Unpredictable Family

Unpredictable Family is a South Korean television series starring Nam Sang-ji, Lee Do-gyeom, Kang Da-bin and Lee Hyo-na. It premiered on KBS1 on September 18, 2023, and aired on every weekday at 20:30 (KST) for 131 episodes.

Synopsis
A love story between an aspiring actor and a promising director, whose parents are a married couple who have been married for 30 years. Can they overcome such a complicated family relationship and become a real family?

Main

 * Nam Sang-ji as Yoo Eun-seong (age 28) – Dong-gu and Chun-young's daughter, Eun-hyuk and Eun-ah's stepsister, an unknown actress who dreams of a brilliant rise, but is at the bottom in reality. Eun-hyuk and Eun-ah's younger sister. Former Blue Film employee. Si-heon's former lover. Sun-woo's former lover.
 * Lee Do-gyeom as Kang Seon-woo (age 34) – Jeong-ae and Ki-seok's son. A promising Hollywood film director who must achieve what he sets out to achieve. Seon-ju's older brother. Eun-ah and Eun-hyuk's half-brother. Eun-seong's former lover.
 * Kang Da-bin as Yoo Eun-hyuk (age 35) – Eun-seong's older brother and Eun-ah's younger brother. Dong-gu's son and Chun-young's adopted son. Jeong-ae's biological son. A violent crime detective who calls himself the grim reaper of criminals. Sun-woo's half-brother. Seon-ju's half-brother. Ha-young's lover.
 * Lee Hyo-na as Shin Ha-yeong (age 30) – Dal-yong's daughter, a film company planning producer who transforms into a colorful character to get what she wants. Eun-seong's boss at work. Blue Film team leader. Min-guk's aunt. Ga-ram's great-aunt. Eun-hyuk's lover.

Eun-seong's family

 * Lee Jong-won as Yoo Dong-gu (age 60) – father of three siblings, ex-husband of Jeong-ae. Chun-young's current husband. The eternally sad irregular worker at the local restaurant 'Haha Chicken'. Jeong-suk's former brother-in-law.
 * Kim Seon-kyung as Go Chun-young (age 57, pseudonym: Yoon Ji-sook/Mari) – Dong-gu's current wife, Eun-ah & Eun-hyuk's adoptive mother, and Eun-seong's mother.
 * Joo Sae-byeok as Yoo Eun-ah (age 37, pseudonym: Yoo Sara) – Eun-hyuk's older sister, Eun-seong's older sister. A show host obsessed with youth, beauty, and diet. She is Dong-gu's daughter and Chun-young's adoptive daughter. She is Jeong-ae's biological daughter. Seon-ju's stepsister. Seon-woo's half-sister. Min-guk's friend. She likes Min-guk.

Sun-woo's family

 * Lee Dae-yeon as Kang Ki-seok (age 59) – Seon-woo and Seon-joo's father, Jeong-ae's current husband. The head of the household is quite authoritative, but doesn't get anything his way. Jeong-suk's brother-in-law.
 * Choi Soo-rin as Shim Jeong-ae (age 59, pseudonym: Shim Mi-jin/Sophie) – Seon-woo and Seon-ju's mother, Dong-gu's ex-wife. Ki-seok's current wife. She is Eun-ah and Eun-hyuk's biological mother.
 * Ahn Yeon-hong as Shim Jeong-sook (age 49) – Seon-woo and Seon-ju's aunt and Jeong-ae's younger sister. He is an eternal child who cannot come to his senses even after causing an accident because of her love. She is Ki-seok's sister-in-law. She is Dong-gu's former sister-in-law. She is Eun-ah and Eun-hyuk's aunt. Seon-woo and Seon-ju's aunt.
 * Lim Na-young as Kang Seon-ju (age 28) – Seon-woo's younger sister and Eun-seong's friend. She is the daughter of Ki-seok and Jeong-ae. She is an aspiring drama writer who lightly ignores the world's standards. Jeong-suk's nephew. Eun-ah and Eun-hyuk's half-sister. She is a part-time worker at Min-guk's cafe. She likes Min-guk.

Ha-young's family

 * Im Ha-ryong as Shin Dal-yong (age 80) – The deceased father of Ha-seong and Ha-young, an indomitable romantic who lives and dies in love. Jin-sil's father-in-law. Min-guk's paternal grandfather. The great-grandfather of Ga-ram.
 * Kim Bo-mi as Maeng Jin-sil (age 58) – Ha-yeong's sister-in-law and Dal-yong's daughter-in-law. She is a kind but fierce daughter-in-law who says everything she wants to say. She is the deceased wife of Ha-seong. She is Min-guk's mother. Ga-ram's paternal grandmother. The cafe's legal owner.
 * Choi Woo-hyuk as Shin Min-guk (age 34) – Ha-yeong's nephew, Jin-jin's son. Ga-ram's father. A happy father raising a cuckoo chick. Cafe owner.
 * Jeong Min-jun as Shin Ga-ram (age 6) – Min-guk's son, a kindergarten student who speaks English well. Jin-sil's grandson. Dal-yong's great-grandson. Ha-young's nephew and grandson. Hye-yoon's biological son.
 * Yang Ji-won as Jeong Hye-yoon – Ga-ram's biological mother.

Original soundtrack

 * Part 1: Ahn Ye-seul - To My Boyfriend (Released on September 25, 2023)
 * Part 2: Mini Mani - Even If You Forget Me (Released on October 2, 2023)
 * Part 3: Lydia - Isn't That What Living Is All About? (Released on October 9, 2023)
 * Part 4: Taehwa Yoon - As If Dreaming (Released on October 16, 2023)
 * Part 5: Jo Joon-jo - Romantic Tango (Released on October 23, 2023)
 * Part 6: Yeo-eun - There's Still Something I Want To Say To You (Released on October 30, 2023)
 * Part 7: Bagna - In The End, I Am The Same (Released on November 2, 2023)
 * Part 8: Yellow - I Love You More Than Anyone Else (Released on November 6, 2023)
 * Part 9: Coda Bridge - There Are A Lot Of Things I Want To Do With You (Released on November 13, 2023)
 * Part 10: Morning Coffee - Does There Have To Be A Reason To Love (Released on November 20, 2023)
 * Part 11: Han Kyung-il - Some Days (Released on November 27, 2023)
 * Part 12: Uhana - If I Really Loved You (Released on December 4, 2023)
 * Part 13: Damu - I Loved You So Much (Released on December 11, 2023)
 * Part 14: The Daisy - I Was Never Okay (Released on December 18, 2023)
 * Part 15: Bernard Park - Aroha (Released on December 25, 2023)
 * Part 16: Doha (XEED) - I Remember You To Forget (Released on January 1, 2024)
 * Part 17: Naeunseol - To Me Who Was Loved (Released on January 8, 2024)
 * Part 18: Joo Won-tak - Just Like That, The Day Goes By (Released on January 15, 2024)
 * Part 19: Lee Hyeon - Walk In The Opposite Direction (Released on January 22, 2024)
 * Part 20: Ha Jin-woo - An Uneventful Day (Released on February 5, 2024)