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The actress who voiced Natsume Hyūga in Gakuen Alice is Yumiko Kobayashi. She is a Japanese voice actress who has worked on many anime and video games. She is known for her roles as Asuna Yuuki in Sword Art Online, Yuki Nagato in The Melancholy of Haruhi Suzumiya, and Natsume Hyūga in Gakuen Alice.