1 Season
16 Episode
Blue Birthday - Season 1 Episode 15 Disappear
Her first love passed away on her birthday
- Year: 2021
- Country: South Korea
- Genre: Sci-Fi & Fantasy, Drama, Mystery
- Studio: NAVER TV, YouTube, V LIVE
- Keyword: time travel, high school
- Director:
- Cast: Yeri, Yang Hong-seok, Lee Sang-jun, Kim Gyeol-yu, Ju Hyeon