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Yui Horie is a Japanese voice actress who has voiced numerous roles in anime and video games. In the Monogatari series, she voices Tsubasa Hanekawa, a student at Naoetsu Private High School who is friends with the protagonist, Koyomi Araragi. Hanekawa is a kind and caring person who is often seen helping others, but she also has a dark side that she keeps hidden from most people.