Now why does anyone want to murder Caroline Kennedy?
Seriously, why?
If you don’t get it, think about it. It’s a thinker.
Every person down to elementary kids in Japan--much like across much of Latin America--know "Kenedei" and it will go down very well.
At least the Japanese mainstream media will make sure that it is entirely palatable to the diplomatic corps here, the Japanese Goverment, the Imperial Household and the man in the street. This is separate from anything about CK being a good Ambasssador or not, but it will be seen as entirely welcome and they will be flattered. They are too far removed from the realities of American Political System and the Kennedy "name" (brand) still holds a great sway here. So WE may not like it, but by and large she will be accepted as a rock star and they will be flattered. And their news media will tell them to think this way.