呪われてダンジョンに閉じ込められていた勇者、人気配信者に偶然解放されたついでに無双してしまい大バズりしてしまう (Associated Names)

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.…