I'm Reincarnating Endlessly in the Ghost Realm

Black mist descends on the world. Human civilization is oppressed. Strange monsters appear, the walking dead... They are hidden in the black mist, staring at your back. Among the ruins of this civilization, a young man stood on top of the ruins. The bloody clothes rolled on his back, and all the ghosts bowed their heads. We will all see the reincarnation of everything.