Kolos, the capital of the Principality of ISTE, is a famous city on the mainland.

this city is a bit like Venice on the earth. It is a city built on water. All buildings are built on a lake. There is no foundation at the bottom, and they are built with huge stone columns.

in the city, because of the division of buildings, there are countless River streets. In this city, it is necessary to go shopping by boat. People who come to Koros can enjoy the scenery along the bank by boat, which is very comfortable. It is also because of this unique charm that this city is famous...