Eerie Descent: Eradicating Evil

[Infinite-flow + invincible protagonist + satisfying power fantasy + overwhelming force] Once the horrors sealed away in the frozen world are released, the world will descend into apocalypse. A girl of unknown origins wields a long blade and calls the horrors “evil.” The horrors, impervious to blades and bullets, are effortlessly eliminated by her. Bitter cold, even mutated plants, are no threat to her! Will this mysterious girl bring help, or disaster?