I recommend "Taboo in the Classroom" and "The Sunken Sheep" to you. The former was about a student who broke into the school building where a murder had occurred and was trapped inside, and strange events followed. The latter was about a series of suspense cases, including the murder in the school shed and the exhibition hall of the Horror Cave in the village. These two novels are both excellent works of suspense and horror. If you like this type of novel, you must not miss them. I hope you like my recommendation, Mwah ~😗