The Vexations of a Shut-In Vampire Princess, Vol. 1 (light novel)

Shut-in vampire Terakomari, or Komari for short, awakens from her slumber to find she's been promoted to a commander of the army! The thing is, though, her new squad has a reputation for being violently insubordinate. And although Komari was born to a prestigious vampire family, her hatred of blood has made her the picture of mediocrity-scrawny, uncoordinated, and inept at magic. With the odds stacked against her, will the help of her trusty maid be enough for this recluse to blunder her way to success?