Ayumi Otosaka is a beloved character from the anime series Charlotte. She is depicted as a cute and innocent little sister who adores her older brother. In her Nendoroid form, Ayumi comes with four different expressions - a smiling expression, an angry expression, an excited expression, and a blissful expression. She also comes with special accessories such as her signature omelette rice filled with the Otosaka family's special pizza sauce, as well as a nose bleed part to recreate her explosive blood noses. Fans of the series can enjoy posing Ayumi in various ways to recreate scenes from the show.

Ayumi Otosaka plays a significant role in the anime series Charlotte as the lovable younger sister of the protagonist. Her character is known for her cheerful and caring personality, as well as her unwavering love for her brother. Throughout the series, Ayumi's character undergoes various challenges and emotional moments, adding depth to her portrayal. Fans of Charlotte appreciate Ayumi for her innocence and positivity, making her a memorable and endearing character in the series.