Do I need a visa to visit Japan? In principle, you are required to obtain a visa to enter Japan, however, you will be exempt if you are from the (68) countries and region listed here. A stay of up to 90 days for tourism, business, visiting friends or relatives, etc. that does not include remunerative activities is allowed under the "Short-term stay" visa. Further information can be found here.
What is "Certificate of Eligibility(COE)"? The “Certificate of Eligibility (COE)” shall be applied for through the Immigration Bureau in Japan for a stay during which the applicant performs remunerative work or a stay of over 90 days in Japan. The Immigration Bureau examines whether the applicant meets the requirements relating to the status of residence or not, and if they are met, issues a Certificate of Eligibility.
What is "Status of Residence"? The "Status of residence" is a qualification enabling you to carry out the activities stipulated in the Immigration Control and Refugee Recognition Act and to reside in Japan for the purpose of carrying out those particular activities. What is "Residence card"? The Certificate of Eligibility needs to be presented at the Embassy/Consulate Office of Japan for the visa application. Then, upon arrival into Japan and upon landing permission, a "Residence card" will be handed to a mid- long term resident (who stays longer than 3 months). A Residence card acts as a permit or a certificate to show the foreign national is legally staying in Japan with a permitted residential status and period of stay.
Can I extend the period of stay or change my status of residence in Japan? Yes, however, permission for change of status of residence and extension of period of stay shall be granted when there are reasonable grounds.