The Northern Grand Duke in a Romance Fantasy Wants to Clock Out on Time

I possessed the body of the handsome and powerful Northern Grand Duke in a romance-fantasy novel. I thought my happy second life had begun, only to discover the territory was bleeding money every month and monster attacks left me no time to rest. If I want a peaceful retirement and an early escape from work, I have no choice but to turn this cursed land profitable—starting with putting a genius princess finance minister and battle-hardened northerners to work.