Ayumi Otosaka is a cheerful and energetic character from the anime series Charlotte. She is the younger sister of the protagonist, Yuu Otosaka. Ayumi is known for her innocence, kindness, and love for making food, especially her signature dish, 'Pizza Sauce Curry.' Her role in the series is pivotal as her sudden disappearance and the subsequent events deeply impact Yuu, driving him to discover more about their supernatural abilities. Ayumi's character highlights themes of family bonds and the innocence of youth in the series.