Millennium Snow Vol. 2 (manga)

Now that her bond with Toya has healed her heart, Chiyuki wants to live her life to the fullest. What she doesn't know is that Toya has refused to make the full partnership with her. He doesn'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 she'll be able to keep?