Daughter-in-law Who Cheated On Her Father-in-law

Overview:

Hyeon-joo and Chan-sik became a sexless couple as she had suspicions that her husband was cheating on her. Then one day, she heads to her in-laws' house to take care of her father-in-law, Man-geun, who lives alone for the time being due to an accident. Without a wife, Chan-sik enjoys an affair with her employee but is caught by his father.