Kusakabe Harmonia is a professional transparent watercolor. When painted, each color separates into different tones and leaves a rough, grainy texture. Paints like this are called granulating colors. The name comes from the word "harmony."
There are 24 colors, each in a 10 ml tube. Colors are sold one by one, and there are two 12-color sets. Together, the two sets cover all 24 colors.
A single color can give a range of shades. Every color in the line is semi-transparent.