Nagisa Minase is a central character in the anime series 'Kanojo mo Kanojo.' She is introduced as a kind-hearted and determined girl who becomes the second girlfriend of the protagonist, Naoya Mukai. Despite her initial shyness, Nagisa is deeply committed to both Naoya and their unconventional relationship. She is known for her cooking skills and her earnest efforts to support and understand Naoya's feelings. Throughout the series, Nagisa's character adds depth and humor, often balancing the dynamics between the other characters with her gentle yet firm personality.