In book 15 the last book of Vampire Knight what happens?

Answer 1

In book 15, acording to Wikapedia - Yuki is taken to the headquarters of the Hunter Society. There, she is questioned by Cross and Yagari, but she refuses to disclose any information about Kaname. Kaito takes a wounded child back to the headquarters, and Yuki is given permission to help find the culprit. Afterwards, Yuki visits members of the vampire aristocracy to introduce herself as the new head of the Kuran family. Yuki declares that she wants to re-establish the Night Class at Cross Academy, and Shiki, Rima, and Aido collaborate with her to bring it into fruition. Sara Shirabuki decides that she wants to enter the new Night Class with her servants. Meanwhile, as the new Night Class arrives at Cross Academy, Kaname kills the Head of the Hio family. Yuki hears of trouble going on in town, and she, Zero, and Maria go to stop it. Maria tells Yuki that she wants Zero for herself. Yuki talks with Ichijo about Kaname, but Sara uses her spider familiar to spy on them. Sara intervenes in their conversation just as Ichijo warns Yuki about the new blood tablets that are about to go on the market. Yuki has troubles containing her thirst for blood, so Zero takes Yuki to a secluded area where she can drink his blood. - And no, 15 is not the last book but book 16.