Returning from the Earth, I Become the Last Hope of the Empire

(Farming, reviving the country, farming story, no male protagonist, time and again) (This is my first time writing a book! I hope you can give me more suggestions!) Regarding the fact that I was sent to Earth to study abroad by my teacher from scratch, what? The first step is to learn the language by yourself. Fortunately, I am a genius. For the sake of national rejuvenation, study hard, girl! Knowledge is power. The six-year period has arrived, and we welcome the return of the youngest special-level magician in the empire. What do you mean we only have so few people left?