I had though over this question for quite sumetime before it's mention.
Honestly, i think Amuro Namie donate is because she always been dofin' charity all the time ever since her moma die. I guess that also because she started to realize how it feel to be sumeone without parents and money. As she been through there.
I think Hamasaki Ayumi had done sumefin' behinde the close door that nobodys really know.
So why listenin' to Hong Kong's Media rubbish again. The reason why i said Hamasaki Ayumi does because of wot she had done for 119. So i dun't see it why she'll nut do it for this time.
Even if she didn't i can still understand because it's the sins that human had done...