Finished watching all 12 episodes of Korea's Nightmare High on Netflix. It's a series of different short stories about the students of a high school class, specifically Class 3 of Grade 11 at Yosan Private High School, led by a mysterious, substitute homeroom teacher. The episodes are indeed short; each one lasting only approximately 18 - 20 minutes, but are no less creepy than full-length features. All of the characters belong to the same class: A bullied girl who desires to reverse her social situation and uses a magic diagram to control relationships. A school fighter whose objective is to win over the strongest boys using a magical stamp on his wrist. A creative writer who is a congenital liar with a romantic fantasy and receives a journal that makes everything she writes become reality. A cheater who excels on tests because of a canned soda that improves memory. An insecure girl obsessed with youth, physical beauty, attractiveness, and appeal who discovers a phone App that makes her gorgeous. Everything of course, with twists and hitches a la O. Henry, and all of it observed by two other students in the class--the class president/school newspaper reporter and her photographer boyfriend, who both notice that their classmates are disappearing and that there are more empty seats than usual inside the classroom, and who spy on the substitute homeroom teacher.

It's 12 steps into the Korean Twilight Zone. However, I would have done away with that superfluous metronome.