Bakemonogatari, Vol. 12

Koyomi confronts his final foe, Guillotine Cutter. It's former-human-turned-vampire vs. the human vampire-hunter cult leader. But Koyomi hears that Hanekawa is being held hostage, and to save her, he'll have to push his new powers to the limit.

Is Koyomi willing to lose his humanity before he can regain it?