Castaway Diva

Castaway Diva is a 2023 South Korean television series directed by Oh Choong-hwan, written by Park Hye-ryun and Eun Yeol, and starring Park Eun-bin, Kim Hyo-jin, Chae Jong-hyeop, Cha Hak-yeon and Kim Joo-hun. It premiered on tvN from October 28 to December 3, 2023, and aired every Saturday and Sunday at 21:20 (KST) for 12 episodes. It is also available for streaming on Netflix in selected regions.

Synopsis
Seo Mok-ha (Park Eun-bin) is a girl who dreams of becoming a diva, or K-pop idol. She wins a UCC competition and goes to Seoul for an audition, but gets stranded on an uninhabited island due to an unfortunate accident and returns to the world after 15 years.

Apart from the tenacity (and luck) needed to have survived alone on a desert island for 15 years, there is also a subplot or theme running through about domestic violence, escaping it and managing to live a happy life with non-toxic people.

Main

 * Park Eun-bin as Seo Mok-ha
 * Lee A-Rin as child Seo Mok-ha
 * Lee Re as young Seo Mok-ha
 * A girl who dreams of auditioning to become a diva.


 * Kim Hyo-jin as Yoon Ran-joo
 * Han Da-in as child Yoon Ran-joo
 * Son Ye-rin as young Yoon Ran-joo
 * A gorgeous top star and diva that Mok-ha loves.


 * Chae Jong-hyeop as Kang Bo-geol / Jung Ki-ho
 * Moon Woo-jin as young Kang Bo-geol / young Jung Ki-ho
 * Mok-ha's middle school classmate who's now a producer at YGN's entertainment department.


 * Cha Hak-yeon as Kang Woo-hak / Jung Chae-ho
 * Kang Tae-ung as young Kang Woo-hak / Jung Chae-ho
 * Bo-geol's older brother and a YGN news reporter.

Bo-geol and Woo-hak's family

 * Seo Jeong-yeon as Song Ha-jeong / Yang Jae-kyung
 * Woo-hak and Bo-geol's mother who runs a hair salon.


 * Lee Joong-ok as Kang Sang-du / Lee Uk
 * Woo-hak and Bo-geol's adoptive father.

RJ Entertainment

 * Kim Joo-hun as Lee Seo-joon
 * Ran-joo's former manager, who is currently a CEO of RJ Entertainment.


 * Bae Gang-hee as Eun Mo-rae
 * The most popular singer under RJ Entertainment.


 * Shin Joo-hyup as Park Yong-gwan
 * Seo-joon's right-hand man and Mo-rae's manager at RJ Entertainment.

Nth Primetime team

 * Kim Bo-jung as Hong Yeon-kyung
 * 'Nth Primetime' main producer.


 * Yoon Jeong-hoon as Ahn Dong-min
 * 'Nth Primetime' assistant director.

People in Chunsam Island

 * Lee Seung-joon as Jung Bong-wan
 * Ki-ho and Chae-ho's father who is a police officer at the police station.


 * Kim Min-seok as Han Dae-woong
 * An insurance agent and Mok-ha's classmate before she fell to the uninhabited island in an accident.


 * Oh Kyung-hwa as Moon Young-ju
 * Mok-ha's best friend and Dae-woong's wife.


 * Lee Yoo-joon as Seo Jeong-ho
 * Mok-ha's father who runs a raw fish restaurant.

People around Yoon Ran-joo

 * Song Kyung-cheol as Hwang Byung-gak
 * Kim Min-soo as young Hwang Byung-gak
 * CEO of Sugar Entertainment, Yoon Ran-joo's former entertainment company


 * Moon Sook as Go San-hee
 * Yang Seo-yoon as 20-years-old Go San-hee
 * Woo Hyun-zoo as 50-years-old Go San-hee
 * Yoon Ran-joo's mother who identifies herself as her daughter because of her condition.


 * Kang Myung-joo as bar owner

Extended

 * Oh Ji-hye as Dr. Kim
 * Oh Eui-sik as reporter Bong Du-hyeon
 * Park Mi-sook as Cha Mi-hye
 * A popular stylist who worked with Yoon Ran-joo and Eun Mo-rae


 * Min Sung-Wook as Prosecutor Lee Ji-Gwang

Development
The series marked the third collaboration between director Oh Choong-hwan and screenwriter Park Hye-ryun after While You Were Sleeping (2017) and Start-Up (2020). Star News reported that the drama is being discussed to release on tvN's Saturday and Sunday timeslot in the second half of 2023.

Filming
On March 9, 2023, it was reported that the series had finished its first script reading on March 8 in Seoul, and would begin filming soon. On October 30, 2023, the series finished all filming and on the afternoon of November 2, the after-party was held at a restaurant in Yeouido, Seoul.

Soundtrack album
The show's soundtrack album was released on December 5, 2023. It peaked at number thirty on the weekly Circle Album Chart as of January 6, 2024.