In Your Radiant Season — Season 1
01 Episode 1
Feb 20, 20261h 9m★ 10.0
Seven years after a lab explosion, Chan returns home for work and unexpectedly meets Haran again.
02 Episode 2
Feb 21, 20261h 7m★ 10.0
Chan sees that Haran is frozen in winter and suggests a three-month trial friendship.
03 Episode 3
Feb 27, 20261h 7m★ 10.0
Haran rejects Chan's three-month friendship offer, but Chan is undeterred.
04 Episode 4
Feb 28, 20261h 8m★ 10.0
As Chan and Haran grow closer, a mysterious sound begins to haunt him, revealing gaps in his memory.
05 Episode 5
Mar 6, 20261h 12m★ 8.0
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.
06 Episode 6
Mar 13, 20261h 8m★ 10.0
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.
07 Episode 7
Mar 14, 20261h 12m★ 10.0
Chan and Ha-ran reunite after his U.S. return. At a SHIM party, their bond grows while Chan starts recording his resurfacing memories.
08 Episode 8
Mar 20, 20261h 5m★ 10.0
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.
09 Episode 9
Mar 21, 20261h 8m★ 10.0
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
Mar 27, 20261h 5m★ 10.0
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
Mar 28, 20261h 7m★ 10.0
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
Apr 3, 20261h 11m★ 9.0