Otonashi stands 160cm tall with short black hair that ends at her neck and discerning light blue eyes often framed by glasses. She typically wears business attire, reflecting her serious and hardworking nature. Her professional demeanor is frequently tested by the unwelcome advances of her colleague Katori, a source of clear frustration. Her name translates to "soundless." She was born on September 20, making her a Virgo.