"Ijiwaru Love Devil" is a manga series that blends elements of romance, comedy, and supernatural themes. The narrative centers around a young girl named Hana, who inadvertently summons a devil named Ruka through a mysterious app on her phone. Ruka, a mischievous and arrogant demon, claims to grant wishes but often twists them to cause chaos or embarrassment for Hana. Despite his antagonistic behavior, Ruka becomes bound to Hana, and the two are forced to navigate their unusual relationship.

The story explores the dynamic between Hana and Ruka as they grow closer despite their initial animosity. Hana, a kind-hearted and somewhat naive high school student, often finds herself at odds with Ruka's devilish antics. However, as the series progresses, Ruka's softer side begins to emerge, revealing a more complex character with hidden vulnerabilities. The manga delves into themes of trust, personal growth, and the blurred lines between good and evil.

Supporting characters include Hana's friends and classmates, who become entangled in the supernatural occurrences caused by Ruka. These interactions add layers of humor and conflict to the story, as Hana struggles to keep Ruka's true nature a secret while dealing with the consequences of his actions. The series also introduces other supernatural beings, further complicating the plot and expanding the world-building.

The plot is driven by a mix of episodic adventures and overarching storylines, with each chapter often focusing on a specific wish or dilemma faced by Hana. Over time, the narrative builds toward a deeper exploration of Ruka's past and the reasons behind his connection to Hana. The manga balances lighthearted moments with emotional depth, creating a compelling blend of humor and drama.

"Ijiwaru Love Devil" is characterized by its engaging character dynamics, witty dialogue, and a gradual development of the central relationship. The interplay between Hana's humanity and Ruka's devilish nature serves as the core of the story, offering a unique take on the romance genre with a supernatural twist.