Haha, there are rumours he's had plastic surgery. It's possible ethnicity has to do with how old/young someone looks BUT he's been around publicly for almost a decade and a half which totally baffles me every time he comes up. I think it's in the culture you're brought up that you can pinpoint ages very well--for the life of me I cannot give an accurate age for causasians/latin americans/african americanscbut I'm sure they have no problem between themselves.
Which is why Gackt confuses me a lot. @_@;;
I guess we'll wait another ten years and see if anything changes then. If it doesn't, he either made a contract with the devil or he's got genetics of a god.