The Lord's Journey Begins with the Threat of the Saint

After traveling through another world for more than ten years, I finally became a student of the Imperial Academy, but you said it's time for me to inherit the territory. The territory is one-third the size of the entire empire, and I thought I could squander it at will. However, you said that it was divided up by the surrounding nobles and most of the territory was eaten away, and the treasures were also burned. The Saint of the Church protects you, but you say that your opponent is the mastermind behind an entire dungeon. It took a lot of effort to completely control the territory, but then you said that the whole world began to go berserk. Tired, destroy it! [Medieval + Farming + Struggle for Hegemony + Slow Heat]