Demand for incense sticks in Japan has declined dramatically in recent years, due to stricter fire safety regulations. On the other hand, sales of room fragrance products have been rapidly expanding and getting popular among young people. In light of this trend, designers developed a leaf-shaped incense that doubles as a scent diffuser. The particular traditional Japanese paper used for this product is the result of five years of research and development. It can withstand embossing and is more resistant to tearing than normal washi.