Season
Season 1 Episode
- Season 1 Episode 1
- Season 1 Episode 2
- Season 1 Episode 3
- Season 1 Episode 4
- Season 1 Episode 5
- Season 1 Episode 6
- Season 1 Episode 7
- Season 1 Episode 8
- Season 1 Episode 9
- Season 1 Episode 10
- Season 1 Episode 11
- Season 1 Episode 12
- Season 1 Episode 13
- Season 1 Episode 14
- Season 1 Episode 15
- Season 1 Episode 16
Blue Birthday
5.90 24 minutes 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.
