Can I Be Reborn Infinitely in the Demon World?

This is the world of monsters. The evil spirits are everywhere and the demons are dancing wildly. Humanity lingers here, becoming lambs to be slaughtered. Until that person appears———— He observed all the monsters in the world, went through all kinds of difficulties, and finally created the first technique that humans can practice: "The Method of Ten Thousand Demons" He led one hundred thousand monks to protect the last piece of pure land of the human race. Until his life is about to come to an end and the Pure Land is about to fall. A new story begins————