Miyu is a blonde, good-natured girl. At the start of the series, her parents depart for the United States to work for NASA, arranging for her to stay with their long-time family friend, Hosho Saionji, a monk residing at an old shrine on a hill. However, the monk soon leaves for India on a year-long journey, leaving Miyu to live in the same house with his son, Kanata. Initially disliking the idea of sharing a home with a boy, Miyu often fought with Kanata early in the series. She later learns from her mother that she and Kanata were friends when they were toddlers, and she begins to like him more as the story progresses. She feels a deep affection for Luu, who compares her to his mother due to their similar appearances. She also briefly had feelings for Mizuki Yamamura, the cute younger brother of Mikan Yamamura. She often becomes tired because of her parents' antics, as they constantly desert her due to their busy schedules and use her to fulfill their wishes, a pattern that has persisted since she was a child. Despite this, Miyu remains cheerful and friendly, caring tremendously for those close to her. Years later, she marries Kanata, and they live at the temple.
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