Impermanence in the World

Is there really an underworld in the world? Is the underworld the same as the underworld? Is impermanence really the messenger of the underworld? If a person dies, will there really be another life? If there was an afterlife, what would you like to be? I believe in the saying that I have no control over my destiny. My destiny will only be in my own hands. What impermanence demands life, what messenger from the underworld, they are just chess pieces... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.