"Love Setter" is a manga series that blends elements of romance, sports, and comedy, centering around the lives of high school students involved in tennis. The narrative primarily revolves around two main characters: Haruto, a talented but aloof tennis player, and Aoi, a spirited and determined girl who joins the tennis club despite her lack of experience. Their dynamic forms the core of the story, as their contrasting personalities and approaches to the sport create both conflict and camaraderie.

Haruto, known for his exceptional skills and stoic demeanor, initially appears disinterested in teamwork and dismissive of Aoi's efforts. Aoi, on the other hand, is driven by a strong passion for tennis and a desire to prove herself, even as she struggles with the technical aspects of the game. Their interactions evolve from tense and competitive to supportive and collaborative, as they gradually learn to appreciate each other's strengths and weaknesses. The series explores their growth not only as athletes but also as individuals, as they navigate challenges both on and off the court.

The supporting cast includes members of the tennis club, each with distinct personalities and roles that contribute to the team's dynamics. These characters provide additional layers to the story, offering subplots that delve into themes of friendship, rivalry, and perseverance. The series also incorporates moments of humor and lightheartedness, balancing the more intense and emotional aspects of the narrative.

As the story progresses, the focus shifts between the characters' personal struggles and their collective goal of achieving success in tennis tournaments. The matches are depicted with a mix of strategic detail and emotional intensity, highlighting the characters' development and the bonds they form through their shared experiences. The series concludes with a resolution that ties together the characters' journeys, emphasizing the importance of teamwork, determination, and mutual respect.