경성학교: 사라진 소녀들

The name of this movie is 경성학교: 사라진 소녀들 released in 2015-06-18 and it's main theme is A sickly girl Ju-ran transfers to a new sanitorium boarding school to regain health. But she discovers that students are disappearing and notices abnormal changes happening to her body. She suspects the school for what's happening and tries to discover what secret is hidden..