"Long ago, about ten years before the end of the ancient era… A black star came approaching this world from outer space. It floated a thousand kilometers from the atmosphere of this world. More than hundreds of thousands of pitch-black creatures entered this world without any declaration.
They scattered throughout the world to inflict terror on all the inhabitants of this world. It was like a surprise attack, and we, including all the creatures of this world, had no other choice but to strike back without knowing anything.
At that time, none of us knew their identities and why they launched the invasion. After a year of all-out fighting, we finally got God-level enemies to jump into the battlefield.
At that moment, we finally realized a surprising fact about them. Those curse-bearing monsters had the main goal of claiming this world as their new base and making all the inhabitants of this world their minions.
