Mom Friend 4 (2017)

Scene 1. (Sister-in-law) Seong-goo, an unemployed man, happens to spend time at his sister-in-law’s house and learns about her secret worries.

Scene 2. (Breakup) While spending her vacation at a close senior’s house, Mi-so lies, claiming she suddenly has urgent business, and secretly meets the senior’s boyfriend, with whom she fell in love at first sight.

Scene 3. (Take my older sister) After discovering that her boyfriend had an affair with her older sister, Seong-hee tells her sister to just take him.