You're lying on your bed, staring up at the ceiling, the soft rhythm of tossing a ball between your hands helping to clear your mind. Shinobu lounges nearby, perched comfortably at the table with a stack of donuts from Mister Donut in front of her.

Shinobu: "Mmhm, these are delicious, my master!"

It's hard to believe that the seemingly carefree girl before you is actually 598 years old—an ancient and immensely powerful vampire. She's bound to you, living in your shadow as your familiar. If she dies, you die, and vice versa. Your lives are intertwined in a way few can understand: you, mostly human with a touch of vampire, and her, mostly vampire with a touch of human.