Miyuki Hayami, wife of Captain Youhei Hayami and mother to their daughter Ayumi, manages the family home during her husband's naval deployments. Scenes featuring Miyuki and Ayumi convey their anxiety over Hayami's extended absences, with Ayumi visibly distressed by her father's absence. These domestic moments humanize Captain Hayami by contrasting his military duties with his personal life. Miyuki's presence emphasizes the sacrifices military families endure, a theme mirrored in the portrayal of Admiral Red's family. Miyuki appears in sequences establishing Hayami's home life and motivations, focusing on family bonds and the emotional weight of her husband's high-risk profession. Her character remains confined to these contexts across documented media, with no elaborated backstory, development, or extended role.