This document provides an overview of establishing and expanding a business in Japan. It discusses why Japan is an attractive market, particularly now given trends like deregulation and the 2020 Olympics. It examines whether to locate in Tokyo or locally. Entity choices include representative offices, branches, and corporations. Legal issues covered include co-founders, employees, stock options, visas, financing, and regulations. A hypothetical scenario outlines initial steps like obtaining a startup visa and using the Tokyo One-Stop Business Center before establishing a corporation and applying for a business manager visa.