Supernatural: Immortal at the Beginning and Infinite Death at the Beginning

(Invincible + brainless + trouble maker + fun person + whole job + multiple female protagonists.) Traveling through a world where fierce ghosts are rampant, a person who awakens the heaven-defying talent of immortality. Every time he dies, his body evolves, and from then on he starts to torture the ghost monks by pretending to slap him in the face.