Ryoko Yamagishi depicts the world of ancient Japan!　 A young girl takes care of her grandmother (Baba-sama) who has lost her mind on a southern island. They were mistreated as a nuisance, but one day, a man appears from across the sea... What is the country beyond the sea? What is the fate of the girl and her grandmother? A masterpiece historical tale that tackles the greatest mystery in ancient Japanese history! (Source: ebookjapan, edited)