There are three common document routes
You may drive with a Japanese licence, an eligible International Driving Permit under the 1949 Geneva Convention, or—only for specified countries and regions—your foreign licence plus an authorised Japanese translation.
Rules depend on issuing country, document format, validity and your date of entry into Japan. Check the National Police Agency before booking.
Bring the originals to the counter
Screenshots and photocopies are not substitutes for required originals. The booking name and renter must match, and additional drivers should bring their own valid documents.
Store language rules still apply
Nico Nico Iiyama requires the renter to personally complete the procedure in Japanese. An interpreter or translation app cannot be used to complete the contract. Other providers may have different rules.