By putting the weight on the muddiness with regard to the harmony of clarity and muddiness, the color is its strength. We added strong three-dimensionality, more warmth, and elegance to create a calm color. For the light ink stick, it is a blue with calmness and astringency. It has a shade of gray blue with a small amount of blue where a slight redness can be felt. For the thick ink stick, it has strength and thickness, and it is a blue-type black with a slight shade of blue. It can be used for hanging scrolls in kanji, small number of characters, and kana. Thick to extra light ink sticks can be used. As it gets older, we believe the ink stick calms in color, and its three-dimensionality, sharpness, personality, and features grow stronger. Manufactured in 1992