By creating a moderate harmony with contradicting conditions such as clarity/muddiness, light/dark, and strong/weak, it is finished as a refined color with three-dimensionality that is calm overall. For the light ink stick, it is a strong and sharp blue where the three-dimensionality, blueness of the deep ocean, and astringency can be felt. For the thick ink stick, the muddiness is its thickness, and it is a blue-type black where a slight firmness can be felt. It has no luster. It can be used for hanging scrolls in kanji, small number of characters, and kana. Thick to 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 1994