This work by the designer In Seoungsik is furniture based on an X’Y’Z’axis in addition to the conventional XYZ system. The original chair is composed only of vertical, horizontal, and right-angled lines that never intersect. By applying hyper-perspective, perception and bodily interaction are altered. Depth produces a bench, height a high stool, both a lounge chair. These transformations are not only graphic but also functional. When multiple pieces are placed, they connect space through vanishing points, forming a distorted yet tangible world.