In 2011, we launched "Mixable Ink (60ml)," a fountain pen ink that allows you to mix your own preferred colors. Because each ink color is composed of a small amount of pigment, it's easy to create the desired color, and it has been very well received. However, some customers felt that the amount of ink in each color was too much for mixing. Therefore, to make it easier to try creating your own ink colors, we are releasing "Mixable Ink Mini," with a 20ml ink capacity. Since you can choose and mix your favorite colors from all nine available ink colors, and anticipating that you might line up multiple ink bottles, we have created a completely new, diamond-shaped ink bottle that looks beautiful on your desk. The sharp angles on the bottle make it easier to see the ink's shade, allowing you to visualize the ink color when writing, and you can also enjoy the changing appearance of the ink bottle depending on how the light hits it. Empty bottles (empty ink bottles) for storing your mixed inks are also available, so please purchase them together.