MoonPhase
月詠~MOON PHASE~ (original)
Paranormal photographer Kouhei stumbles into the arms of Hazuki, a vampire beauty who has waited for years to be freed from a forgotten castle. Unwilling to part with her unwitting hero, the petite vamp follows Kouhei home and starts causing trouble. But domestic disorder is the least of Kouhei’s problems. With dark forces gathering, he’s about to enter a world he can’t begin to comprehend!
Starring Chiwa Saito, Hiroshi Kamiya
Watch "MoonPhase" on Amazon released in 2004. It's a comedy and animation show, and has a rating of 6.7 out of 10 from Imdb which is usually fine for this kind of show.