قسط 1: Hajime Kindaichi Fudo High School میں ساتویں معمے کی تحقیقات Ruiko Sakuragi کے ساتھ کرتا ہے

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There is rumored to be seven mysterious murders in the Fudo High School, although only six have been solved. High school student Hajime Kindaichi is invited by the Mystery Research Team leader, Ruiko Sakuragi to help her solve the seventh riddle. There is a threatening note from the "After-School Magician" that if the old school building is demolished, the school principal will be murdered. That night, the Mystery Club, along with the security officer, Ryozo Tachibana see a figure in a mask and then a body hung above a candle pentagram in the locked forbidden biology room, but when they reach the room, it is empty. However, the next morning, Sakuragi is found hanged in the biology room in the same way as the unsolved seventh mystery. It is later revealed that she solved the last of the Seven Mysteries after she saw a corpse of a student from 10 years ago hidden within the walls. Hajime swears to solve the mystery. (Source: Wikipedia)