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.

While the Night Class is at the Aido family's vacation home, Yuki, driven by her desire to stop hurting Zero, tries to regain her memory of the past and becomes haunted by even more powerful visions.

Yuki is continually haunted by visions of blood. Nevertheless, she is determined to find out about her past from Kaname, but he repeatedly evades her question. Zero sees Yuki looking troubled and goes to the Moon Dormitory by himself.

Yuki is continually haunted by visions of blood. Nevertheless, she is determined to find out about her past from Kaname, but he repeatedly evades her question. Zero sees Yuki looking troubled and goes to the Moon Dormitory by himself.

Kaname asks Yuki to be his lover. The Night Class guards begin accompanying her everywhere, and Yuki cannot hide her embarrassment. Why does Kaname go to such great lengths to protect Yuki?

Yuki wakes up a vampire, and her memory of her childhood returns. She now remembers her father, her mother, and her brother. Despite her mixed emotions, Yuki cannot suppress her vampire instincts.

Yuki now understands who she really is. Worried about Zero, she sneaks out of her room to find him. Zero cannot accept Yuki's new self, and he points the Bloody Rose gun at her.

In order to protect the academy, the Headmaster confronts the head of the Hunter Society while Rido is still on the rampage. In the meantime, Ichiru pays a visit to Zero and shoots him with the Bloody Rose gun.

Yuki understands the position she has been put in, and remembering Kaname's words, "Do what you have to do," Yuki decides that as Guardian, she must protect all the students at the academy and fight Rido.

All of Zero's strength is not enough to kill Rido, and Rido runs away. However, Kaname finds Rido, and Zero arrives soon after. The two of them attack Rido. After the fight, the sun rises upon the devastated Cross Academy.

All of Zero's strength is not enough to kill Rido, and Rido runs away. However, Kaname finds Rido, and Zero arrives soon after. The two of them attack Rido. After the fight, the sun rises upon the devastated Cross Academy.