Akiko Omae is the mother of Kumiko Omae, the protagonist of the Sound! Euphonium series, and appears as a minor supporting character in the film Our Promise: A Brand New Day. She is married to Kentarou Omae, and together they have two daughters, Kumiko and the older sister Mamiko. In terms of appearance, Akiko is a middle-aged woman with fluffy, neck-length dark brown hair and amber eyes. Her personality is portrayed as calm and gentle, presenting a warm and supportive presence within the Omae household. She is often depicted carrying out domestic duties, such as cooking and preparing meals for her family. As a mother, she is caring and responsible, and she expresses a desire for her daughters to lead happy and successful lives. Her role in the story is primarily as a background figure who helps to ground Kumiko's high school life in a stable and loving family environment. She is shown to be supportive of Kumiko's commitments to the concert band, providing a sense of normalcy and home for her. While she is not deeply involved in the main plot concerning the Kitauji High School concert band, her presence helps to contextualize Kumiko's personal life and motivations. Her relationship with Kumiko is that of a typical, affectionate mother-daughter bond, and she also navigates the dynamics with her elder daughter, Mamiko. Akiko does not undergo significant personal development within the film, as her function is to be a consistent and reassuring figure for the main character. She does not possess any notable abilities related to the musical or competitive aspects of the story, as her significance is entirely rooted in her role as a parent.