We Have No Rice! ~Magical Farming Survival RPG v.1.3 by Crotch

Elder Sister Elina & Younger Sister Pipiru are two elf girls that make a living in exactly this way! Till the soil and imbue it with magic... A peaceful daily task that required little labor. Pipiru thought these days would last forever... But she was wrong. Her elder sister Elina ends up heading off on a journey to defeat the demon lord with a passing by Hero and his companions. Now Pipiru must fend for herself and survive alone! Here begins the destiny of Magical Farmer Pipiru...