A thirteen-year-old piano prodigy is murdered in his classroom. After an investigation, a pair of fraternal twins come under police scrutiny. But because they are minors, the case, once clear and straightforward, gradually reaches a dead end. Just as everyone is growing increasingly anxious, the police are introduced to me, a university student studying psychology. To help solve the case, I have no choice but to agree to approach the twins under the guise of a tutor. As I get to know them, however, I slowly discover that the truth is far more horrifying and complicated than I ever imagined...
Theme: Be a good person.
