Kaidan to Odorou, Soshite Anata wa Kaidan de Odoru

The story is set in a middle school in Shishibone city. Tomohiro Miyajima, the main character of the story, and his group of friends are busy studying for an exam. One day, in search for a thrilling mystery as well as easy money, they take several donation boxes and fabricate a curse to scare everyone: "Ohone-sama's curse". After scrawling 骨 (bone)...