Nightmare Teacher
IMDB: 6.9 1 Season
Overview: A homeroom teacher of Yosan Private High School has an accident, and thus a substitute comes to fill in. Han Bong-Gu (Uhm Ki-Joon) is a mysterious man, and after strange occurrences the class president Ye-Rim (Kim So-Hyun) tries to get to the bottom of this mystery.
