Most of the leather materials used for shoes and bags are treated with heavy-metal (such as chromium) industrial chemical (*1). Occasionally, “hexavalent chromium” - a highly toxic substance – can be detected from a leather product. We started to develop a leather material which could be produced in high volume using plant-derived tannin. Eventually, we have created “Russety Leather®”, the Yasashii-Kawa, a leather material treated by a plant-derived tanning agent, which is a natural ingredient extracted from Acacia decurrens (*3). Leather is our passion. We cherish animal leather and return it back safely to the Earth. We will nurture a consumption-culture embraced with “friendliness,” and pass it on to a bright future while coexisting with nature.