Series

In Your Radiant Season

“Some seasons change you forever.”

2026 · 1 season · 12 episodes · Drama, Family, Mystery

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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.

Seasons

1 season · 12 episodes

1
Episode 1

20 Feb 2026 1h 9m

Seven years after a lab explosion, Chan returns home for work and unexpectedly meets Haran again.
2
Episode 2

21 Feb 2026 1h 7m

Chan sees that Haran is frozen in winter and suggests a three-month trial friendship.
3
Episode 3

27 Feb 2026 1h 7m

Haran rejects Chan's three-month friendship offer, but Chan is undeterred.
4
Episode 4

28 Feb 2026 1h 8m

As Chan and Haran grow closer, a mysterious sound begins to haunt him, revealing gaps in his memory.
5
Episode 5

6 Mar 2026 1h 12m

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.
6
Episode 6

13 Mar 2026 1h 8m

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.
7
Episode 7

14 Mar 2026 1h 12m

Chan and Ha-ran reunite after his U.S. return. At a SHIM party, their bond grows while Chan starts recording his resurfacing memories.
8
Episode 8

20 Mar 2026 1h 5m

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.
9
Episode 9

21 Mar 2026 1h 8m

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.
10
Episode 10

27 Mar 2026 1h 5m

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.
11
Episode 11

28 Mar 2026 1h 7m

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.
12
Episode 12

3 Apr 2026 1h 11m