Taito is torn between having lunch with Saitohimea or eating the meal that Haruka prepared. Luckily, he is saved by a call from Gekkou as insects have invaded the school and school has been cancelled for the day. It turns out that the school is situated in a place where portals from multiple dimension intersect and that the military are in charge of the area but no one over 18 can get into the area because of a barrier...