Summer is Japan’s spooky season when people enjoy sharing ghostly tales, superstitions and scary urban legends for chilling goosebumps. Obon, in August, is particularly spooky because it is when the spirits of the deceased return to the world of the living. But some tales are not just stories. The country has its fair share of unsolved mysteries, from cold murder cases to disappearances that seem almost supernatural. Here are seven of the creepiest real-life mysteries from Japan. 1. The Setagaya Family MurderOn the night of December 30, 2000, four members of the Miyazawa family were brutally m…