1 Season
16 Episode
At Eighteen - Season 1 Episode 4 Happiness and Sadness Come and Go Instantly
Su-bin and Jun-u continue practicing their English for the upcoming evaluation. Sin Jeong-hu writes a letter, and makes a heartfelt apology.
- Country : South Korea
- Genre : Drama, Comedy
- Director : Yun Gyeong-a, Sim Na-yeon
- Cast : Ong Seong-wu, Kim Hyang-gi, Shin Seung-ho, Kang Ki-young, Sim Yi-young, Kim Sun-young
