第 4 集: 皆川茜操縱花火，早苗於關鍵時刻現身

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The school's music teacher Akane Minagawa may have a squeaky clean image, but there is another side to her as Hanabi finds herself being manipulated by Akane. Just when Hanabi thinks she doesn't have anybody she can turn to, Sanae appears before her... (Source: Amazon)