Died at Work, Got a Family (English-dubbed)

Adrian Vale, a worker at Elixir Works in the Immortal Realm, dies in a car accident, only to be reincarnated in the body of Henry, the neglected eldest son of the Lynch family. Once a bitter man mistreating his wife and in-laws, Henry is now touched by the warmth and care he receives. Inspired by this newfound love, Adrian, a thousand-year seeker of immortality, decides to lead his family on the path to power and eternal life.