[3] The story contains many references to German culture, such as mention of Goethe's The Sorrows of Young Werther and a vinyl record playing "Mack the Knife" by Bertolt Brecht.

While living in the United States, Hasumi meets a partner in crime, an American named Clay, who thinks he shares the same "hobby" as Hasumi–killing people for fun.

The group of students that had cheated on previous exams become suspicious after their cell phones lose service during the test and suspect Tsurii, the adviser of the Radio Club.

Meanwhile, a father who had complained about the bullying of his daughter, Rina, dies when someone replaces the bottles of water around his house with kerosene; which explodes when he tries to smoke a cigarette.

Tsurii soon meets with the ringleader of the cheating group, Keisuke, explaining that he has dug into Hasumi's past and discovered that four students died of apparent suicides at his previous school.

With some of the students proceeding to the roof, another group hides inside the art room, closing it off with fire shutters and barricading the entry points.

He later runs back to the school to rescue his crush Satomi, found trying to escape by roping out of the art room window; she slips and breaks her ankles.

As he is arrested, Hasumi plans to use his recently learned knowledge of Norse mythology as his legal defense by suggesting his acts are "the will of God."

Jay Weissberg of Variety gave the movie a negative review, calling it "nothing more than a slick slasher pic" and pointing out its debatable taste: "Even were the memory of the Breivik massacre, among others, not so fresh, there's something deeply unseemly about turning a high-school bloodbath into an adrenaline-pumping pleasure ride.

"[6] Jonathan Barkan of the horror website Bloody Disgusting calls the movie "thoroughly entertaining and exciting", but criticizes that it overstays its welcome and would "benefit from a slightly tighter final cut.