again bro 😭 looking for a manwah about a grand master sword old man who switches body w...

again bro looking for a manwah about a grand master sword old man who switches body with a som from a family who the son constantly try to kill himself but fails. the old man and the boy switch bodies. then the boy kills himseld inside the old mana body while the old man takes over the boys life and like workss up on the boys body and makes jt better in order to like jdk