Reincarnated from an Irrigation Channel ~Nation Building in a Turbulent Era~

I was helping my farmer parents and calling myself a "homemaker" rather than a NEET. One day, as a typhoon approached, I was swept away by an irrigation canal and died at age 23. When I woke up, I was 5 years old, a child of a small local lord. The year was Shouhei 2, the place was Kozuke Province in a parallel world resembling warring states Japan. "Since I've been reborn, I might as well give it my all!!" But the winters here were as harsh as Siberia. I wanted to go back... But since I couldn't go back, I had no choice but to do my best.