All Heavens: the Dimensionality Reduction Strike Starting from Demon Slayer

After the revenge was over, Xu Qianxi came to Demon Slayer with the Blade from Another World. The world rejected him, the mist cut off the ghost's neck, and the alien blade simply went dormant. In order to survive and become stronger, he chose to make a deal with the ruler of this world. "I'll help you kill ghosts, and you give me resources." There is no passionate bond, no earth-shaking redemption. There is only the purest exchange of interests, the calmest dimension reduction attack, and tactical crushing without any moral ethics. When Twelve Demons Moon thought he was the newly promoted Hashira, he discovered that this man didn't care about the life or death of the Demon Slayer Squad at all. He just wants to complete the mission of the Blade of Alien, go to the next world, and find the person who even God cannot save.