Episode 4

TL;DR

Kaname intervenes after smelling blood, protecting Yuki from Zero and taking her to the infirmary, where Cross reveals Zero’s tragic transformation into a vampire after a pureblood attack. Yuki overhears Kaname and Cross discussing transferring Zero to the Night Class, leaving her conflicted about his fate. Seeking answers, Yuki visits Kaname at the Moon Dormitory but is confronted by Aido, whose probing questions and actions lead to Kaname stepping in to protect her. Kaname warns Yuki not to visit alone and refuses her plea to keep Zero in the Day Class, explaining his inevitable descent to Level E. Meanwhile, Zero, overcome with despair, attempts to end his life but is stopped by Yuki, who promises to stand by him. As Cross works with the Hunter’s Society to manage the situation, Kaname watches Yuki comfort Zero, his feelings for her evident but unspoken.

Recap

Kaname smells blood and rushes to find Yuki, standing protectively in front of her to shield her from Zero. Sensing the tension, Yuki fears Kaname might harm Zero, like the Level E boy vampire he killed earlier, and tries to intervene but faints, leaving Zero to catch her. Kaname criticizes Zero for drinking too much of Yuki’s blood, leaving her unable to stand, and questions if her blood was that delicious, leaving Zero horrified at himself. Kaname takes Yuki to the infirmary, where she begins to tear up. When Kaname asks if she is afraid of vampires, she denies it, though clearly shaken. Cross arrives, noting the smell of blood has agitated the Night Class, prompting Kaname to return to the Moon Dormitory. While tending to Yuki’s bite marks, Cross apologizes for hiding the truth about Zero from her. He explains Zero’s tragic past: four years ago, his family was killed by a pureblood vampire, and Zero was found with bite marks, marking his transformation into a vampire despite being originally human. Cross reassures Yuki that purebloods are the only ones who can turn humans into vampires, so she has no reason to worry about becoming one herself.

At the Moon Dormitory, Aido speculates about the source of the blood scent from the previous night, suspecting it was Yuki’s, though no explanation was given. Kaname confronts Cross in his office, questioning his decision to keep Zero in the Day Class. Cross argues there is no precedent for such a transfer, but Kaname insists it’s unnecessary, prompting Yuki, who overhears their conversation, to feel conflicted. While she understands Zero belongs with the Night Class as a vampire, she also understands his hatred of other vampires and begins to feel guilty for her earlier harsh words about them.

In class, Yuki notices Zero’s absence and lies to her friend Yori about her neck injury, claiming she was scratched by a tree during patrol. Worried, Yuki runs to the Moon Dormitory and encounters Aido, who leads her to Kaname but not before questioning her about her bite marks. Aido reveals Kaname instructed the Night Class to forget the scent of her blood, but he recognized it as hers. His remarks about Kaname’s affection for Yuki embarrass her, and his increasingly intrusive questions anger her. As Aido freezes the ground and her feet in frustration, Kaname arrives, dispelling the ice and slapping Aido for his behavior. Apologizing to Yuki, Kaname reassures her she does not need to face such situations and advises her not to visit the Moon Dormitory alone, suggesting Zero owes her that much after biting her. When Kaname mentions Zero "stole" from her, Yuki grows uneasy, questioning his phrasing. Kaname asserts he cannot ignore someone biting the girl he holds dear and refuses Yuki’s request not to transfer Zero, explaining that all humans turned into vampires eventually degenerate into Level E. Zero would not want Yuki to witness his downfall, he warns. Distressed, Yuki runs away.
Elsewhere, Akatsuki expresses confusion over Kaname’s fixation on Yuki, criticizing his decision to share space with Zero, a member of a vampire hunter family. Kaname replies that Yuki is the only girl he holds dear. Yuki later visits Zero in his room, finding him aiming his Bloody Rose gun at himself. She tackles him, causing him to drop the gun, but he turns it on himself again, begging her to shoot him before he degenerates into a Level E vampire. Yuki refuses, determined to stand by him despite his protests. Zero storms out, but Yuki chases after him and hugs him from behind, recalling a memory of comforting him years ago when he was tormented by the vampire bite. She tells him she is not afraid of him and vows to be his ally.

Meanwhile, Cross meets with a well-dressed man from the Hunter’s Society, who assures him they will uncover the truth about Zero and take necessary action, no matter how harsh. From a window, Kaname watches Yuki comforting Zero, his expression unreadable as the scene unfolds.