District Zero is one of the districts of Central. It is a place of anarchy, as neither soldiers go there nor the central law takes any effect. It has also become a place of refuse for the low-end people of the country.
District Zero is first shown when Septieme Rodelia visits Central and runs away from Martis after a dispute over ideals. She heads right into District Zero without knowing her way around. There she is surrounded by a group of thugs but Martis comes on time to save her from them.
Later it is revealed that Oland comes from the same district. When he was a child, he lived there with his parents and street siblings. He was sold off and left for war. He visited the place in his injured condition after the Karrussel incident was over. Alice also followed him there in search of what war relief really meant.