Ayumi Hayami is the daughter of naval Captain Youhei Hayami and his wife Miyuki. She features in scenes portraying the Hayami family's home life, primarily interacting with her parents within their domestic setting. These sequences establish Captain Hayami's personal world distinct from his command duties. Ayumi visibly expresses sadness over her father's frequent, extended absences caused by his military service. Her emotional response to his departures humanizes Captain Hayami, underscoring the personal sacrifices borne by military families. Through Ayumi, the narrative emphasizes the tension between family bonds and duty, particularly during the Captain's departures for missions. Her presence contributes to a thematic contrast between the rival commanders, as Admiral Red is similarly shown with a wife and children. Ayumi's role, however, remains focused on illustrating the domestic impact within Captain Hayami's own household, separate from direct involvement in the naval conflict.