In the Naiseikai Universe, this is an Alternate Earth that differs from the Earth we know and love. But due to the significance of Yokai, Spirits, Humans and Angels, the size of Japan has increased because new landforms were made due to Earth Yokais inhabiting the continent.
Neo-Japan is significantly larger than the Japan of our Earth due to spiritual and supernatural influences. Earth Yokais, through their connection to the land, have caused tectonic shifts and the formation of new landmasses over centuries. The continent now spans a greater area with additional islands, mountain ranges, and coastal regions that did not exist in our timeline.
While many familiar prefectures and cities still exist, their locations have been adjusted to accommodate the expanded geography. Some regions have been relocated entirely, and new spiritual zones have emerged that operate outside traditional prefecture boundaries.
Earth and Water Yokai work together to build and maintain this technology for the benefit of all citizens. Their magic is woven into every component of the floating system, making it a true fusion of supernatural power and advanced engineering.
All of the technology that was built for Neo-Japan happened in the year of 1256 - 1275 AD.
Due to a lot of inhabitants of Earth and Water yokai, they have agreed to help all citizens alike by using their magic to turn the entirety of Japan’s landmass TO FLOAT steadily on the water! So that means there are no longer earthquakes (albiet minor ones (underwater volcanoes)) and tsunamis! The entierty Neo-Japan technically floats because under its giant mass, there are strong earth-like pillars that lift it above waters.
The stabilization is very smooth and it will not affect citizen life. All ocean internet cables run under this floating landmass. A very high neural network! If a tsunami hits the cliff-side walls of mass, the energy from that will be converted into clean reneweable energy, which can power the whole of Neo-Japan for centuries if not more!
They are still there! Because of the landmass that is raised significantly, the beaches are at a lower elevation due to the help of all the Earth Yokais magic. There’s a huge elevator-like slide that goes up and down along the walls of the cliffsides! This allows you to go down and enjoy the beach life. Shops are indented into the walls of the landmass which are tsunami-proof if it ever happens.
The technology doesn’t really interfere much with culture and interaction. In fact, it just enhances the atmosphere in the entirety of Neo-Japan. High developed places like Kyoto, Tokyo, Osaka…etc still have those ridiculous amounts of billboards for ads and campaigns, not just brands too. Anime trailers are also broadcasted sometimes. The biggest #1 anime hit in Neo-Japan is Mob Psycho 100 >:)
Transportation is an important thing in Neo-Japan. Maglev Trains are still here. But to get to islands like Hokkaido, Mizuki Shoto, Ryu no Shima, Kyushu Region, Shikoku Region and Tenshi Shima there are…!