Discover the best and most memorable episodes of Blue Birthday, from fan favorites to critically acclaimed moments. Explore detailed ratings, episode summaries, and visualize how the show's quality evolved over time.
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.
