"Gabriel Dropout" is a comedic slice-of-life manga series centered around angels and demons sent to Earth to study human behavior. The protagonist, Gabriel White Tenma, is an angel from heaven who initially arrives on Earth as a model student, diligent and kind-hearted. However, after becoming addicted to online gaming and the comforts of human life, she transforms into a lazy, unmotivated shut-in who prioritizes leisure over her angelic duties. Her behavior starkly contrasts with her original purpose, creating much of the series' humor.

Gabriel shares her daily life with three other supernatural beings: Vignette April Tsukinose, a demon who is unexpectedly kind and responsible, often taking care of Gabriel despite their opposing origins; Satanichia McDowell Kurumizawa, a demon with grand ambitions of conquering humanity but who is comically inept and easily distracted; and Raphiel Ainsworth Shiraha, an angel who appears sweet and gentle but harbors a mischievous and sadistic streak, often teasing Satanichia. The dynamic between these characters forms the core of the series, as their interactions blend humor, absurdity, and occasional moments of genuine camaraderie.

The plot primarily revolves around their misadventures in the human world, where they attend school and attempt to navigate mundane human activities while grappling with their supernatural identities. Gabriel's laziness and gaming addiction frequently clash with her angelic responsibilities, while Vignette's nurturing nature often leads her to clean up after her friends. Satanichia's over-the-top schemes to assert her demonic dominance consistently backfire, and Raphiel's playful manipulation adds an unpredictable edge to their interactions. The series balances lighthearted comedy with occasional moments of character development, exploring themes of identity, friendship, and the contrast between expectations and reality.

The manga maintains a consistent episodic structure, with each chapter focusing on humorous scenarios that highlight the characters' quirks and relationships. The blend of supernatural elements with everyday school life creates a unique comedic tone, as the characters' divine or demonic traits often clash with the ordinary world around them. The series does not delve deeply into overarching plotlines, instead relying on its strong character dynamics and situational humor to engage readers. Through its comedic lens, "Gabriel Dropout" offers a playful take on the concept of angels and demons, subverting traditional expectations and delivering a lighthearted, entertaining narrative.