In the age of Ilias, this city was the warground of the god Idia. It was a place of trauma, on the threshold of life and death. Such history is unknown to most. Now we go to the Meji era, to the strangely-named high school of Oedipus Heigakkou. Boys and girls, like canaries, are attuned to their surroundings, sensing a discomfort. One might call their abilities supernatural. Barometers for the health of the city. Here, a murderous soul from seven years ago prepares for revenge. Are you prepared to expose the trauma?