In Japan, maple leaves turn red and ginkgo leaves turn yellow in autumn. This is one of the most beautiful and typical traditional Japanese landscapes. This phenomenon is called "koyo" in Japan, which is written with the same Chinese character for "紅葉" as for maple. Since ancient times, maple and Japanese people have been deeply connected, and the phenology of the plant has influenced our culture. People in western Japan love maple-shaped cakes. Called "Momiji Manju," these sweets are wrapped in red bean paste.