Reincarnated from a 21st-century deaf teenager to a young boy in early 1900s Japan, a protagonist awakens into an impossible nightmare. The Demon Slayer world awaits him—a realm where man-eating demons rule the night and devastating conflicts loom on the horizon. Fortunately, destiny compensates with rare gifts: unmatched aptitude, uniquely powerful eyes, and knowledge of the future. These advantages spark a compelling question: how will Demon Slayer's narrative transform with an additional pillar joining the ranks? Can this extraordinary individual prevent the catastrophic losses of the original timeline and forge a happier conclusion?