In Your Radiant Season — Season 1
Episodes
E01 Episode 1
★ 10.0Feb 20, 2026 · 1h 9m
Seven years after a lab explosion, Chan returns home for work and unexpectedly meets Haran again.
E02 Episode 2
★ 10.0Feb 21, 2026 · 1h 7m
Chan sees that Haran is frozen in winter and suggests a three-month trial friendship.
E03 Episode 3
★ 10.0Feb 27, 2026 · 1h 7m
Haran rejects Chan's three-month friendship offer, but Chan is undeterred.
E04 Episode 4
★ 10.0Feb 28, 2026 · 1h 8m
As Chan and Haran grow closer, a mysterious sound begins to haunt him, revealing gaps in his memory.
E05 Episode 5
★ 8.0Mar 6, 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.
E06 Episode 6
★ 10.0Mar 13, 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.
E07 Episode 7
★ 10.0Mar 14, 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.
E08 Episode 8
★ 10.0Mar 20, 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.
E09 Episode 9
★ 10.0Mar 21, 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.
E10 Episode 10
★ 10.0Mar 27, 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.
E11 Episode 11
★ 10.0Mar 28, 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.
E12 Episode 12
★ 9.0Apr 3, 2026 · 1h 11m