I Regressed As The Duke

Consumed by the flames of a burning castle, an aged butler is reincarnated as the younger version of his incompetent master, Duke Aaron of Brahn.
Suddenly finding himself in a position of real power, equipped with his past expertise in estate management, the “new” duke sets out to rule Brahn the “right” way. Will the young Duke Aaron be able to save Brahn and its people from destruction at the hands of his uncle, the evil Emperor Zeron?
How will he balance being an effective leader with the ruthlessness required to survive? Only time will tell!