Character Voice: Mayumi Yoshida
She is from the Koinumaru clan, warriors who were part human and part canine. Nowadays, members of her clan still have a dog’s ears and a tail, and although Konoha tries to hide her non-human features, they tend to pop out when she gets excited. Every time the Thousand Years Protector awakes, a member from the Koinumaru clan is selected to become the Millennium Guard and accompany her on her mission. Konoha is proud to have been selected this time. She enrolled at Misono Academy to assist Kamui, but she has been having so much fun lately that she sometimes forgets how important her mission is.
Members of the Koinumaru clan were largely regarded as monsters, in the old days. Thus, they lived in seclusion in the mountains, far from civilization. One day, a dimensional bend near their village caused evil spirits from the Elemental world would cross over and corrupt one of the Koniumaru ninjas. Fortunately, Kamui appeared in time to stop him and save the village. To repay Kamui for saving the village, the Koinumaru have sent one of their members to assist her each time she awakes.
Source: Wikipedia, "List of Arcana Heart characters," available under the CC-BY-SA License.