There are three races on this planet, forming a tripartite pattern. This is not only the home of ghosts, vampires and werewolves, but also the home of humans. Ghosts, vampires, and werewolves. These three races are in a delicate state of balance.

Faintstar is a planet with a gloomy climate and a relatively harsh environment. Most places here are shrouded in fog all year round, damp and cold, and there is less than 100 days of sunshine in a year. The prosperous human race has established a huge country and countless cities. Although most vampires and werewolves have not established a unified national power, they hide in human society in the form of family or group organizations. Only a few traditional and conservative vampires and werewolves will stubbornly live in the so-called holy places of their respective races.

It is said that the place where the first generation of vampires was born is shrouded in thick fog all year round, and the sunlight rarely shines in. Countless bats are hovering near the castle. They are the eyes of the vampires, observing everyone who dares to approach the castle.