The Kisaragi students learn that Heavenly Host is the site of a murder incident where school teacher Yoshikazu Yanagihori allegedly cut out the tongues of four children. Ayumi Shinozaki and Yoshiki Kishinuma are attacked by the ghost of one of the victims, but are rescued by the ghost of Naho Saenoki, a famed blogger who posted the Sachiko Ever After ritual online. They later find a bag of the children's severed tongues, which can be used to appease their spirits. Meanwhile, two of the other child victims kill Mayu by smashing her body against a wall, while her teacher Yui Shishido is struck in the head by the undead Yoshikazu. After the girl in red separates siblings Satoshi and Yuka Mochida, Yuka is pursued by Sakutaro Morishige, whose discovery of Mayu's remains has driven him insane. Yuka is rescued by Yuuya Kizami, a student from Byakudan Senior High School, who proves himself to be insane as well when he stabs Sakutaro to death and declares Yuka to be his own little sister.
One rainy night after a school festival, a group of students from Kisaragi Academy decide to perform the "Sachiko Ever After" charm, which will unite them forever as friends. Once the ritual is done, a sudden earthquake transports them to Heavenly Host, a torn down elementary school. Unbeknownst to Satoshi and his friends, however, is the horrific past behind it which culminated in its demolition. As they look for each other and try to escape from Heavenly Host, they soon find out their lives are at the mercy of those affected by that same bloodied past.
