The vast human world is coveted by countless beings, constantly invading. Humanity fights back, defeating demons and leaving behind countless legacies. However, one day, when a Heavenly Demon picks up a demon-slaying blade, the world suddenly becomes absurd... What's your name? Jiang Fan. Race? Heavenly Demon. Occupation? Demon Slayer, my life's work is to slay demons and eliminate evil. ???