Japanese designers are famous for their talent to mix functionality and cool design because rationality is in their philosophy and lifestyle. Japanese design brand Muji designed this narrow three-storey house in Tokyo. Like its products, the house is about the concept of simplicity, maximizing the available space and its functions. The challenge was that the lot is extremely narrow for a house but the designers managed to use every single inch in a smart way. White color and light natural wood make the space look bigger, and lightweight stairs don’t make it look heavy. The storage was made completely hidden not to clutter the space and to make the interior look stylish.