"Fangs of Repentance"Yuuki and Zero are instructed to perform the duties of normal prefects by confiscating contraband from students of the Day and Night Classes. Upon reaching the Moon dorm, Yuuki is suspicious Zero is hiding something from her and falls purposely to which Zero catches her, causing them both to collapse on the ground. Yuuki triumphantly seizes a packet of blood tablets, which aggravates Zero who snatches it back quickly and leaves. Yuuki runs after him and follows him into the city. Still haunted by her fear of vampires, she follows a boy into an isolated area of the city. She is then chased and attacked by the boy who is a ex-human vampire and another former human vampire. Kaname appears and destroys the vampire and brings Yuuki back to the dorm. Later, Yuuki searches for Zero and finds him on the stairway, appearing uncomfortable. She tries to talk to him, but he suddenly clutches her and unable to control himself, bites her. In shock, Yuuki realizes that Zero is a vampire.
