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In Your Radiant Season

In Your Radiant Season is a 2026 South Korean romantic mystery television series written by Jo Sung-hee and directed by Jeong Sang-hee and Kim Young-jae.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

In Your Radiant Season is a 2026 South Korean romantic mystery television series written by Jo Sung-hee and directed by Jeong Sang-hee and Kim Young-jae. Starring Lee Sung-kyung and Chae Jong-hyeop, it follows two people whose lives are changed when they meet again after personal trauma and loss.

Premise

The series centres on Sunwoo Chan and Song Ha-ran, whose lives become intertwined after an unexpected encounter. Their relationship drives the story’s themes of emotional healing, hidden wounds, and rediscovered connection.

Production

In Your Radiant Season was written by Jo Sung-hee and directed by Jeong Sang-hee and Kim Young-jae. It is a South Korean production in the Korean language.

Broadcast

The series aired on MBC TV over a 12-episode run beginning on February 20, 2026 and ending on April 3, 2026. It was scheduled on Fridays and Saturdays at 21:50 KST.

Cast and characters

Lee Sung-kyung plays Song Ha-ran and Chae Jong-hyeop plays Sunwoo Chan. Available summaries describe Ha-ran as a designer coping with loss and Chan as a bright man with a painful past.

Key facts

  • In Your Radiant Season is a 2026 South Korean romantic mystery television series.
  • It was written by Jo Sung-hee and directed by Jeong Sang-hee and Kim Young-jae.
  • The lead cast includes Lee Sung-kyung and Chae Jong-hyeop.
  • It aired for 12 episodes on MBC TV from February 20 to April 3, 2026.
  • The story centres on characters dealing with grief, trauma, memory, and reconnection.

Frequently asked questions

What is In Your Radiant Season?
It is a 2026 South Korean romantic mystery television series broadcast on MBC TV.
Who wrote In Your Radiant Season?
The series was written by Jo Sung-hee.
Who stars in In Your Radiant Season?
The lead roles are played by Lee Sung-kyung and Chae Jong-hyeop.
How many episodes does it have?
The series has 12 episodes.
When did it air?
It aired from February 20 to April 3, 2026.

References

  1. Wikipedia — https://en.wikipedia.org/wiki/In_Your_Radiant_Season
    Supports: Core production details, country of origin, language, episode count, release dates, and synopsis.
  2. Wikipedia (Spanish) — https://es.wikipedia.org/wiki/In_Your_Radiant_Season
    Supports: Series description, genre, writer, directors, and lead cast.
  3. MyDramaList — https://www.mydramalist.com/755669-in-your-brilliant-season
    Supports: Alternative synopsis, character descriptions, and production credits.
  4. Maeil Business Newspaper — https://www.mk.co.kr/en/broadcasting-service/11988621
    Supports: Lead cast and broadcast context.
  5. South China Morning Post — https://www.scmp.com/lifestyle/k-drama/k-drama/article/3344702/disney-k-drama-your-radiant-season-lee-sung-kyung-chae-jong-hyeop-romantic-drama
    Supports: Premise, cast, and character background.