Hokuto is Subaru's twin sister. She is constantly teasing her brother about his relationship with Seishirou, and always has some crack about a wedding, which Seishirou always joins in on. She has an eye for fashion, and makes the most elaborate costumes.
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Her name, Hokuto (北斗), is the Japanese name for the constellation Ursa Major, whose brightest seven stars form the Big Dipper (Hokuto shichisei); it complements her brother's name, Subaru being the Japanese name for the Pleiades star cluster (whose brightest stars resemble a smaller version of the Big Dipper).
