1 Season
16 Episode
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.
- Country : South Korea
- Genre : Sci-Fi & Fantasy, Drama, Mystery
- Director :
- Cast : Yeri, Yang Hong-seok, Lee Sang-jun, Kim Gyeol-yu, Ju Hyeon
