Hah, wow. I got to love how that Celtic tattoo looks like it's combined with a tribal tattoo border.
Two stereotypical white guy tattoos in one.
Still, the Ares one is pretty awesome.
Also, I'd advise against getting a sleeve tattoo in Japan. Usually, the only ones that are tattooed are Yakuza and criminals.
Then again, you're going to be a US Marine gaijin in Japan, so you'll stand out a whole lot anyway.
Perhaps you could get one before you go back to the US or something?
I mean, if you want something that gorgeous, go for it.