Is it necessary to fill in the name and address of the hotel where the applicant intends to stay in Japan or the names and addresses of relatives and friends?

The name and address of the hotel you have booked must be filled in, but you don't have to stay in the hotel you have filled in. You can check the hotels in the area you want to stay online and fill in the hotel name, address, contact number, etc. If the management doesn't check them.

In addition, the sponsors in Japan are not the inviting units, but in the name of individuals, such as the senior management of the inviting units. The guarantor is preferably a civil servant, a school professor and other people with status. It is better to write Japanese characters as much as possible when filling in.