Rokka hexagonal tiles receive an original Japanese metal glaze, glass based glaze, and primary color based glaze. Some of the tiles have a pattern on the surface. It requires some manual processing to create an expressive wall, for example, adding a color to the material clay, coloring some tiles by hand, and combining tiles with various textures. They represent the sensitivity of Japanese work. With dignity, beauty, simplicity, colorfulness, and more, Rokka tiles can be installed in a wide variety of places.