This ink stick is made so that the dispersion of carbon particles is constricted to create a bright tone harmonized with darkness and strength as well as warmth and grace with redness and white light. This is a seiboku (blue ink stick) of a bright bluish black color with a little darkness, creating an opaque, rich, and strong complex tone of reddish bluish purple. As the years go by, the ink stick will also grow, and the properties and characteristics will develop remarkably. This 春光長壽 (shunkochoju, spring light longevity) has been developed for the process of production for the past few years. We look forward to the changes and the possibility of expressing the color of an old Ink Stick. Manufactured in 1988.