Kanna Nakazato is one of the main characters in the anime, introduced as an aspiring idol who seeks to join the Plannosaurus Gachi Koseibutsu Bu, a school club dedicated to the study of extinct creatures. Her background as a performer-in-training stands in direct contrast to the club's focus on paleontology, yet her decision to become a member stems from a genuine, if unexpected, curiosity about ancient life. Kanna approaches the subject of dinosaurs and other prehistoric species with an energetic and lively perspective, which distinguishes her from the club's more academically inclined members.

In terms of personality, Kanna is portrayed as enthusiastic and full of energy, bringing a vibrant presence to the group. Her mindset is shaped by her ambitions in the entertainment industry, leading her to see the world through a unique filter. A key aspect of her character development involves discovering parallels between the dramatic, ever-changing world of prehistoric life and the sparkling, high-energy realm of her idol aspirations. This realization allows her to connect her two seemingly disparate passions, finding a personal meaning in the study of extinction and adaptation that resonates with her own journey as a performer.

Her role in the story serves as a catalyst for the club's dynamic. While the club president, Tetori Kitadani, provides the serious scientific knowledge about paleontology, Kanna offers a fresh and accessible viewpoint that makes learning about ancient creatures more engaging. She often questions and reacts to the scientific information with a performer's sense of drama and wonder, pushing the narrative forward through her lively interactions. Together with Tetori and a mysterious creature named Dino, Kanna forms the core trio of the series, and their comedic and educational interactions are central to the plot. Her primary motivation is to balance her commitment to becoming an idol with her newfound passion for extinct creatures, exploring how both worlds fuel her curiosity and ambition.

Regarding key relationships, Kanna shares a significant dynamic with Tetori Kitadani, the club head who is deeply interested in paleontology. Their contrasting approaches to the club's subject matter create a comedic and productive partnership, with Tetori representing expertise and Kanna representing enthusiastic discovery. She also interacts closely with Dino, the mysterious unidentified creature whose true nature is a recurring source of adventure and questions within the series. Through her journey, Kanna experiences notable development by learning to integrate her idol aspirations with her scientific curiosity, finding that the principles of change, adaptation, and spectacle exist in both the prehistoric world and on the stage. While she does not possess supernatural or combat-oriented abilities, her notable skills include her energetic charisma, her ability to see educational topics through an entertaining lens, and her determined focus on her idol training, all of which she applies to her club activities.