Ryota Sato is a bright and energetic fifth-grade student in class 5-2. His normal school life is filled with games, foolish jokes, and the misunderstandings that arise from his premature interest in the opposite sex. He frequently and accidentally finds himself in risqué scenarios and awkward encounters with his female classmates, which form the episodic core of the stories and typically conclude with a well-executed punch line.

Though the central character, his friends are nearly as vital to the narrative, essential for capturing the full spirit of the school environment. The girls in his class often project a more mature demeanor but are ultimately just as childish and sometimes even more mischievous than the boys. The everyday stories focus on light-hearted comedy, unfolding during typical elementary school events like classes, lunch breaks, and library visits.