Jeon Hye-jin (actress, born 1976)

Lee Jung-eun

Kim Eun-mi: a physical therapist and a single mother who had her daughter, Jin-hee when she was in high school. Carefree and childish, she would often act more as a rebellious teenager than being a mother. Park E-hyun as young Kim Eun-mi

Wang Jun-hee, Jun-hyeok's older sister who has chosen to divorce after twelve years of marriage to protect her child from domestic violence.

Song Ga-kyeong (39 years old)

Seo Eun-joo, Kevin Lee's wife and Hye-ran's friend from school.

Choi Bit (season 2)

Yoon Seo-kyung

Song Hyun-ji (Mi-rae's sister)