From publisher blurb:
Japan is densely populated and thoroughly urbanized. Japan’s largest cities teem with tens of millions of souls, mostly human, but with a handful of stranger beings tossed here and there, hidden within the shadows and in the undreamt parallels down lost alleyways.
Black Japan’s heroes are used to a tighter, closer world than their American counterparts. Tokyo, Osaka, Nagasaki and other great cities press in from all sides, never offering a minute’s peace, a second’s privacy. Black Japan’s homes are small spaces-tiny and personal domains carved out of the living flesh of the cities.
Black Houses is a free PDF detailing daily life in the Black Tokyo Campaign Setting.