Binbou Shimai Monogatari
Based on the seinen manga by Kazuto Izumi, serialised in Sunday GX.
The anime centers around two sisters - Kyou (age 15) and Asu (age 9) - whose mother died from an illness and whose father, heavily in debt, mysteriously disappeared.
Now they are living in a small and miserable apartment from the few money the older sister gets for her part-time job. But as long as they have each other and are supported by kind people they continue their every-day life never losing the bright smiles on their faces nor their strong spirit.
This is a heartwarming story about two poor, yet happy, sisters.
Info: TV Series, 10 episodes, on air from 30.06.2006 till 15.09.2006