Asami Kurosaki occupies Room 5 of the Narutaki-Sou apartment building with her adoptive mother, Sayoko Kurosaki. Her adoptive father died during her childhood, leaving the pair to navigate life independently. At twelve years old, with a June 26 birthday, Asami assumes substantial domestic duties due to Sayoko’s unreliable nature and lack of accountability. Sayoko displays a dark disposition, battles productivity, sleeps excessively, and contributes minimally to finances or chores. Asami oversees household expenses, maintains budgets, and ensures essential tasks are completed. Their impoverished living space features cardboard boxes repurposed as furniture and bedding.

To sustain their limited resources, Asami forages for food and implements conservation tactics like diluting orange juice. While Sayoko’s portrayal varies across adaptations—manga includes her initial suicidal tendencies, omitted in the anime—Asami’s role as the stabilizing anchor remains unchanged. Despite hardships, a genuine connection persists between them, with Sayoko conveying underlying care for Asami beneath her flaws. Asami’s background emphasizes her resilience in preserving family stability against financial strain and her mother’s emotional turmoil.