Following Naoki's funeral, Chibiki reveals that he most likely died from a head trauma he received whilst still in Yomiyama before the boat hit him. Kōichi meets up with Yūya and Naoya to search for the item Katsumi was referring too, encountering Mei along the way. Searching the 3-3 classroom from the old building, the gang follow the clues which lead them to a tape recorded by Katsumi. In the tape, Katsumi explains what happened on the school trip to the shrine 15 years ago, where students started dying when a thunderstorm appeared. However, before the important part can be revealed, Yūya accidentally breaks the cassette whilst hiding from the teacher. As this happens, a car Ayano is riding steers off a cliff after it is hit by a falling rock, whilst Ayano's friend returns home to discover her brother had been killed after truck carrying a digger crashed into her house.