"Okusama wa Seito Kaichō" centers on Hayato Izumi, a high school student who becomes the student council president. His life takes an unexpected turn when his childhood friend and fiancée, Ai Tennōji, transfers to his school and assumes the role of vice president. Ai is determined to support Hayato in his duties while also ensuring their engagement remains intact, despite the challenges posed by their school environment and the attention they receive from other students.

The narrative explores the dynamics of their relationship as they navigate their responsibilities within the student council. Ai’s assertive and affectionate nature often leads to comedic and romantic situations, as she openly expresses her love for Hayato, much to his embarrassment. Hayato, while initially reserved and focused on his duties, gradually becomes more aware of his feelings for Ai, though he struggles to reconcile them with his sense of propriety and the expectations placed upon him as student council president.

The series introduces a supporting cast of characters, including fellow student council members and classmates, who contribute to the comedic and dramatic elements of the story. These characters often find themselves caught up in the antics surrounding Hayato and Ai’s relationship, adding layers of complexity to the plot. Themes of love, responsibility, and personal growth are woven throughout the narrative, as the characters confront their emotions and the challenges of balancing their personal lives with their roles in the student council.

The story progresses through a series of episodic arcs, each focusing on different aspects of Hayato and Ai’s relationship and their interactions with the school community. The tone shifts between lighthearted comedy and moments of heartfelt emotion, creating a balance that underscores the central themes of the series. As the story unfolds, the characters’ relationships evolve, and their individual growth becomes a key focus, culminating in a narrative that emphasizes the importance of communication and mutual understanding in both personal and professional contexts.