Vampire Romantic Type

The year is 1918, and it is set in the imperial capital. Ruri, a female student of noble blood, has her blood sucked by a beautiful vampire named Shirasagi. As her body changes, strange events occur one after another. Ruri is saved by a vampire named Kokuyou, who is an acquaintance of her great-grandmother, but...!? The Taisho era vampire tale begins! (Source: Akita Shoten, translated)