Newspapers are distributed by local companies that cover a given neighborhood. In larger towns the bigger publishers' such as Asahi, Yomiuri, and Mainichi have distributers that only deal with their publications, delivering the newspapers on moped like bikes that you can see sputtering around at all times of the day. These distributers receive the papers from the printing plant add local flyers and advertisements then bundle them for the local markets and stores or deliver them to individual homes. My friend's family use to run a Yomiuri distribution center here in Nishinomiya. In rural areas, like Hase in Nara prefecture, one distributer will offer many different newspapers. The signboards above the shop advertise the newspapers available.