The Ikuemi family's home has always been a place where cats come and go, each leaving behind a trail of fur, mischief, and unforgettable affection. This autobiographical manga traces the household's decades-long history of cat ownership, starting with the very first feline who started it all: a majestic tom named Kiyo, regarded as the family's cat king. The narrative follows the succession of cats that lived with Ryo Ikuemi and her family, from the dignified and aloof Kiyo to later arrivals such as Cucumber, a quirky cat who earned the nickname “kappa” for his peculiar appearance, and many others over the years.

Each cat is given its own spotlight as the story recounts how they were adopted, their unique personalities, the everyday chaos they caused, and the quiet, tender moments that made them beloved. The series moves chronologically through the cats’ lives, touching on the joys of a new kitten, the bittersweet reality of aging and saying goodbye, and the gentle humor that comes from living with creatures who refuse to follow any rules. Along the way, the manga also reflects on how pet‑care norms and the family's own circumstances changed across the decades, offering a heartfelt glimpse into the enduring bond between humans and their cats. The narrative is anchored in the warm, observant voice of the author, who portrays the cats not as mere pets but as distinctive individuals who shaped the family’s daily life.