Nagisa Furukawa is a fictional character from the visual novel and anime series Clannad, created by Key. She is a high school student known for her shy and gentle personality. Nagisa struggles with her health, which affects her school life and social interactions. Nagisa is passionate about theater and dreams of reviving the school's drama club. Throughout the series, she forms a close bond with the protagonist, Tomoya Okazaki, who helps her overcome challenges. Her character represents themes of love, friendship, and personal growth, making her a beloved figure among fans of the series.