"Battle Athletes OAV" is a six-episode original video animation series set in a futuristic world where athletic competitions determine the pinnacle of human achievement. The story centers on Akari Kanzaki, a young girl from Earth who aspires to become the next Cosmic Beauty, a prestigious title awarded to the universe's greatest athlete. The competition takes place at the University Satellite, an elite training academy where students from across the galaxy train rigorously to prove their physical and mental prowess.

Akari, initially seen as an underdog due to her lack of natural talent, relies on her determination and hard work to compete against more gifted athletes. Her journey is marked by challenges, including intense rivalries, personal setbacks, and the pressure of living up to her family's legacy—her mother was a legendary Cosmic Beauty. Along the way, Akari forms bonds with fellow competitors, such as the confident and skilled Kris Christopher and the enigmatic Lahrri, who each have their own motivations for pursuing the title.

The series explores themes of perseverance, self-discovery, and the pursuit of excellence. The narrative balances moments of intense athletic competition with character-driven drama, highlighting the personal struggles and growth of the participants. The University Satellite serves as a microcosm of ambition and rivalry, where friendships are tested, and alliances are forged in the quest for glory.

As the competition progresses, Akari faces increasingly difficult opponents, culminating in the final showdown to determine the next Cosmic Beauty. The series concludes with a resolution that underscores the importance of resilience and the value of striving for one's goals, regardless of the outcome. Through its focus on character development and the dynamics of competition, "Battle Athletes OAV" delivers a compelling story of ambition and camaraderie in a high-stakes athletic setting.