Demon Slayer: Becoming Stronger from Breathing

A good news and a bad news, The good news is that Zhu Mingye has traveled to the world of demon slayers and has tricks to strengthen himself or items. The bad news is that the boss is also in trouble. In this timeline, God gave him a sound brain. With the cooperation of strong strength and normal intelligence, the opponent finally succeeded in destroying the Demon Slayer Team and completed the ultimate evolution. Demon Slayer: Kimetsu no Yaiba was completely renamed Hashira no Yaiba. How can Zhu Mingye, who was summoned to this world, reverse the timeline and return the world to normal?