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.
Other Name: 블루버스데이
Released: Jul. 23, 2021
Status: Completed
Network: NAVER TV, V LIVE, YouTube
Country: Korean
Genres: Drama, Mystery, Sci-Fi & Fantasy
Cast: Ju Hyeon, Kim Gyeol-yu, Lee Sang-jun, Yang Hong-seok, Yeri