Oak Immigration Services is a registered gyoseishoshi (administrative scrivener) practice near Meguro station working in English and Japanese. It publishes a complete fee list covering visa categories and incorporation, with government expenses itemised separately from the firm’s own charges — a level of detail most firms in this market do not put online.
The published list covers change of status, extension, permanent residence and naturalisation, and prices naturalisation for a business manager separately from an employee. Tax and accounting work is not mentioned on the site.