Ukraine chooses to explore the intersection between traditional building methods and improvised structures during times of war crises. The title refers to the Ukrainian word for roof, a primordial form of architecture that, in wartime, takes on new meanings, becoming the first line of defense in a conflict fought on a large scale in the skies, with drones and missiles. The term “hardcore” is used here in its construction sense, referring to the material from which cement is derived to build the foundations of a building.