It took Luxia less than a moment to appear on the outskirts of the Storm Empire. Unlike the Sun Empire which had lost most of its smaller cities and towns due to the march of the Moon Empire, the Storm Empire was still in tip-top shape.
As such, there were almost 30,000 homesteads and villages, around 230 towns of various sizes, and 16 cities also of various sizes, not including the capital. On the main plane, this would be a tier above a Divine Empire.
Then again, the residents of Shinoka Continent were not subject to the Demon's millennial rampage, meaning that they had been able to carry their heritages and whatnot perfectly for all those years.
If it wasn't for limited land since Shinoka Continent was an island similar to real-world Japan but about 15x bigger, they would have expanded more. As it was, the total population of this empire was around 1.7 billion people.