Hikaru Kayou (嘉陽 光, Kayō Hikaru, November 25, 1999) is a Japanese voice actress (seiyū) from Tokyo. She is affiliated with Three Tree. Her blood type is O. Her hobbies are acoustic guitar, driving, and hot spring tour. Hikaru Kayou (嘉陽 光, Kayō Hikaru, November 25, 1999) is a Japanese voice actress (seiyū) from Tokyo. She is affiliated with Three Tree. Her blood type is O. Her hobbies are acoustic guitar, driving, and hot spring tour.