The Vampire Progenitor and the Tsundere Knight

Abel, a progenitor vampire who loves sleeping, good food, and basking in the sun, is awakened by someone in his resting place. Cranky after being roused, he sets out to find clues about who disturbed him. A tsundere knight who hates laziness, is content with a full stomach, and often stays up late working gets caught up in a conspiracy threatening the entire world. With a strong sense of justice, she begins searching for clues to unravel the whole affair. War clouds gather between the vampire empire and the human empire. Both sides are poised for battle, and the world may plunge into war once more at any moment. It is then that the vampire progenitor and the tsundere knight meet.