Their Choice (彼等の選択 Kerare no Sentaku) is the sixth episode of the Vampire Knight Series.
Young Zero talks to his Master and feels regretful for not listening to him before. He asks why Vampires hurt people. Yagari replies by saying that they are pitiful beings who live only by instinct and that vampires can only be the vampire hunter's enemies. Back in present time, Zero stands in the pool staring at Yagari, deciding to let Yagari kill him. But Yuki gets in the line of fire and tells Yagari that even though she doesn't know the connection Yagari and Zero have, she won't let Zero die. Zero pushes her away and says that it's alright. Yagari then gets ready to pull the trigger. Headmaster Cross then comes and stops Yagari from shooting Zero. When Yuki and Zero get out of the pool, Yagari tells Yuki that she really is the adopted daughter of Headmaster. Even though Zero was trying to kill her before, she sees Yagari as the enemy. Then Headmaster tells Yuki he'll handle the situation here and for her to go back to her dorm.
In her dorm room, Yuki can't stop worrying about Zero. During her class time, she sees that Zero isn't in class and wonders where he is. Later that day, Yagari is about to head into the Night Class's class room, when Yuki stops him, asking what he had done to Zero. Yagari tells her that Zero was put in a separate room because he was on the verge of killing someone and heads into the classroom. Later, when Yagari leaves the classroom, he sees that Yuki is still standing out there, waiting for him. Yuki tells him that she won't move until he tells her where Zero is. Due to her persistence, Yagari tells her that Zero is in Headmaster's guest room and she goes there to find him.
She arrives at the room and knocks on the door, asking Zero why he didn't leave, since the door had no lock on either side. Zero tells her to leave and starts to close the door, but Yuki stops him and asks him why he is doing everything Yagari tells him to. In response, he tells her of a time when he saw a Level E for the first time. Zero says that there was a lovely, beautiful nurse at his school. Then, suddenly, one day, that nurse became a Level E right in front of them. Yagari was about to shoot her, but young Zero gets in the way trying to protect her. The Level E nurse attacks young Zero. But Yagari gets Zero out of the way, which causes Yagari to lose one of his eyes in the process. Zero tells her, ever since he saw that, he became terrified of vampires. That was what Yagari had taught him and that Zero is willing to do anything Yagari says. Yuki says that he is wrong and says that all Zero is doing is giving up and running away from everything. Then Yuki tells him to let her in. After she gets no response, Yuki lets herself in and led Zero to the bathroom to continue from last night.
Inside the bathroom, Yuki unbuttons her outer jacket. She says that this is the only thing she can do and tells Zero to drink her blood. At first, Zero was hesitant, but he does what she says anyway. After a while, Zero finishes. Zero states that he is a hideous being who can't control his urges for blood. He then tells Yuki to just abandon him and that the blood tablets are only a temporary measure. Yuki refuses to abandon him, and she also says that Zero is still Zero and that it's fine to hate vampires or even her, and that those are ways of not giving up. Zero says that he couldn't possibly ever be mad at her and asks her if she is alright. Yuki replies that she is fine and that she has no problem going to class tomorrow. Then she tells him that he'd better go to class tomorrow as well.
After that, she is walking in the courtyard. Kaname approaches her from the opposite side and notices the ends of her hair is wet. At this time, Yuki had a bandage on her neck from where Zero bit her. Kaname was about to take that off, and is afraid he would see Zero's bite marks. Instead, Kaname hugs Yuki, asking since when did Yuki stop telling him things. He then leaves her. Yagari appears beside Kaname in the trees and asks Kaname why Kaname didn't kill Zero. Kaname said that it was not to lose Yuki and then he continues forward.
The next day, Yuki still doesn't see Zero in class. Elsewhere, Yagari enters a room where Zero is and asks if Zero's wound has healed. Over where Yuki is, she hears one of the students say that Yagari is taking a long time. That makes her realize something, and then she rushes over to Zero. She saw, just in time, Zero was about to get killed by Yagari, who is using his own Bloody Rose. Yagari fires twice, but Zero re-directs the gun's aim to miss him. Yagari leaves the room saying that a certain woman is still alive. Yuki doesn't know what Yagari meant. Yuki lets it slide and goes into the room and tells Zero that she thought he was going to die. Zero reassures her by telling her that he'll stop running away. Yuki, not wanting Zero to see her tears, goes over to the curtain saying that she believes she made the right choice.
List of Character Appearances
(Yuki in her mind in front of a curtain) "I will not regret...my decision."
Feast in the Moonlight