"Night Wizard The Animation" is a 13-episode anime series based on the tabletop role-playing game of the same name. The story centers on Renji Hiiragi, a high school student who leads a double life as a Night Wizard, a magical protector tasked with defending the world from malevolent forces known as Dark Wizards. These Dark Wizards seek to exploit the power of the "Eclipse," a phenomenon that connects the human world to the demon realm, threatening to plunge both into chaos.

Renji is joined by Elis Shiho, a transfer student who harbors a mysterious past and possesses her own magical abilities. Together, they form a team of Night Wizards, which includes Kureha Akabane, a skilled swordswoman, and Anzelotte, a powerful sorceress. The group operates under the guidance of their mentor, Albert, who provides them with missions and support in their battle against the Dark Wizards.

The narrative unfolds as Renji and his team confront various Dark Wizards, each with unique motivations and abilities tied to the Eclipse. The stakes escalate when Elis's true identity is revealed: she is the "Key of Eclipse," a being whose existence is crucial to the balance between the human and demon worlds. This revelation puts her at the center of the conflict, as both sides seek to control her power.

Throughout the series, the characters grapple with themes of trust, sacrifice, and the consequences of wielding immense power. The story explores the moral complexities of their roles as protectors, as well as the personal struggles they face in their dual lives. The climax involves a decisive battle to prevent the Eclipse from consuming both worlds, with Renji and his team forced to make difficult choices to protect what they hold dear.

The anime blends action, fantasy, and elements of mystery, with a focus on character development and interpersonal dynamics. The plot is driven by the interplay between the protagonists' personal growth and their overarching mission to safeguard the balance between worlds. The series maintains a balance between episodic adventures and an overarching narrative, culminating in a resolution that ties together the characters' journeys and the central conflict.