애간장 - Season 1 Episode 1
- Aliran: Comedy, Mystery, Sci-Fi & Fantasy
- Studio: OCN
- Kata kunci: time travel, high school, based on comic, romance, teacher, hidden identity
- Pemeran: Lee Jung-shin, Seo Ji-hoon, Lee Yul-eum, Lee Tae-seon, Cho Lee-hyeon, Min Do-hee