Bad Sister-in-law

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Ae-ran's husband is living an unemployed life. Tired of this, she goes out on the pretext of work and secretly seeks a man. One day, she sees a broken light fixture and begins to annoy her husband, who has been putting up with it. Her husband falls off a chair and injures his arm while changing a light fixture. Da-yeong, who wants to take care of her for only a few days, asks her husband, and goes out to enjoy her secret love again. Her brother-in-law and sister-in-law are left in an empty house. A strange romance between the two begins...