JPSS, for information about studying in Japan's universities and graduate schools. > News/Useful information for studying abroad > Guide for Studying Abroad in Japan > Living Guide for International Students in Japan > Buy It Cheap
Most of Japanese private flats are unfurnished. So, you will have to provide your own furniture. However, it costs a lot to buy brand new furniture, it is recommended to buy secondhand.
There are flea markets where used items are sold at a low price. Usually, they are held at a big park on weekends. Your local city or town hall may have information on regional flea markets that are being held.