The Tragedy At The Concert Hall
An incident that occurred roughly 2 years prior to the main story. This occurred during a public performance by Zwei Wing, and was a result of an outbreak of Noise in large quantities.
In this case, counting the spectators and officials, there were over 100,000 people in attendance. The number of those who died or went missing was 12,874, a truly horrible disaster. However only 1/3 of those deaths was actually caused by the Noise themselves, the rest resulted from people who fell or were crushed to death during the rush to escape, or were killed in violent altercations that occurred at the entrances of the evacuation shelters.
Among the deceased was one of the members of Zwei Wing, Amou Kanade. As a result, after this incident Zwei Wing was officially disbanded. Presently, there are many people who remain with wounded hearts as a result of the tragedy.
Unbeknownst to the public, underneath the stage of this concert the Singular Disaster Anti-riot Unit was performing an experiment under orders of their superior. Utilizing the song of Zwei Wing, Division 2 aimed to produce enough phonic gain from the audience to activate the “Nehushtan Armor.”
Although the experiment ended in success with the activation of the armor, immediately after there was a large outbreak of Noise moving under Fine’s command. They invaded the concert hall and during the ensuing chaos the activated Nehushtan Armor was stolen.