Here is my original thread, but after a number of unsuccessful attempts from there I have come to this forum hoping to find a solution with the Rising Sun enthusiasts. As you can see, one person did manage to get one of the pen cases, but hasn't responded on the topic or to my PM asking where (s)he found the elusive case Anyone here? I understand that if I do find it shipping may well be more than the pen case, but at this point I probably will accept that.

TIA

You might have the best chance with one of the Japanese reshipping companies. I've only tried one of these so far, japantodoor.com, but it was a good experience, overall. The downside is that you have to pay their fees in addition to what it would cost to order items directly within Japan.