Master of All Worlds: Starting from Demon Slayer

Cheng Mo is drowning in despair—his sister dying, his future collapsing—when a mystical compass catapults him into the world of Demon Slayer. What starts as a desperate bid to trade modern resources for a cure spirals into something far greater. He rescues Nezuko, mentors Tanjiro, and haggles with demons and slayers alike, offering penicillin for breathing techniques and genetics reports for blood samples. But when he realizes the demon king Muzan is a walking goldmine of temporal power, the game changes. All Cheng Mo wanted was to save his sister. Now he's rewriting destinies across infinite…