Rent a car at Ishigaki this August

Hi everyone!
I'm planning to visit Ishigaki this august for 1 week.
Do you have suggestions for a good rent a car company?
My usual channels are not working for this small island...I suppose I need to look at local one.
Thank you!
Francesca

Times Rent a Car is one of the normal companies which are ok in Japan. From memory - there is one at the airport and I put in a random week in August and it had availability.

https://www.timescar-rental.com/en

As Ishigaki is not that big - I'd consider just hiring a car for the days you need it but that's just my personal opinion.

thank you so much for your kind reply.
I'll check your suggestion.
Do you think that august won't be so full that I can rent a car just the days I will need?
I was scared that august is very packed...