Spring Fever (TV series)

Spring Fever (Korean: 스프링 피버) is an upcoming South Korean television series starring Ahn Bo-hyun and Lee Joo-bin. Based on the web novel of the same name by Baek Min-a, it depicts the story of a woman who leaves Seoul after a heartbreak and meets a man who changes her life. It is scheduled to premiere on tvN on January 5, 2026, and will air every Monday and Tuesday at 20:50 (KST).

Spring Fever
Hangul	스프링 피버
RR	Seupeuring pibeo
MR	Sŭp'ŭring p'ibŏ
Genre	Romantic comedy
Based on	Spring Fever by Baek Min-a
Developed by	CJ ENM Studios
Written by	Kim Ah-jung
Directed by	Park Won-gook
Starring	Ahn Bo-hyun Lee Joo-bin
Country of origin	South Korea
Original language	Korean
Production
Production company	Bon Factory
Original release
Network	tvN

Synopsis

Yoon Bom goes back to Shinsu-eup after a bad experience in Seoul. She starts teaching there and is cold and distant at first. But when she meets Seon Jae-gyu, she starts to warm up and try to open her heart again.

Cast and characters

Main

• Ahn Bo-hyun as Seon Jae-gyu^[1]

The CEO of JK Power Energy. He's a big guy who might look like a rough street type, but he's actually got a heart of gold, is super considerate, and is just a genuinely nice guy.

• Lee Joo-bin as Yoon Bom^[1]

After a painful past in Seoul, she moves to Shinsu-eup and becomes a small-town teacher, catching the villagers' attention. She's tough outside, but soft inside.

• Cha Seo-won as Choi Yi-joon^[2]

An elite lawyer.

• Cho Jun-young as Seon Han-gyeol^[2]

Jae-gyu's nephew.

• Lee Jae-in as Choi Se-jin^[2]

Han-gyeol's rival.

• Bae Jung-nam as Jeong Jin-hyeok^[3]

A PE teacher at Shinsu High.

• Jin Kyung as Seo Hye-sook^[4]

A first-year teacher at Shinsu High School, who handles homeroom duties and teaches Korean language. She's a mother of twins.

Production

Development

Spring Fever is directed by Park Won-gook, who previously helmed Marry My Husband (2024), written by Kim Ah-jung, planned by CJ ENM Studios, and produced by Bon Factory. The series is based on the web novel of the same name by Baek Min-a.^[5][6] It consists of 12 episodes.^[3]

Casting

In October 2024, Ahn Bo-hyun and Lee Joo-bin were reportedly cast, and principal photography was scheduled to begin in 2025.^[5]

In April 2025, Cha Seo-won was chosen to join.^[7] In May, Lee Jae-in is under positive review by her agency to appear.^[8] The casting of Ahn and Lee Joo-bin as the leads was officially confirmed in July.^[1] In September, Cha Seo-won, Cho Jun-young, Lee Jae-in, and Bae Jung-nam reportedly joined the cast.^[2][3]

Release

Spring Fever was originally scheduled to premiere on tvN in the second half of 2025 but then it was moved to air in the first half of 2026.^[1][2]

In November 2025, a script reading was revealed, and the series was confirmed to premiere on January 5, 2026, airing every Monday and Tuesday at 20:50 (KST).^[9]