"11 Piki no Neko" centers on the daily lives of 11 cats and their interactions with each other and their human caretaker. The narrative unfolds in a lighthearted, slice-of-life manner, focusing on the distinct personalities and quirks of each feline. The cats, though anthropomorphized to some extent, retain their natural behaviors, creating a blend of humor and relatability for pet owners and animal enthusiasts.

The story is episodic, with each chapter or episode highlighting a specific cat or a group of cats, often exploring their playful antics, rivalries, and moments of camaraderie. The human caretaker, while present, remains a secondary figure, serving more as a facilitator of the cats' adventures rather than a central character. The cats' dynamics are driven by their individual traits—some are mischievous, others shy, and a few are particularly clever or lazy. These traits lead to a variety of scenarios, from comedic misunderstandings to heartwarming displays of affection.

The setting is primarily a modest home and its surrounding environment, providing a familiar backdrop for the cats' escapades. The simplicity of the setting allows the focus to remain on the cats and their interactions, emphasizing their relationships and the small joys of their everyday lives. The tone is consistently warm and humorous, with occasional moments of gentle poignancy that highlight the bond between the cats and their human caretaker.

"11 Piki no Neko" does not rely on complex plotlines or dramatic conflicts; instead, it thrives on its charming portrayal of feline behavior and the subtle, often humorous ways the cats navigate their world. The series appeals to audiences seeking a relaxing, feel-good experience, offering a delightful glimpse into the lives of its endearing feline cast.