Yuki is busy patrolling the school grounds for Day Class girls who are trying to sneak chocolates to the Night Class boys for St. Xocolatl’s Day.

Maria’s masked servant reveals himself as a jealous figure from Zero's past whom Zero has not seen since their separation long ago.

After Shizuka Hio’s death, peace is restored at the academy. But when Zero returns, the vampires of the Senate accuse him of murder.

In order to protect the academy, the Headmaster confronts the head of the Hunter Society while Rido is still on the rampage.