Yoru to Chi no Kankei.

is a Japanese light novel series written by Hideto Maruyama, with illustrations by osa. The series began publication on July 10, 2009 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
Night: Night sound. A noble and noble, 17-year-old vampire girl. Blood: Kengo Suhara. A mediocre but extremely healthy boy with the finest blood. Kankei: For vampires, humans are just food and lower creatures.

However, contrary to such recognition, Suhara tries to submit the vampire's night sound by making the best delicious blood vertical. Of course, there is no need for the night sound to silently follow it ...!?