"Renai Hōteishiki" is a manga series that explores the complexities of romantic relationships through a structured, almost mathematical approach. The narrative centers on a group of high school students who participate in a unique experiment orchestrated by their school’s enigmatic student council. The experiment, referred to as the "Love Equation," assigns each participant a numerical value based on their personality, appearance, and social standing. These values are then used to pair students into couples, with the goal of determining whether love can be quantified and predicted through logic and data.

The protagonist, a reserved and academically focused student, is reluctantly drawn into the experiment. Initially skeptical of the concept, they gradually become intrigued by the process and their assigned partner, who contrasts sharply with their own personality. The story delves into the dynamics of their relationship, as well as those of the other participants, highlighting the tension between calculated compatibility and genuine emotional connection. As the experiment progresses, the students begin to question the validity of the system, confronting issues of self-worth, societal expectations, and the unpredictable nature of human emotions.

Secondary characters include a range of personalities, from the confident and popular to the introverted and insecure, each grappling with their own struggles within the framework of the Love Equation. The student council, portrayed as both manipulative and idealistic, serves as the driving force behind the experiment, with their motivations and methods becoming increasingly ambiguous as the story unfolds. The narrative balances moments of lighthearted humor with deeper explorations of identity, trust, and the inherent flaws in attempting to reduce human relationships to a formula.

Throughout the series, the relationships evolve in unexpected ways, challenging the initial premise of the experiment. The manga examines themes of free will versus determinism, the role of chance in love, and the limitations of logic in understanding the human heart. By the conclusion, the characters are left to reconcile their experiences with the experiment, ultimately arriving at a more nuanced understanding of love and connection.