Iwata Koichi and Kagawa Midori are second-year students at Tozaiyama High School. One day, while coming home from school, they discover a shooting star rising up in the sky. The next day, Midori sees a shining figure in school and everyone on the school grounds starts talking about a ghost. At that point, a mysterious transfer student called Yamazawa Norio suddenly arrives at the school and moves in to live next door to Koichi. Strange things begin to happen frequently around Koichi whenever Norio appears. The reason and objective of Norio’s arrival in this world is gradually revealed.