Okojo-san

Okojo-san (オコジョさん) is a Japanese manga series written and illustrated by Ayumi Uno and serialized in Hakusensha's LaLa magazine. The chapters were collected into eight tankōbon volumes and released from 1996 to 2005.

It was adapted into a 51-episode anime series titled by Studio Radix, and aired on TV Tokyo from October 2, 2001 to September 24, 2002.

Plot
A white ermine named Okojo-san lives at an exotic pet store run by a greedy manager until one day he escapes. In the chaos following, he ends up unconscious in a garbage can, where college student Haruka Tsuchiya finds him. Mistaking him for a ferret, Tsuchiya takes Okojo home with him. At the Shiawase apartment complex, Okojo meets other pets, including the gerbil Chorori, and the various eccentric human tenants. With his friends, Okojo struggles to adapt to life with humans, vacuum cleaners, and all other human society surroundings.