The Endless Sea, located at the end of the Cyber Forest, connects with the windy wilderness. It is said that you can reach the "other shore" after crossing the Endless Sea. However, electromagnetic thunderstorms are shrouded in the depths of the endless sea all the year round, just like a barrier, which can tear up any creature trying to cross here in an instant. In the endless sea, there are countless ancient races, and mermaid is one of them. Few girls of the mermaid clan can get the inheritance of the ancestor's stone tablet. Girls who pass the inheritance test are called "Abyss Singer"! They are good at confusing other creatures with their songs, which is an inborn racial talent and a nightmare for endless sea travelers. When you pass through the electromagnetic thunderstorm through life and death, and your mind is determined to break through the voice of confusion, and you sigh that this is not the case, your body and soul will stop here with sharp halberd points and overwhelming armor beasts.