Kuro ga Ita Natsu(1990)

Kuro ga Ita Natsu

Japan, summer of 1945. Nobuko, an elementary school girl, saves a little cat from crows. She desparately wants to keep the cat in her home. It is the time everyone suffers shortage of food, so naturally her parents don't like the idea. But Nobuko manages to convince them. She names the cat Kuro (black). Kuro eventually brings laughter to the family. However, the war situation becomes worse and worse...

(Source: sazuma.com)