Kouichi Sakakibara has just arrived in Yomiyama, 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.

An unexpected accident outside Yomiyama once again puts Class 3 on edge. After Matsunaga's vague whispers point to the classroom, Kouichi decides to investigate the old Class 3 homeroom in the former school building.

Matsunaga's tape has at last revealed the secrets and measures necessary to stop the curse. Kouichi and his friends try to figure out how to avert more disasters when the tape suddenly disappears.

Mei Misaki secretly meets with her twin, Misaki Fujioka, and they spend the day together. Little do they know, that both of their lives are about to change.