Argumento
In the aftermath of the Golem III attack, Kanzashi confesses her love to Ichika, while Houki and the others watch like hawks to make sure that he's not too interested in return. Meanwhile, with the school still heavily damaged, and a desperate need to repair Byakushiki, Ichika visits its manufacturer, Kuramochi Engineering... And while he's gone, a shadowy plot seizes its chance to strike IS Academy. What is the Kurokagi, and its World Purge ability? How far will the girls go to catch Ichika's heart?