"Oroka na Tenshi wa Akuma to Odoru" centers on the unlikely partnership between Lilia, a carefree and somewhat lazy angel, and Vigne, a diligent and responsible demon. Tasked with observing humanity, Lilia is sent to Earth to gather information on human behavior, but her lackadaisical approach often leads to comedic misadventures. Vigne, on the other hand, is assigned to monitor Lilia and ensure she completes her duties, despite her own frustrations with the angel's laid-back attitude. The dynamic between the two characters drives much of the narrative, as their contrasting personalities create a blend of humor and occasional heartfelt moments. The story unfolds in a modern, mundane setting, where the two supernatural beings navigate everyday human life while attempting to fulfill their respective missions. Lilia's tendency to prioritize leisure and indulgence over her responsibilities frequently puts her at odds with Vigne, who strives to maintain order and professionalism. Despite their differences, the two gradually develop a mutual understanding and camaraderie, often finding themselves in situations that blur the lines between their angelic and demonic roles. Supporting characters, such as other angels and demons, occasionally appear to add depth to the world and provide additional comedic or dramatic scenarios. The series explores themes of friendship, responsibility, and the complexities of human nature, all while maintaining a lighthearted and comedic tone. The episodic structure allows for a variety of humorous and slice-of-life situations, with each episode highlighting the evolving relationship between Lilia and Vigne as they learn from each other and the humans they observe.