In 2008, an indiscriminate killing which shocked the whole world was carried out in the street of Akihabara. Director Yûsaku Matsumoto was inspired by the Akihabira killing to look at random acts of violence occurring in Japanese society and exploring the aftermath of one such occurrence, and the building-up to another one. By following several people—perpetrators, victims and family of both alike, he tells a human story about inhumane acts.