Aozumi (blue ink) made by the Japan Ettegami Association, with a wooden case. The name is written on the back of the case. Used a few times, but still perfectly usable. High-grade Aozumi Retail price: 3,520 yen This blue ink was developed for ettegami (picture letters), carefully selecting high-quality glue and pine soot as ingredients. It is characterized by its natural ink color.