"Koi to Kemono to Seitokai" is a manga series that blends elements of romance, comedy, and supernatural themes. The story is set in a high school where the student council plays a central role in maintaining order and addressing unusual occurrences. The protagonist, a seemingly ordinary student, becomes entangled in the affairs of the student council after a chance encounter with its enigmatic members. These council members are not typical students; they possess unique abilities tied to their animalistic traits, which are revealed as the narrative progresses.

The protagonist's life takes a dramatic turn when they discover that the student council is tasked with managing a hidden world of "kemono," beings with animal characteristics who coexist with humans in secret. The council's responsibilities include mediating conflicts between humans and kemono, ensuring their coexistence remains undisclosed, and protecting the school from supernatural threats. As the protagonist becomes more involved with the council, they uncover their own latent connection to this hidden world, which complicates their relationships and responsibilities.

Key characters include the stoic and disciplined student council president, who wields significant authority and harbors a mysterious past; the vice president, whose playful demeanor masks a sharp intellect and formidable combat skills; and the treasurer, a quiet yet perceptive individual with a deep understanding of the kemono world. The protagonist's interactions with these characters drive much of the narrative, as they navigate the challenges of balancing their ordinary school life with their newfound role in the council.

The plot explores themes of identity, belonging, and the complexities of human-animal relationships, often through humorous and heartfelt moments. Conflicts arise from both external threats, such as rogue kemono or rival factions, and internal struggles, including the protagonist's growing feelings for a council member and their uncertainty about their place in this dual world. The series balances its supernatural elements with slice-of-life scenarios, creating a dynamic and engaging narrative that appeals to fans of multiple genres.