第 4 集: 學生悲劇身亡後，三年級詛咒謠言愈演愈烈
2012年1月31日 播出
The credibility of the "class 3 curse" rumor shoots higher with a student's sudden, accidental death, and Kouichi can't help thinking that Mei is somehow connected to the events of 26 years ago. Though Mei has noticed the change in the class, she still won't give Kouichi further details on what's going on. Class 3 seems terrified of something, putting Akazawa, the head of countermeasures, in a difficult spot... (Source: Crunchyroll)