FIVE WINDOWS is the model of MINASE watch where the brand’s unique case-in-case structure originated: the inner case encapsulates the watch’s movement and dial, within the voluminous outer case, with cut-out glass windows. He recalled his single-minded focus on the goal of developing a model that epitomized MINASE’s state-of-the-art cutting and polishing technology. However, two decades after the FIVE WINDOWS watch was created, he remembered a conversation he had with the designer of the watch, in which he said it would be intriguing if MINASE could make a watch case that resembled yukimi-shoji (traditional Japanese paper sliding doors, whose lower sections incorporate glass windows), allowing the world to be viewed through those glass windows. This particular style of shoji is an architectural feature in Japan that lets the external view and light into houses. These doors combine shoji sections that slide up and down to cover or reveal the glass windows underneath, so people can see the outside as they please, like an ever-changing landscape picture in a frame—a traditional Japanese way of living.