Cells at Work! Cat Manga Ends: Saying Goodbye to the Inner World of Cats

Cells at Work! (Hataraku Saibou) has officially concluded the journey of one of the cutest and most intriguing spin-offs in its universe, Cells at Work! Cat (Hataraku Saibou Neko). The manga, which began its publication in Monthly Shonen Sirius in May 2023, covered the daily lives of cells within a cat's body, their struggle with hairballs, and the complexities of feline biology. The series finale was announced to fans with the final chapter published as of March 2026.
Written by Choco Aozora and brought to life with illustrations by Meku Kaire, this spin-off was prepared under the supervision of the original series creator, Akane Shimizu. Throughout the series, topics ranging from why cats tend to vomit to cellular responses against parasite infestations were explained with the fun and educational tone that has become the hallmark of the Cells at Work! brand. Spanning a total of 4 volumes, this adventure managed to become a favorite among cat lovers and biology enthusiasts alike.
Since its debut in 2015, the Cells at Work! brand has grown into a massive franchise. In addition to the main series about the human body, we have seen many different works such as Cells at Work! Code Black, which deals with an unhealthy lifestyle, Cells at Work! Baby, which covers the development of infants, and even Cells at Work! Bacteria, which enters the world of bacteria. However, Cells at Work! Cat held a special place as the first installment in this universe to focus so deeply on the inner world of a non-human creature.
While the end of this spin-off is a sad moment for followers of the series, Kodansha is expected to continue expanding this successful universe with new projects. For those who want to explore the mysterious world of cats on a cellular level, this series will remain a completed treasure on bookshelves. Cells at Work! fans have now turned their eyes to potential future spin-offs of the series and other media adaptations of the brand.




