Hina Satou is a central character in the anime series 'Kamisama ni Natta Hi' (The Day I Became a God). She is introduced as a peculiar girl who claims to be a god who can foresee the end of the world. With her lively and eccentric personality, Hina decides to spend her last days on Earth with the protagonist, Youta Narukami, helping him fulfill his wishes. Throughout the series, Hina brings joy and unexpected changes to Youta's life, making her a pivotal figure in the storyline.