The Devil’s Classroom

Read The Devil's Classroom follows Kim Sang-an, a merciless loan shark. After his sister, a school teacher, takes her own life due to relentless harassment from her students, he steps into the role of their new homeroom teacher to exact payment for the "debt" of her life. He is a debt collector willing to descend into the darkest depths to reclaim what is owed, while the students are nothing less than demons. A vicious "teacher-student" dynamic is about to unfold.