A Century of Temptation(2010)

Izanai: Hyakunen no Koi

After a long shift at the coffee shop, barista Sevi takes in a seductive vampire named Hornet! But when their one-time tryst turns into a torrid affair, Sevi's feelings come rushing to the surface. Can a human truly care for a creature of the night? Izanai: Hyakunen no Koi follows gorgeous vampires as they frolic and feed without restraint! No mortal or monster can predict the instant when their pulse will race at the sight of a brand-new mate…but when the end is imminent, is it worth it to fall in love?

(Source: Digital Manga, Inc.)