Blood Honey

What will happen when a vampire meet a donor enthusiast? The popular nurse, Akabane Yuki, is a descendant of the vampire. He found the blood of a donor enthusiast, Mayuzumi Osamu, to be extremely tasty. He started taking care of him. One day, Mayuzumi suddenly told Yuki that he wouldn’t see him anymore. What exactly happened?
(from Attractive Fascinante)