Kogane is a friend of Oniyasha who lives in the same 14th-century Japan setting. He can often be found by the riverbank, where he and Oniyasha spend time together when the protagonist avoids his strict dance training. Their friendship is built on shared moments of leisure and imagination, as they frequently make up ridiculous stories. Kogane has a personality that is rough around the edges, but he is surprisingly dependable. Beneath this coarse exterior, he actually seems to hold a deep, hidden interest in dance. In the story, Kogane serves a supporting role as Oniyasha's closest companion and confidant, offering him a personal escape from the demands of his family's theater troupe. His reliability and his latent appreciation for the art of movement are his most defining traits.