"GA: Geijutsuka Art Design Class" is a slice-of-life anime centered around a group of high school students attending an art-focused school, specifically the Geijutsu High School. The narrative revolves around the daily lives and creative endeavors of five classmates in the art design class: Kisaragi, Noda, Tomokane, Namiko, and Miyabi. Each character brings a distinct personality and artistic perspective, contributing to the dynamic and often humorous interactions within the group.

Kisaragi, the protagonist, is an earnest and somewhat naive student who is deeply passionate about art but often struggles with self-doubt. Noda, her best friend, is more laid-back and pragmatic, often providing a grounded counterpoint to Kisaragi's idealism. Tomokane is energetic and eccentric, frequently injecting humor into the group with her unpredictable behavior and unconventional ideas. Namiko, the most reserved of the group, is thoughtful and introspective, often offering insightful observations about art and life. Miyabi, the oldest and most mature, acts as a mentor figure, guiding her classmates with her experience and calm demeanor.

The series explores the students' experiences as they navigate various art-related projects, assignments, and challenges. Episodes often focus on specific themes or techniques, such as color theory, perspective drawing, or the history of art, blending educational content with the characters' personal growth. The narrative is episodic, with each installment highlighting a different aspect of their artistic journey, from creating self-portraits to experimenting with new mediums.

Interpersonal relationships and the camaraderie between the characters are central to the story. The group frequently collaborates on projects, shares creative ideas, and supports one another through both artistic and personal struggles. Their interactions are marked by lighthearted humor, occasional misunderstandings, and moments of genuine emotional connection.

The anime also incorporates elements of art history and theory, often referencing famous artists, movements, and works. These references are seamlessly integrated into the narrative, providing context for the students' projects and enriching the viewer's understanding of the art world. The series balances its educational aspects with a focus on the characters' everyday lives, creating a relatable and engaging portrayal of young artists navigating their passions and aspirations.