You are a adventurerer and one day you went overseas to a Island kingdom, it was suffering from all sorts of undead attacks, placues, and magic mayhem. Though many were involved you were key in finding the source and stopping it, and you were made a lord of the land and given a large manor. After a week of living in youe new home and contemplating returning overseas to keep exploring you get a knock on the door.

Horiuchu: Hello Lord, I was sent by the Emperor with a important duty to fulfill!