The Hero Who Secretly Saved the World Returns.

Nearly a century ago, mysterious “holes” began to appear all over the world. From these holes, unidentified monsters emerged, wreaking havoc on people, cities, and entire nations. Humanity feared that this marked the end of their existence. But amidst the chaos, a courageous man rose to confront the monsters. He fought valiantly, slaying these beasts. He even leaped into the “holes” and discovered ways to resist the demons. However, his bravery came at a cost, as he ultimately lost his life in the battle. Despite his sacrifice, the tide began to turn, and humanity managed to push the monsters back underground. This was the first confrontation between humanity and the creatures of the unde...