6 ตอน
เนื้อหาเรตติ้ง
N/A
สนับสนุน
เรื่องย่อ
They were once a happy class-- a family to be exact. Until one day, during the midterm exams, someone came out and starts giving them riddles and problems. Once they failed to answer it, one of their class will die. Will they find the killer? A lots of secrets will be revealed.