Episode 3

TL;DR

As disciplinary committee members, Zero and Yuki hold dorm inspections. After Yuki unknowingly pulls out Zero’s blood tablets, Zero leaves the school with Yuki following. Yuki ends up encountering a vampire boy who bites her, forcing her to flee. Zero confronts the vampires but the vampire boy gets away. Kaname intervenes, killing the boy and comforting Yuki. During their discussion, Cross and Kaname reveal that Zero was bitten by a pureblood vampire and the grim fate of those bitten by pureblood vampires. Later, Zero loses control and bites Yuki, leaving her in shock. He apologizes, but both struggle with the aftermath of his actions.

Recap

Cross makes breakfast for Zero and Yuki to celebrate their first day as true disciplinary committee members as he gives them the task to handle dorm inspections. Meanwhile, the Night Class prepares for an unannounced dorm inspection, prompting Kaname to order Aido to remove his collection of junk, much to Aido’s dismay. During inspections of the Day Class dorms, Yuki confiscates photos of Night Class students and berates Zero for slacking off. Suspicious of what Zero is hiding in his pocket, Yuki later retrieves his box of blood tablets but mistakes them for medicine. Zero snatches the box of blood tablets from her hand and dismisses her concerns before leaving the school grounds with Yuki following him despite the school rules.

Yuki loses sight of Zero and becomes anxious, eventually encountering a mysterious boy with a red balloon. While retrieving the balloon, she follows him to an isolated area, unaware of a lurking woman she bumped into earlier. The boy reveals himself to be a vampire and bites Yuki on the hand, prompting her to flee and hide in a bell tower. Zero, hearing her scream, confronts the woman vampire and struggles with the morality of killing her, ultimately shooting her after she calls him "comrade." He hesitates when he sees the boy, briefly mistaking him for his brother, Ichiru. The boy climbs to Yuki’s hiding spot, but Kaname arrives, killing the boy and comforting a shaken Yuki.

Kaname reveals the boy was a Level E vampire and lies to Yuki that Zero has returned to the school. Zero overhears their conversation as he hides below and struggles to control his bloodthirst. Kaname later confronts Cross, questioning his resolve to maintain peace given Zero’s precarious condition. Cross reveals Zero’s tragic past, including the murder of his family by a pureblood vampire. Yuki finds Zero in pain and tries to empathize by sharing her fear of vampires as monstrous creatures. However, Zero rejects her efforts, leading Yuki to run away.

Zero stops her but loses control, biting her neck in a moment of bloodlust. Yuki, shocked, sees Zero’s red eyes and fangs before he regains control and apologizes. Kaname explains the grim fate of those bitten by pureblood vampires: death or transformation into a vampire. As Zero grapples with his actions, Yuki remains in disbelief at what just occurred.