Knights are indispensable to Tenshu Star. They repelled the monsters that emerged from the crater and established the Knights' Alliance to manage all kinds of affairs. However, the monsters in the crater have not appeared for many years. The Knights' heritage has gradually declined, and even the Knights' Alliance is in name only.

Skyward is a planet with a pleasant climate and rich resources. Tenshu has four distinct seasons, but the summer is not too hot, the winter is not too cold, and the spring and autumn are even more comfortable and pleasant. The only continent is evenly distributed in the most suitable temperate zone of this planet. The distribution of water resources such as rivers, lakes and oceans is also very abundant, and various plants and biological resources are rich and prosperous.

A large swamp consisting of numerous pools and soft mire. At some point, a hut was suddenly built in the middle of the swamp. The hut would light up every night to show that it was occupied. But the owner of the hut was never seen out.