used to be up to the right of the Australian continent, or so…
It has shifted from about 250 km - about 150 km (current). Also, among Japanese people who have traveled to Australia, Australians, and other foreigners, there are many who have experienced and shared this. The Australian continent, although close enough to Indonesia that many animals could swim across, has an ecosystem isolated from Indonesia, fostering its own unique nature and ecosystems represented by kangaroos and koalas. The scientific name for the boundary of ecological isolation between Indonesia and Australia is the Wallace Line or Wallacea, and it is studied among researchers. Furthermore, Australia was at first a country settled mainly by convicts found guilty in Britain and transported, and although this is unconfirmed information, there apparently are cases where criminals who were sentenced to death in Britain were alive in Australia and their lineages continued. Also, the author is a second-generation believer in a new religion called Happy Science, and because my parents were long-time members, our family home has many books of old doctrines that are now abolished or altered, and the author, being a bookworm in childhood, read basically anything that had the shape of a book, and although Ryuho Okawa and Happy Science became pro-American from a certain period, at first they also had anti-American doctrines, and I remember reading books that recorded various gloomy prophecies of America's downfall, like half of the American continent sinking into the sea, but as expected of Happy Science, as expected of Ryuho Okawa, they are on a different level than Aum Shinrikyo, which preached an Armageddon of a final Japan–US world war, except that it was a prophecy set together with the rise and development of Australia, and even within that prophecy there was something along the lines of, precisely because Australia is isolated (cut off) in the South Pacific... or so I remember was written. Incidentally, if one posits and calculates a Earth where Australia's…
This case is part of the Mandela Effect case database based on "The Window of Opportunity: A Guidepost to the Mandela Effect — The Ultra-Secret X-Files" by Aoyama Takuto.