Originally, the book only covered the greater southern California area and also contained residential listings, but eventually did away with them, and in the 1998 edition, was expanded to include Las Vegas.
Currently it no longer contains residential listings; however the area has been expanded to San Diego.
The Southern California business directory is divided into 600 categories with more than 1,200 advertisers and 18,000 listings.
It is available with no charge at over 1,200 locations such as Japanese markets, bookstores, restaurants, hotels and schools throughout Los Angeles, Orange County, San Diego, and Las Vegas.
In addition to its various listings for businesses and other various organizations, the book contains maps and area guide of Little Tokyo and sometimes other Asian American communities as well as information for Japanese speakers living in the U.S. such as long-distance rates, maps of the U.S., sample driving tests, and other information for residing in the U.S. that is not commonly printed in Japanese.