An Ordinary Prince's Story of Revival of a Ruined Kingdom

I just traveled to another world and became the prince of a country, but my father, the king, is about to die? Do you want me to take over as king? As an ordinary history student, can I really do it? "No, my lord, the country has no food!" "It's not good, Your Majesty, there are landslides in some areas, and many people are in urgent need of rescue!" "Oh no, Your Majesty, the neighboring country has led a large army to attack!" "Ah! Help me! I don't want to be this king anymore! I want to go home! I want to live an ordinary life!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.