This is a set of Mino-yaki small plates designed by Ayako Koshino, the mother of the Koshino sisters. The set includes two small plates in a paper box, and there are three sets in total. That's six plates. The longest side is just over 15 centimeters, and they have an interesting, irregular 12-sided shape. The surface patterns of the plates are also unique. They are a slightly yellowish cream color. The back of each plate is marked with "AK."