Kim Ji Yoo

as Young Kim Se-hee (8 episodes)

as Young Ji Han-na (16 episodes)

as Oh Mal-soon [young] (12 episodes)

as Eun Sam [Rent Mom] (1 episode)

as Young Choi Min-a (1 episode)

as Lee Jun Hui [Ji Sun's daughter] (16 episodes)

as Yoon Tae-Yi [Young] (16 episodes)

as Noh Han-sol [Young] (32 episodes)

as Eun So Yoo [Young] (125 episodes)

as Young Kim Mi-so (16 episodes)

as Da-yun (16 episodes)

as Ahn Hye-joo (16 episodes)

as Seo Yoo-ri [Baby] (118 episodes)