In Your Radiant Season

Synopsis

Chan lives every day like it is summer vacation. Haran is trapped in a lonely winter. When their forgotten past reunites them, Chan is determined to gift her another spring. Through laughter and tears, they face winter together and reach their spring in this heartwarming romance.

First Air Date: 2026-02-20

Last Air Date: 2026-04-03

Number of Seasons: 1

Number of Episodes: 12

Created By: Jo Sung-hee

Networks: MBC

View Technical Specifications on IMDb

Top Cast

Lee Sung-kyung as Song Ha-ran
Chae Jong-hyeop as Sunwoo Chan
Han Ji-hyeon as Song Ha-yeong
Kwon Hyuk as Yeon Tae-seok
Oh Ye-ju as Song Ha-dam
Kim Tae-Young as Cha Yu-gyeom
Lee Mi-sook as Kim Na-na
Kang Seok-woo as Park Man-jae
Jung Hae-kyun as Sunwoo Seok
Kang Ae-sim as Kim Seon

Seasons

Season 1 (2026)

No overview available for this season.

Episodes:

Ep. 1: Episode 1 (2026-02-20)

Seven years after a lab explosion, Chan returns home for work and unexpectedly meets Haran again.
Ep. 2: Episode 2 (2026-02-21)

Chan sees that Haran is frozen in winter and suggests a three-month trial friendship.
Ep. 3: Episode 3 (2026-02-27)

Haran rejects Chan's three-month friendship offer, but Chan is undeterred.
Ep. 4: Episode 4 (2026-02-28)

As Chan and Haran grow closer, a mysterious sound begins to haunt him, revealing gaps in his memory.
Ep. 5: Episode 5 (2026-03-06)

Chan and Ha-ran find a Gyeongju escape but a resurfacing memory puts Chan in a brewing storm. Unbeknownst to Ha-ran, Chan is drawn into a brewing storm.
Ep. 6: Episode 6 (2026-03-13)

Chan's sudden exit for the U.S. leaves Ha-ran reeling. As longing sets in, the three sisters clash and Na-na faces an unexpected incident.
Ep. 7: Episode 7 (2026-03-14)

Chan and Ha-ran reunite after his U.S. return. At a SHIM party, their bond grows while Chan starts recording his resurfacing memories.
Ep. 8: Episode 8 (2026-03-20)

Ha-ran helps Chan reveal his father's watch secret. After their reconciliation, Ha-ran wins an award but meets a shocking face at the ceremony.
Ep. 9: Episode 9 (2026-03-21)

Chan's unintentional lie about the fountain pen weighs on his conscience. To stay close to Ha-ran, he must decide if the truth is worth the risk.
Ep. 10: Episode 10 (2026-03-27)

Chan's envy of Su-jin and Ha-ran grows. As Ha-ran celebrates Chan’s birthday, she moves past her "winter" while Nana makes a choice in Chuncheon.
Ep. 11: Episode 11 (2026-03-28)

Ha-ran, who learns Chan's secret from seven years ago through the "1-Inch of Memory" notebook, falls into confusion upon realizing that even the fountain pen was a gift he had prepared.
Ep. 12: Episode 12 (2026-04-03)

No overview for this episode.