Seventeen-year-old Chiyuki Matsuoka was born with heart problems, and her doctors say she wonâ€™t live to see the next snow. Toya is an 18-year-old vampire who hates blood and refuses to make the traditional partnership with a human, whose life-giving blood would keep them both alive for a thousand years.Â In order to save Chiyukiâ€™s life, Toya finally bonds with Chiyuki. But what she doesnâ€™t know is that Toya has refused to make the full partnership with her. He doesnâ€™t want to doom her to a thousand years of life. Chiyuki swore to Toya that she would never leave him alone, but is that a promise sheâ€™ll be able to keep?