Matsunaga's tape has at last revealed the secrets and measures necessary to stop the Calamity. Kouichi and his friends try to figure out how to avert more disasters, when the tape suddenly disappears and falls into the wrong hands.
The casualty count continues to rise, and Kouichi's search for Matsunaga's tape is successful. During the class trip, the friends gather to listen, and to find out what Matsunaga did to stop the Calamity.
An unexpected accident outside Yomimaya once again puts class 3 on edge. After Matsunaga's vague whispers point to the classroom, Kouichi decides to investigate the old class three 3 homeroom in the former school building.
A resort hotel is the rendezvous for Kouichi, Reiko and Matsunaga, who may hold clues to stopping the calamity. As they spend a day sunning at the beach waiting for him, they run into Mei, who's staying nearby.
Fresh blood is spilled, and class 3 comes to realize that the calamity hasn't stopped. The Charm rituals are called off, and everyone is on edge, wondering who among them is actually dead. Meanwhile, Kouichi learns of an incident 15 years in the past.
A charm has been envoked by class 3 for the past 26 years to ward off any further incidents. Kouichi, now just realizing this, decides to accept what's going on around him. However, he deems it unreasonable and begins spending more time with Mei.
Following Mizuno's bizarre accident, the tension rises in class 3, and a new class officer is chosen without Kouichi knowing: Akazawa. Rumors are spreading and there's talk going on behind his back, but no one is willing to say what.
The "Class 3 Curse" rumor gains notoriety with the sudden accidental death of a student. Kouichi, desperate to know more, turns to Mei, who refuses to tell him anything else. Akazawa, the head of countermeasures, begins the investigation on Class 3.
A studio crowded with old dolls is the perfect place for Mei to tell Kouichi the tale of three students' mysterious deaths 26 years ago. Finding out more information from his classmates proves difficult, but his aunt Reiko is willing to tell him more.
Kouichi's friendship with Mei seems to be one sided: he takes every chance he can get to speak to her, but she never seems to understand what he says. Her replies seem more cryptic as the days go by, and their classmates becomes increasingly suspicious.
Kouichi Sakakibara has just arrived in Yomiyana and he's already hospitalized with a collapsed lung. After joining the local middle school almost a month late, he becomes friends with someone he met while in the hospital, a quiet girl with an eye patch.