After Taking a Bath in the Underworld, I Am the Craziest Immortal in the World.

Heaven and earth are a prison, and all living beings are sacrifices. A ghost who has endured thousands of years in the purgatory of time returns to the world two years later. How will he remain anonymous and outsmart the demons amidst layers of lies and murderous intentions? Finally, he will ignite the fire of all living beings and make a tragic sacrifice in exchange for a broken and free dawn for the world?