Kumi seems to have what seems to be a psychic ability herself to hear the voices of certain people even when they are far away, and carries out experiments to try to find her friends. Then two men, Satsuki and Minoru, arrive. Kumi, Satsuki, and Minoru struggle with their own lives while enjoying their secrets. The people they meet are also living their lives. The three meet again at the seaside late at night, and realize that they have become each other's dearest friends, and that their relationship is about to end.
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