Knowing the area of Japan your car was used in is important.
Some areas of Japan are best avoided when it comes to buying cars due to rust issues (snowy areas such as Hokkaido) and possible radiation contamination (Fukushima).
So how to tell which area of Japan your car came from ?
The likely usage area of for a Japanese vehicle can be determined based on past auction records as well as official registration inspection locations from Japanese Transport Authority (MLIT) records.
If a car was re-registered at the same location several times from new and then auctioned in that same Japanese prefecture prior to export, there is a good chance it had only one Japanese owner.
If however it was re-registered in locations quite distant from one another, this evidence is more likely to indicate multiple owners.