Ok, I just finished watching the entire series and... I'm at a loss. I can't understand what the war is all about. Can you guys help me, please?
Spoiler for 3rd series plot:
Let's see: Yuji goes missing, and is later discovered to have merged with the Snake of the Festival. His plan is to make a new world for the Tomogara so that Flame Hazes, Shana in particular, wouldn't need to burn themselves by fighting. For some reason I didn't get, Flame Hazes want to stop him. Why would they want that? Isn't it for the best if Tomogara leave this world?
Anyway, the Snake finally manages to create his Xanadu. Shana hacks it by putting a rule that says eating humans is forbidden. Why? There will be humans in Xanadu too?
So the Tomogara leave, and suddenly the Flame Hazes go 'Oh, I guess it wasn't that bad after all.' and they decide to go to Xanadu too. I mean, really? What was that whole damn war for, then?! Isn't their goal the exact same? Shouldn't they have cooperated in creating the new world? And what was that proclamation from the goddess in mid-fight? Why does it sound like Tomogara and Flames will be fighting in the new world too?
In the end, Yuji battles Shana for... uh... no reason? He wants to be with her, she wants to be with him, yet they end up fighting each other. What for?
Seriously, I feel like I'm missing a large part of the plot, because as of now it makes no sense whatsoever, and I only have confusion in my head. If someone could be so kind as to enlighten me, please do.