Hanyū is the mysterious "transfer student" in Matsuribayashi-hen. She has a pair of dark colored horns on her head, one of which is chipped slightly. In the original sound novels, they are mentioned by Keiichi, who mistook them for toys, but after noticing that Hanyū was sensitive about them, he apologizes and the club members assure her there is nothing wrong with them. However in the anime, no one seems to notice or mention them, with the exception of Takano, who calls her a "monster". She has appeared to Rika all her life, but only in Matsuribayashi-hen and Miotsukushi-hen did she gain the power to interact with others, posing as a distant relative of Rika's and given the name "Hanyū Furude." Like many of the characters, she can be frightening when angered, and with her spirit-like nature, her appearance can change with her mood until she takes a physical form. She is the one responsible for the eternally repeating June 1983, which she created in order to save Rika from being murdered. She is also responsible for the "footstep you hear after you stop walking," "feeling of being watched as you sleep," and hearing "I'm sorry" when no one is around or says it, which causes the characters to have severe paranoia. She follows around the characters, repeatedly apologizing for not being able to change their fate. She is very meek and often makes the noise "Au au, au au…" when she is nervous or uncomfortable, or sometimes while trying to make a point. She tends to end her sentences with nano desu (なのです, lit. "it is so"). She dislikes alcohol and kimchi, which Rika imbibes in large amounts as punishment when she finds Hanyū annoying (as Hanyū and Rika's senses are linked together until Hanyū takes physical form). She mentions that she is a "being above humans" after being sacrificed to atone for the sin of humans, while both Rika and Takano describe her as a kind of deity. Rika refers to her as "Oyashiro" when talking with others (evident from Shion's chat with Rika in Meakashi-hen) but does not personally think of her as Oyashiro; instead, she sees her as a close friend. In Higurashi no Naku Koro ni Rei, Hanyū tells Rika that she was sacrificed to atone for the sins of the people of the village, and Hanyū asked Ōka Furude (古手 桜花 Furude Ōka) (Hanyū's own daughter and Rika's ancestor, who appears physically almost identical to Rika) to kill her and then make the village a better place. In the DS-exclusive arc, Kotohogushi-hen, it was revealed that Hanyū's real name was Hainiryuun Ieasomuuru Jieda, and that she had a child, Ōka, with the Shinto Priest Riku Furude.
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