Well, the art looks good (I even like the 80's/90's manga style), the story could get interesting, even though it's kinda similar to "Gate: Jieitai Kanochi nite"... and I'm afraid this will turn out like the constant Japanese auto-fellation that we seems to get nowadays.
Look how great our culture is, don't mind the racism...
Look how fine OUR medical and military technologies are, even though most of it comes from Europe and the US.
Look how strong our military might is, even though we haven't been in a conflict since 1945, when we lost for good.
And who the fuck sends an aircraft carrier to open negotiations in a world where you don't have a secure way to get oil...
The only industry where Japan is self-sufficient is the agriculture (which is a good thing), so I wonder how they'll maintain their "supremacy" in this new world with no satellite, 30% of their normal energy, no gas or petroleum, no steel, no medicine in like 1 year, ...