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Kaoru, who has been cheating herself, storms out of the house in anger after her husband, Hiroki, investigates her infidelity. Unable to find a job, she goes to the detective agency that caused the problem and pressures the director, Nami, to hire her. Kaoru, a marriage detective, is born into the understaffed detective agency! With her natural flair and drive, she seduces the man she's investigating and forcefully gathers evidence of his infidelity, but...