Bungubox

Bungubox inks are made by Sailor for the small chain of stores called Bungubox, in Japan. They are sold in 30 ml glass bottles, triangular/heel-shaped. Outside of Japan, the inks, which are dye-based, can be considered very expensive, regardless of country, but they are more reasonably priced in the physical stores. Reviewers say they are similar to “ordinary” Sailor inks, but that some have better water resistance, if a dryer feel to them.