Nushiyo Ooya is the elderly landlady of the Matazuresou apartment complex in Kasukabe, where the Nohara family once lived after their own home was destroyed. She is a 67-year-old woman who inherited the building following the death of her husband. Her demeanor is often cold and stern, especially toward children, a trait rooted in a deeply tragic past: thirty years earlier, her husband and their three-year-old daughter died in a traffic accident. This loss left her emotionally guarded and resentful of the youthful energy that reminds her of what she lost. Despite her harsh exterior, she is not an antagonist; rather, she is a lonely figure shaped by grief, and her interactions with the Noharas occasionally reveal flickers of vulnerability or grudging tolerance. Her role in the story is primarily as a neighbor and property owner, providing a backdrop for the family’s temporary living situation. She has no special abilities beyond the practical management of her apartment building, and her character does not undergo significant development, remaining a static but memorable presence that adds depth and a touch of melancholy to the series’ comedic world. Her key relationships are with the Nohara family, especially with Misae, who often bears the brunt of her sternness, and with Shinnosuke, whose chaotic behavior clashes with her desire for quiet and order.