"Akuma de Koibito" is a manga series that blends elements of romance, comedy, and supernatural themes. The narrative centers around Rinko Hanasaki, a high school girl who inadvertently summons a demon named Abel while attempting to perform a love spell. Abel, a powerful and charismatic demon, initially intends to claim Rinko's soul as payment for granting her wish. However, complications arise when Abel becomes bound to Rinko due to a magical mishap, forcing him to remain in the human world and assist her in her romantic endeavors.

Rinko's initial wish is to win the affection of her crush, Shion Amawa, a popular and kind-hearted classmate. As the story progresses, Abel's presence complicates Rinko's life in unexpected ways. Despite his demonic nature, Abel begins to develop genuine feelings for Rinko, creating a love triangle that drives much of the series' tension and humor. The dynamic between Rinko, Abel, and Shion forms the core of the narrative, with Rinko navigating her conflicting emotions and the challenges posed by Abel's supernatural abilities.

Throughout the series, Rinko and Abel encounter various supernatural entities and situations, often leading to comedic or dramatic scenarios. Abel's demonic powers, including his ability to manipulate emotions and summon otherworldly creatures, frequently cause chaos but also serve to protect Rinko from harm. As their bond deepens, Rinko begins to question her initial feelings for Shion, while Abel struggles with his growing attachment to a human, which conflicts with his demonic instincts.

The supporting cast includes Rinko's friends and classmates, who provide additional layers to the story through their interactions and subplots. The series explores themes of love, identity, and the clash between human and supernatural worlds, all while maintaining a lighthearted and comedic tone. The evolving relationship between Rinko and Abel, marked by moments of vulnerability and growth, remains the central focus, culminating in a resolution that addresses their emotional and supernatural challenges.