Our human friends are attacked by a mysterious male vampire. Luckily—or unluckily, depending on your point of view—Ko's half-vampire mode is growing ever more powerful. Who turned the attacker, and what is he after? No sooner are these questions answered than new ones arise as a second attacker arrives on the scene—and she's targeting both humans and vampires!

Volume 12 of the Call of the Night manga series by Kotoyama.