Matsu Maeda appears in the school-themed adaptation as the wife of Maeda Toshiie and aunt to Keiji Maeda. She serves as the group's highly skilled cook, preparing meals that nourish the Maeda members and foster their cohesion. Intelligent and responsible, she effectively oversees household affairs. Matsu provides caring yet pragmatic oversight for her impulsive nephew Keiji, frequently guiding his actions. Her interactions with Toshiie reflect a supportive partnership, where she aids and supports his decisions, demonstrating quiet influence within the family unit. She is consistently portrayed as a stabilizing force, prioritizing family well-being through practical actions and interpersonal management.