Yuki learns that Maria's true identity is Shizuka, the pureblood vampire who bit Zero and turned him into a vampire. With this information, Yuki accepts a deal from Shizuka and offers her blood in order to save Zero...

After suffering a mortal wound, Shizuka quietly dies in Ichiru's arms. Meanwhile, Yuki and Zero try to find where Shizuka may have gone, but Zero is constantly thwarted by his Level E seizures...

After Shizuka Hio's death, peace is restored at the academy. As usual, Yuki is busy with her duties as Guardian when Zero, who has been gone for quite some time, comes back.