Cuarteto Office is a gyoseishoshi (administrative lawyer) practice that publishes a starting figure for the Investor / Business Manager visa and works in Spanish as well as English and Japanese — an unusual combination in this market.
The firm states that applicants do not need to appear at a regional immigration bureau, which matters for founders coordinating an application from outside Japan. Its published price excludes third-party costs such as tax accountant fees and registration and licence taxes, so it is not directly comparable with the all-in packages quoted by some other firms.