In adherence to an emphasis on environmental protection and good health, “green” building materials that are certified are used, and the entire space is laid out for full accessibility. The use of leather is deliberately minimized. The space is organized based on functions. The arrangement in the open-plan area, the layout of the walls, and the coordination of the colors together make for rich gradations and highlight the distinctiveness of a life in this living space. Grayish white serves as a keynote color to connote composure and simplicity.