Keiichi learns his classmates knew of his secret meeting with Oishi and discovers disturbing information about Rena's past. As his paranoia escalates, it becomes clear that someone is trying to kill him!
Keiichi hears the odd circumstances surrounding Satoko's older brother, Satoshi. It seems he simply left the village, but when Keiichi mentions Satoshi to Shion and Rena, each reacts in an unusual manner.
In the aftermath of Satoko's traumatic breakdown, Keiichi decides extreme measures are needed to save her from the abuse of her uncle. On the night of the town festival, he lures Teppei out of his house.
At school, Rena's attitude brings smiles to everyone around her - but things are different at home. Her mother left the family for another man, and she worries her father's new girlfriend is only after his money.
Rena takes the school hostage using a homemade bomb and demands the police investigate the Sonozaki family's connection to Oyashiro-sama's curse. Can Keiichi save his classmates from being burned alive?