Vivy is the protagonist of the anime series 'Vivy: Fluorite Eye's Song.' She is an AI created with the purpose of making people happy through her singing. Vivy is a humanoid AI with a mission to bring joy to humans through music. Over the course of the series, she is tasked with preventing a future where AI and humanity are at war. Her journey involves understanding human emotions and the complexities of choices, making her a central figure in the series' exploration of AI and humanity.