Nekosatsu

After committing a massive blunder, police officer Sasami is demoted and transferred to a remote island . On this somewhat eerie island, known as "Satetsu Island," he meets a senior officer who, for some reason, happens to be a cat. Surrounded by locals who are nothing like the city crowd, these officers at the Satetsu Island police station works to solve the island's complex and mysterious cases. Sasami, a huge cat lover, gradually settles into this strange environment, but...

(Source: Kodansha, translated)