i am pretty sure that japan will have enough money on their own to pay for their rebuilding.

This is Japan, not china. Having 17 trillion and still ask the -17 trillion country to donate money for rebuilding. Lucky, samurai isn't from China.

Japan is the real place for samurai. Think of their pride, they would have their ministry commit seppuku if they accept your money especially Americans who blew up half of their country a little more then half a century ago to rebuild.

Now if you donate directly to Red cross, that's another story since the money is use to keep red cross function not rebuilding.