At a certain house, a son brutally and methodically murders all five of his family members after failing the bar exam. He then hangs himself, leaving behind a cassette recorder at the scene on which he can be heard saying, Go Go now, in unison with a strange female voice. That voice belongs to a victim of the family massacre, the elementary school best friend of teenager Akane (Minami).
http://www.imdb.com/title/tt1422675/synopsis

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