There's a famed rumor about a boundary that exists from those lying to themselves and others to fit in within society. This boundary snatches up those so called liars and gives them "masks" within this boundary and they have different appearances from their other self within the real world. Inside the boundary is a semi-destroyed city-scape but there are no people except for those with "masks" and one other being known as the "The Great Observer" who rules over the Boundary known as the Eighth Layer. Those with "masks" must fight the Observer or live out their days within the boundary for a number of 90 days. Within those 90 days they must have gotten a change of heart to stop wearing their masks. For if one does not pass the 90 day trail or have fought the Observer, they'll become "lost" in the Boundary- forever trapped. Meanwhile back in the real world they become missing people cases until the Observer erases their existence completely, stripping them of their lives. This is the so called rumor that has trapped Namiyo Sakoda and the rest of her classmates within the Boundary. Within the boundary they must choose what to do. Will they fight or live to change themselves? It's now up to them on what happens next in this game within boundaries. "Tell me..do you accept death as your fate? Or will you fight it?"