S5·E4 You're Pretty, Oh Manbok

Oh Man-Bok (Kim Hyang-Gi) lives with her family which includes her father (Park Chul-Min), mother (Ra Mi-Ran), older sister (Na Hae-Ryung) and older brother (Shin Dong-Woo). Her family loves her and treats her with kindness, but Oh Man-Bok still yearns to meet her birth father. After her birth parents separated, her mother passed away from cancer and her adoptive parents have taken care of her since then.

One day, Oh Man-Bok watches a music competition TV program and realizes the song that is being performed is the same song her mother sang to her. During the show, the singer mentions that 10 years ago he met a guy in Chuncheon who wrote and performed the original song. After the original singer broke up with his love, he could no longer sing the song anymore and gave the song to him. Oh Man-Bok is convinced the original singer is her father.