To obtain a tourist visa for Japan, applicants must provide: 1) A valid passport expiring at least 3 months after the visa expiration date, a completed visa application form, and two recent passport photos. 2) Proof of the purpose and duration of stay such as an itinerary, flight reservations, and hotel reservations. 3) Proof of sufficient funds like bank statements, tax returns, and pay slips from the past 6 months. 4) Additional documents may be required depending on the applicant's situation, such as an invitation letter, consent forms, or authority letters.