Kou is a term that can refer to various subjects, but it is often associated with a type of traditional Japanese sweet known as wagashi. These confections are typically made from ingredients like rice flour, red bean paste, and sugar, and are enjoyed during tea ceremonies or special occasions. In some contexts, Kou may also refer to a character in popular culture, such as in anime or video games. These characters often embody specific traits or themes, contributing to the storytelling and engagement of the audience.