In Your Radiant Season

In Your Radiant Season is an upcoming South Korean television series written by Jo Sung-hee, directed by Jeong Sang-hee and Kim Young-jae, and starring Lee Sung-kyung and Chae Jong-hyeop. The series tells the story of Seonu Chan, who lives life to the fullest, and Song Ha-ran, who is stuck in her emotions, and how their connection brings warmth and change to both their lives when they meet. It is scheduled to premiere on MBC TV on February 20, 2026, and will air every Friday and Saturday at 21:50. It will also be available for streaming on Disney+.

WWW m.imbc.com/program/100688...

Synopsis

In Your Radiant Season follows Seonu Chan, a cheerful animator who loses his hearing and memory after a mysterious accident, and his journey with Song Ha-ran, a talented designer who becomes his savior, as they navigate their complicated pasts and relationships.

Cast

Main

Lee Sung-kyung as Song Ha-ran
Chae Jong-hyeop as Seonu Chan

Supporting

Haran's family

Lee Mi-sook as Kim Na-na
Han Ji-hyun as Song Ha-young
Oh Ye-ju as Song Ha-dam

People around the Song family

Kang Seok-woo as Park Man-jae
Kim Tae-young as Cha Yu-gyeom

Nana Atelier

Kwon Hyuk as Yeon Tae-seok
Jang Yong-won as Je Rae-mi
Ki Hyun-woo as Baek Seung-gyu
Lee Sueng-yeon as Jeon Pu-reum
Yoon Chae-bin as Kim Sol

People around Chan

Naji Firas as bin
Jung Hae-kyun as Sunwoo-seok
Kang Ae-shim as Kim Sun

Production

Development

The series is planned by Namgoong Sung-woo, co-directed by Jeong Sang-hee and Kim Young-jae, written by Jo Sung-hee, and produced by Pan Entertainment.
On November 13, 2025, Pan Entertainment announced that it had signed a production and supply agreement with MBC worth.

Casting

In 2023, Han Hyo-joo was initially cast as the female lead, but was later recast with Lee Sung-kyung considering it and Seo In-guk considering the male lead.
In May 2025, Chae Jong-hyeop reportedly received an offer to play the role of Sunwoo Chan, which was initially offered to Seo. In September, the casting of Lee and Chae as the leads was officially confirmed. The next month, Lee Mi-sook, Kang Seok-woo, Han Ji-hyun, Oh Ye-ju, and Ki Hyun-woo joined the cast.

Filming

Principal photography began in October 2025.

Release

In Your Radiant Season was reportedly scheduled to premiere on MBC TV in the first half of 2026. On January 13, 2026, a script reading was revealed, and the series officially confirmed its premiere on February 20, 2026, airing on a Friday–Saturday timeslot at 21:50. It will also be available for streaming on Disney+.