Isekai Kenkokuki

Following a tragic accident, the protagonist finds themselves "reborn" in an unfamiliar world as a forsaken child, charged with the care of other abandoned youngsters. With their extensive knowledge from their previous life, they guide their wards on basic survival skills, starting with the fundamentals of land cultivation. As the group grows, rumor of another community draws in more desperate orphans. Gradually, what was once a band of children morphs into a bona fide village that attracts the attention of neighboring nations. Thus begins the legend of the Divine Emperor.