This is the second time Park Min-young and Kim Mi-kyung are playing mother and daughter. The first time was on Sungkyunkwan Scandal (2010).
This is the third time Park Min-young (Seong Deok-mi) and Kim Mi-kyung (Ko Young Sook) have worked together. The first two were on Sungkyunkwan Scandal (2010) as Kim Yoon-hee and Ms. Jo and on Healer (2014) as Chae Young-shin and Jo Min-Ja.
Park Jin-joo (Lee Seon Joo) and Kim Mi-kyung (Ko Young Sook) also work together in It's Okay to Not Be Okay (2020).