All the Japanese dealers I have dealt with have been very easy to deal with and had no issues at all, at least 30 different dealers over the years from eBay and Rakuten Global.
The only problem I've ever had with a Japanese seller was with an eBay user named Koji-Koji. Similar MO-- blaming EMS for damage.
Someone started a WUS thread on him a few years back:
https://forums.watchuseek.com/f2/curious-case-koji-koji-ebay-watch-scammer-part-i-2296314.html
Maybe he's back!
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