Ahn Heeyeon as JinAe (Daughter of Geum Jandi and Gu Jun Pyo)
Myoui Mina as SooJin (Daughter of Yoon Ji Hoo and Min Seohyun)
Im Jaebum as SangMin (Son of So Yijun and Chu Gauel) 
Min Yoongi as Minki (Son of Song Woobin and a unknown woman) 
Song Mino as JaeSun (Son of Ha Jae Kyung)
Kim Namjoon as JaeHwa (Son of Ha Jae Kyung)
Bae Joohyun as Shin Xu (Daughter of Gu JunHee)
Kim Jiho as Misa (Daughter of Lee Jaeha)