Seventeen-year-old Chiyuki Matsuoka was born with heart problems, and her doctors say she won'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. In order to save Chiyuki's life, Toya finally bonds with Chiyuki. But what she doesn't know is that Toya has refused to make the full partnership...