Japan has unveiled a next-generation 3D-printing construction system capable of building a full-sized, livable home in only 24 hours. Using advanced concrete extrusion and automated robotics, this technology drastically reduces material waste, labor costs, and construction time—offering a fast, sustainable solution for future housing needs. • The system uses high-strength printable concrete that is layered by robotic arms to form walls, curves, and structural components with extreme precision. •