Chiyo Mihama is one of the main characters in the anime and manga series Azumanga Daioh. She is a child prodigy who skipped several grades and joined high school at the age of 10. Despite her young age, Chiyo is intelligent, polite, and kind-hearted, often acting as the 'little sister' of the group. Her innocence and naivety add a comedic element to the story, and her interactions with her classmates highlight the series' themes of friendship and growing up.