Mystery, the Crashed Sky City

The city in the sky is a pure land of bliss hidden in the world. I was a bodyguard who unfortunately died during a protection mission. Due to some kind of chance, I was able to live in an unknown world, the City in the Sky. In the City in the Sky, I encountered many incredible things, and at the same time I learned the biggest secret of the City in the Sky. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.