In 2500 AD, an indescribable giant egg of unknown metal mixed with flesh and blood descended on the earth. Later generations called it the "Great Arrival." It releases an energy called "source energy", and creatures around the world evolve as a result, ferocious beasts become ferocious beasts, and cities fall into ruins. A very small number of humans have awakened supernatural powers, and while hunting ferocious beasts, they accidentally discovered that the bodies of ferocious beasts may contain "source cores." Therefore, the technology and social form of the entire Blue Star have undergone new changes. However, the world has been severely devastated by ferocious beasts, and human beings can only cower in fortresses that have spent countless resources and human lives to build.
Ninety years later, the dome suddenly burst and countless "smart eggs" scattered around the world. These smart eggs are as small as fists. They identify their owners through genetic binding. They can generate everything based on the host's combat data, mood swings, and knowledge reserves - weapons, elixirs, skill cards, mechanical armor, and even summon ancient heroic spirits. But at the same time, some indescribable Cthulhus also enter the Blue Star...
