Divine Academy
"You want my blood?" Katrina asks me, looking at me as if I'm crazy.
"I just need a little bit," I respond. "Just enough to coat the crest in front.
Katrina glances at the front of the book; there's a small shield pictured above the book's title. The shield is the emblem of the demon race, with the four demon leaders portrayed on it.
"I'll just prick your finger with a needle, and then you just have to rub it over the crest," I reply as I turn my attention back to Katrina. A few minutes ago, her cheeks were flushed pink from her recent orgasm; now, those same cheeks look pale.