In Your Radiant Season

In Boston, Sunwoo Chan found solace in messaging with Song Ha-ran, his roommate Kang Hyuk-chan's girlfriend. Their laptops had been swapped, and Sunwoo Chan had been talking to her anonymously. He formed a secret bond with her, even sending her a pen as a gift, all without revealing his true identity. An explosion in Boston claimed Kang Hyuk-chan's life and left Sunwoo Chan with serious injuries and partial memory loss. He later reunited with Song Ha-ran in Korea, collaborating with her fashion brand Nana Atelier. Traumatized by her parents' fatal accident and Kang Hyuk-chan's death, Song Ha-ran cut ties with strangers. Sunwoo Chan's warmth slowly opened her up, but his sudden departure sparked curiosity. Nana Atelier's CEO, Kim Na-na, Song Ha-ran's grandmother, is struggling with dementia symptoms and contemplating retirement. Meanwhile, Song Ha-ran's sister, Song Ha-young, develops feelings for Yeon Tae-seok, a longtime employee of Kim Na-na. Their romance is complicated because Tae-seok was likely responsible for her parents' car accident. Song Ha-dam, the youngest, is crushing on high school baseball star Cha Yu-gyeom. He is the only one who knows about her grandmother's dementia. ==Cast==

Main • Lee Sung-kyung as Song Ha-ran : He is a top national high school baseball pitcher and Ha-dam's boyfriend. He shares a special bond with Ha-dam's grandmother, acting as a reliable grandson figure to her. Nana Atelier • Kwon Hyuk as Yeon Tae-seok : He serves as the COO of Nana Atelier and is the loyal "right-hand man" to the company's head. It is slowly revealed that his connection with the Nana family and Nana Atelier dates back 15 years. • Jang Yong-won as Je Rae-mi : A junior designer in the Design Team 1 at Nana Atelier. • Lee Seung-yeon as Jeon Pu-reum : Nana Atelier Design Team 1 Assistant Designer. • Yoon Chae-bin as Kim Sol : Nana Atelier Design Team 1 Intern. People around Chan • Firas A. Naji as Ben - A friend or colleague from Chan's time in the United States and current work acquintance. • Kwon Do-hyung as Kang Hyuk-chan - He was Sunwoo Chan's university colleague in the U.S. and Song Ha-ran's former boyfriend who tragically died in the explosion seven years ago. ==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. 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. It will also be available for streaming on Disney+. ==Viewership==