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Hazuki Katou (加藤 葉月)Height: 155 cm
Birthday: February 13
Blood type: A
Instrument played: Tuba
Kumiko's classmate. She was in the tennis club in junior high school, and is a beginner in music. She admires the trumpet and joined the brass band club, but ended up playing the tuba. She's a bright and perky mood-maker.