Ko-Kutani is one of the oldest styles of Kutani ware, originating in the early Edo period (1603 CE–1868 CE). This style is known for its dynamic yet subtle charm, featuring bold designs in five colors—green, yellow, red, purple and dark blue—known as gosai. Ko-Kutani often depicts nature-inspired motifs like flowers, birds and landscapes. Despite its brief production period, ending in the early 1700s, ko-Kutani remains highly esteemed internationally as one of Japan's major overglaze enamel styles.