As someone who love vampire armies in many games, you get props from me for their inclusion (even as an off-screen enemy). I like that it was told from a first person perspective of someone in the room who is not the focus. I love the slow (as slow as these short stories allow anyway) burn of the reveal of the greater problem. You also get (fake) bonus points from me for filling in empty space with an illustration.
The theme could of perhaps been used more effectively. It was a little difficult to see where that kind of "battle" comes in here.