Spring Fever (TV series)

Spring Fever
Promotional poster
Hangul
스프링 피버
RRSeupeuring pibeo
MRSŭp'ŭring p'ibŏ
GenreRomantic comedy
Based onSpring Fever
by Baek Min-a
Developed byCJ ENM Studios
Written byKim Ah-jung
Directed byPark Won-gook
Starring
Music by
  • Kim Jeong-ha
  • muii[1]
Country of originSouth Korea
Original languageKorean
No. of episodes12
Production
Executive producers
  • Kim Chang-mi
  • Oh Jin-seung
  • Lee Jun-yong[1]
Producers
  • Moon Seok-hwan
  • Oh Kwang-hee
  • Park Sun-tae
  • Yoon Na-hyun[1]
Running time70 minutes[2]
Production companyBon Factory
Original release
NetworktvN
ReleaseJanuary 5 (2026-01-05) –
February 10, 2026 (2026-02-10)

Spring Fever (Korean: 스프링 피버) is a 2026 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 premiered on tvN on January 5, 2026, and aired every Monday and Tuesday at 20:50 (KST). It is also available for streaming on Amazon Prime Video globally.

Synopsis

Yoon Bom is a Seoul vibrant teacher who was accused of an affair scandal unfairly and she moved to Shinsu-eup, a rural area after her bad experience in Seoul. She starts teaching there and is cold and distant at first. But when she meets Seon Jae-gyu, a rough but kind hearted local man, she starts to warm up and opens her heart again.

Cast and characters

Main

The CEO of JQ Power Energy. People who surround him see him as 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.
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.

Supporting

An elite lawyer.
Jae-gyu's nephew.
Han-gyeol's rival.
  • Bae Jung-nam as Jeong Jin-hyeok[5]
A PE teacher at Shinsu High School.
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.[7][8] It consists of 12 episodes.[5]

Casting

In October 2024, Ahn Bo-hyun and Lee Joo-bin were reportedly cast, and principal photography was scheduled to begin in 2025.[7]

In April 2025, Cha Seo-won was chosen to join.[9] In May, Lee Jae-in is under positive review by her agency to appear.[10] The casting of Ahn and Lee Joo-bin as the leads was officially confirmed in July.[3] In September, Cha Seo-won, Cho Jun-young, Lee Jae-in, and Bae Jung-nam reportedly joined the cast.[4][5]

Release

Spring Fever was originally scheduled to premiere on tvN in the second half of 2025 but later moved in the first half of 2026.[3][4] The series was confirmed to premiere on January 5, 2026, airing every Monday and Tuesday at 20:50 (KST).[11] It is also available for streaming on Amazon Prime Video in more than 240 territories.[12]

Viewership

Spring Fever : South Korea viewers per episode (thousands)
SeasonEpisode numberAverage
123456789101112
11098108012831155122511541182119212951280136113161218
Source: Audience measurement performed nationwide by Nielsen Korea.[13]
Average TV viewership ratings
Ep. Original broadcast date Average audience share
(Nielsen Korea)[13]
Nationwide Seoul
1 January 5, 2026 4.832% (1st) 4.676% (1st)
2 January 6, 2026 4.605% (1st) 4.265% (1st)
3 January 12, 2026 5.407% (1st) 4.575% (1st)
4 January 13, 2026 5.041% (1st) 4.858% (1st)
5 January 19, 2026 5.007% (1st) 4.579% (1st)
6 January 20, 2026 4.918% (1st) 4.396% (1st)
7 January 26, 2026 5.140% (1st) 5.460% (1st)
8 January 27, 2026 5.163% (1st) 4.750% (1st)
9 February 2, 2026 5.354% (1st) 5.092% (1st)
10 February 3, 2026 5.456% (1st) 5.311% (1st)
11 February 9, 2026 5.523% (1st) 5.208% (1st)
12 February 10, 2026 5.748% (1st) 5.640% (1st)
Average 5.183% 4.901%
  • In the table above, the blue numbers represent the lowest ratings and the red numbers represent the highest ratings.
  • This drama aired on a cable channel/pay TV which normally has a relatively smaller audience compared to free-to-air TV/public broadcasters (KBS, SBS, MBC, and EBS).

References

  1. ^ a b c tvN DRAMA (January 5, 2026). 오늘도 웃지 말기, 일부러 침울한 하루를 시작하는 이주빈의 반전 #스프링피버 EP.1 [Don't Smile Today, Lee Joo-bin's Reversal of a Dreary Day #SpringFever EP.1] (Television production) (in Korean). Retrieved January 5, 2026 – via YouTube.
  2. ^ 스프링 피버 [Spring Fever]. CJENM Watch. December 27, 2025. Retrieved December 26, 2025.
  3. ^ a b c d Ahn, Tae-hyun (July 23, 2025). 안보현·이주빈, 로맨스 꽃 피운다...'스프링 피버' 출연 확정 [Ahn Bo-hyun and Lee Joo-bin Confirmed for "Spring Fever" with Blossoming Romance]. News 1 (in Korean). Archived from the original on December 31, 2025. Retrieved October 7, 2025.
  4. ^ a b c d e Kim, Gyul-wool (September 3, 2025). 차서원·조준영·이재인, tvN 새 드라마 '스프링 피버' 합류 [Cha Seo-won, Jo Jun-young, and Lee Jae-in join tvN's new drama "Spring Fever"]. Sports Donga (in Korean). Retrieved October 17, 2025.
  5. ^ a b c Lee, Seung-hoon (September 4, 2025). "만장일치 캐스팅"..배정남, '스프링 피버' 출연 확정 ["Unanimous Casting"... Bae Jung-nam Confirmed for "Spring Fever"]. Star News (in Korean). Archived from the original on December 31, 2025. Retrieved October 17, 2025.
  6. ^ Yoo, Ji-hye (November 11, 2025). 진경, '스프링 피버' 출연... 안보현·이주빈과 호흡 [Jin Kyung joins 'Spring Fever' with Ahn Bo-hyun and Lee Joo-bin]. JTBC (in Korean). Retrieved November 23, 2025.
  7. ^ a b Bae, Hyo-joo (October 16, 2024). [단독] 안보현·이주빈, '내남결' 감독 만난다...'스프링 피버' 로맨스 호흡 [[Exclusive] Ahn Bo-hyun and Lee Joo-bin meet the director of 'My Husband'... 'Spring Fever' romance chemistry]. Osen (in Korean). Retrieved October 17, 2025 – via Naver.
  8. ^ Kim, Ji-hye (September 3, 2025). '내남결' 감독 차기작..'스프링 피버' 차서원x조준영x이재인 출연 확정 [Director of 'My Husband's next project...'Spring Fever' Cha Seo-won, Jo Jun-young, and Lee Jae-in confirmed to appear]. Herald Pop (in Korean). Retrieved October 17, 2025.
  9. ^ Jang, Jin-ri (April 17, 2025). [단독]차서원, '스프링 피버' 캐스팅...결혼+전역 후 첫 안방 복귀 [[Exclusive] Cha Seo-won cast in 'Spring Fever'... First TV return since marriage and military discharge]. SPOTV (in Korean). Retrieved October 17, 2025.
  10. ^ Kim, So-yeon (May 21, 2025). [단독] '교복불패' 이재인, 청춘 로맨스 예고...'스프링피버' 합류 [[Exclusive] Lee Jae-in, the "Undefeated in School Uniform" star, teases a youthful romance, joining "Spring Fever"]. The Korea Economic Daily (in Korean). Retrieved October 17, 2025.
  11. ^ Kim, Saet-byeol (November 27, 2025). 안보현·이주빈 핫핑크빛 로맨스...'스프링 피버', 1월 5일 첫 방송 [A hot pink romance between Ahn Bo-hyun and Lee Joo-bin... 'Spring Fever' premieres on January 5th]. The Fact (in Korean). Archived from the original on January 5, 2026. Retrieved November 27, 2025.
  12. ^ "Get Ready to Swoon with Ahn Bo-hyun and Lee Joo-been's Spring Fever on Prime Video". Amazon MGM Studios (Press release). November 26, 2025. Retrieved January 13, 2026.
  13. ^ a b Nielsen Korea ratings:
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