First air date: Feb 13, 2020
Episode duration: 00h 25m
Rating: (5.3) based on 10 votes
Status: Ended Seasons: 1
Episodes: 16
Starring: Park Se-hyun, Kang Min-ah, Nam Yoon-su, Jin Ji-hee, Park Se-jin
Genre: Drama
A 'high-teen growth romance' of 11th graders, using the theme of the disappearance of the school's top student 100 days before the entrance exams.