"Miyakawa-ke no Kūfuku" is a short-form anime series that serves as a spin-off of the popular series "Lucky Star." The narrative centers on the daily lives of the Miyakawa sisters, Hinata and Hikage, who live together in a small apartment. Hinata, the younger sister, is a cheerful and energetic elementary school student, while Hikage, the older sister, is a high school student with a more reserved and pragmatic personality. The sisters struggle with financial difficulties, often resorting to creative and humorous methods to make ends meet.

The plot unfolds through a series of episodic vignettes, highlighting the sisters' interactions and their attempts to navigate their modest lifestyle. Hinata’s optimism and Hikage’s resourcefulness often clash, leading to comedic situations. Despite their financial struggles, the sisters maintain a close bond, with Hinata frequently relying on Hikage for guidance and support. The series also introduces a few recurring characters, such as their neighbor, a kind-hearted woman who occasionally helps them, and Hikage’s classmates, who provide additional comedic and situational dynamics.

The tone of the series is lighthearted and slice-of-life, with a focus on the mundane yet endearing aspects of the sisters' lives. The humor often arises from their exaggerated reactions to everyday challenges, such as budgeting for groceries or finding ways to entertain themselves without spending money. While the series does not delve deeply into dramatic or complex plotlines, it effectively captures the charm of its characters and their relatable struggles, making it an enjoyable watch for fans of the genre.