Hey there!
FACT is... you don't need a local person to create your product listing. Yes, Amazon Japan is different from Amazon US, but as a Product Description Specialist, I use software that is able to determine the best possible keywords for your listing, for any geographic location (US, JP, CAN, SP, EU, etc).
I not only provide TITLES and BULLET POINTS that will help provide your listing with increased online visibility, but I offer high conversion product descriptions as well, along with product reviews (if that is something you would like to do).
Contact me, and let's see if we can work together.
Best,
Craig