I Regressed As The Duke Manhwa

After a castle burns around him, an elderly butler is reborn as the younger version of his former master, the incompetent Duke Aaron of Brahn. Though he has inherited a position of power, he retains the practical knowledge he gained from managing the estate. The new Duke Aaron sets out to govern Brahn properly and protect its people from destruction at the hands of his uncle, Emperor Zeron. To survive, he must balance effective leadership with the ruthlessness his dangerous circumstances demand.