Blue Birthday
The series tells the story of Oh Ha-rin, who travels to the past through mysterious photos left by her first love, Ji Seo-jun. Since they were eight years old, they had been close friends, but he died by suicide on her birthday ten years ago.
Season 1
Cast
YERI
Oh Ha-rin
Yang Hong-seok
Ji Seo-jun
Lee Sang-jun
Cha Eun-seong
Kim Gyeol-yu
Do Su-jin
Ju Hyeon
Kim Ui-yeong
