War!
Throughout the history of the blue star, this was one thing that had happened time and time again without failure
Be it because of a woman who seduced a king, or for lack of resources or even just out of wilfulness of the opposing party
But this is something that has always happened, allowing for humans on the blue star to take something's from it learn about it
And one of the most common things learnt about war, is that no matter the outcome there would be losses on both syses
Not only that but with war, there is no right or wrong as on my Victor is right
No matter what might have sparked the war. All the victors need to do is tweak history a little bit and then they are heroes for the end of time and the losses demons wanting to destroy the world
And as a human of the blue star, Mu Fan more than anyone already knew about this