Koshiki Miyuki comes from a family of well-known archers. She was known as a prodigy, and there were really high hopes for her. But then an illness took her eyesight. Because of her family iron-fisted attitude on archery she is burdened with worrying about what to do with herself. Due to Miyazawa Kengo being in the same family situation as her, he is one of her many concerns. She committed suicide in the real world.