"Omamori Shimasu, Doko-mademo" is a manga series that blends elements of romance, supernatural themes, and slice-of-life storytelling. The narrative centers around a young woman named Yuzu, who works as a shrine maiden at a local Shinto shrine. Her life takes an unexpected turn when she encounters a mysterious man named Kaito, who claims to be a deity. Kaito reveals that he has been tasked with protecting Yuzu due to a divine connection tied to her family lineage. Despite her initial skepticism, Yuzu gradually accepts Kaito's presence as he begins to assist her in both her daily life and her duties at the shrine.

The story explores the evolving relationship between Yuzu and Kaito, as well as the challenges they face together. Kaito's divine nature often leads to supernatural occurrences, which Yuzu must navigate while maintaining her responsibilities at the shrine. The narrative delves into themes of duty, faith, and the balance between the human and spiritual worlds. As the series progresses, Yuzu learns more about her family's history and the significance of her role as a shrine maiden, while Kaito grapples with his own purpose and the limitations of his divine powers.

Supporting characters include other shrine workers, townspeople, and occasional supernatural beings who interact with Yuzu and Kaito, adding depth to the world-building. The manga balances lighthearted moments with more serious undertones, creating a narrative that is both engaging and reflective. The interplay between Yuzu's grounded, human perspective and Kaito's otherworldly nature drives much of the story's tension and emotional resonance. Through its exploration of tradition, spirituality, and personal growth, "Omamori Shimasu, Doko-mademo" offers a compelling blend of genres that appeals to fans of both romance and supernatural fiction.