A couple who lived together. My mother-in-law passed away and I was wondering what to do with the two-family house. At that time, my father-in-law, who didn't come to the funeral, suddenly returned. My father-in-law ended up living in a two-family house. By being able to go back and forth between both houses, there is trouble between my father-in-law and my daughter-in-law, Hikaru.