Blue Birthday (2021)
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.
Cha Eun-seong
Oh Ha-rin
Ji Seo-jun
Do Su-jin
Kim Ui-yeong
Kim Sin-u
