Three million light years away from the Earth was a galaxy called Duran. It once housed flourishing planets like ours. Dozens of great planets with populations far exceeding that of the Milky Way. Their technology far exceeded ours as well. But every great civilization must fall sometime. And this one fell in a mess of explosions, supposedly from the suns. It was considered a natural event of course, yet not one that had been predicted. The population was taken totally by surprise and only a small handful managed to escape the galaxy. Part of the ruling family and their closest friends actually.

Now, back to Earth. Its Tokyo only a few months after the destruction of Galaxia. Everything seems to be getting back to normal at last. School is starting up again, life goes on as always. But there is danger lurking closer than anyone realizes. For the remnant of the Kingdom of Duran is coming closer everyday. And they've got their sights set on the Earth as a place to renew their dynasty.