"Kingyo Chūihō!" is a short anime series that revolves around the life of a young girl named Futaba Tsukushi, who is expelled from her home and forced to live in a dilapidated apartment complex called Kingyo Apartments. The story begins with Futaba being abandoned by her mother, who leaves her with nothing but a goldfish named P-chan. Struggling to survive on her own, Futaba encounters a variety of eccentric and quirky residents in the apartment complex, each with their own unique personalities and struggles.

The narrative explores Futaba's daily life as she navigates her new environment, balancing her desire for independence with the challenges of being a child living alone. The residents of Kingyo Apartments, including a mysterious man named Shū, a former boxer named Kintarō, and a young boy named Satoshi, become a makeshift family for Futaba. Despite their oddities, they provide her with support and companionship, helping her adapt to her circumstances.

Throughout the series, Futaba's resourcefulness and determination are highlighted as she finds ways to earn money, take care of P-chan, and interact with the people around her. The story also delves into the backstories of the other residents, revealing their vulnerabilities and the reasons they ended up at Kingyo Apartments. Themes of resilience, community, and the search for belonging are woven into the narrative, as Futaba and the residents form bonds despite their hardships.

The tone of the series shifts between lighthearted humor and poignant moments, capturing the struggles and small victories of its characters. Futaba's journey is one of growth and self-discovery, as she learns to navigate her unconventional life while maintaining her optimism and spirit. The series concludes with a sense of hope, emphasizing the importance of human connection and perseverance in the face of adversity.