Japanese style painting (Nihonga) is based on a painting style that has continued for more than a thousand years, and the materials used for it are traditional materials cultivated in history. Generally, hemp paper (main raw materials of hemp and mulberry) and silk are used with natural paints such as ink, mineral pigments, whitewash (white paint, oyster shell), and mineral pigments, and glue (nikawa: made from fish bones). The technique of drawing the shavings as an adhesive is used.

Iwaenogu is a variety of natural ores, semi-precious stones (peacock stone, crystal, agate, etc.), and finely crushed coral, which are expensive. The shade of color is divided according to the size of the particles. Generally, the particles are different, so instead of mixing the colors like in an oil painting, the paints are layered one by one to color them. We also use metal materials such as gold leaf, platinum leaf, and silver leaf,.