I chose a color from Sailor's bottled ink for fountain pens, "Bottled Ink for Fountain Pens Ink Kobo Dye 20ml," which has a lineup of over 100 colors, and made a pen.
It is a twin-type marker with a moderate stiffness and a fine tip that is ideal for detailed writing.
This ink comes in a pen rather than an ink bottle or ink cartridge.
It is a writing instrument that allows you to enjoy a little bit of bottled ink without having to use a fountain pen or dip pen.