s it wrong that I ship Master and Lanoste in a short of friendly yet not so friendly relationship? Master seemed to know him well after all, through I can't really tell what Lanoste is thinking...
That aside, I have a theory concerning that woman's role in the past. We all know that when a king opened the doors to the demon world, they wrecked havoc and destruction, but then a 'certain king' pleaded to the demon king for the power to drive them away, which he complied by giving them the power of a magician. Now here's the question, if the demon king who answered the human king's plea is the same guy we have today...why the hell did he do it?
I mean, think about it, why would he give the humans, his enemies, the power to destroy and drive off the demons, his allies? And don't say that the demon king didn't want this in the first place! He certainly didn't seem to have cared whether or not the human race would be annihilated before that king showed up! So why the change of heart?
My theory is that it's because of that woman, the king's relative/sister/whatever
I mean, just look at them! You could tell that the Yong wanted them to look like distant lovers! My guess is that the demon king met and befriended her, only for something to happen to her that's related to the demons (giving his enemies the power to fight off his allies seemed a bit too drastic of a measure if he hadn't lost her to them really) This could be why he heeded the plea of that certain king in the first place, and perhaps why the king was kneeling as well. In the new version of the prologue, the way the king is kneeling looks like someone who's at the end of his ropes.
So basically, i believe in the tragic romance theory! All hail cliche!
...That aside, how the hell does Meredith fit in on all that? Perhaps he's (Or he was, still firm on the belief that he has the chained demon's soul a bit) the king who opened the door to the demon world? ...No, too big of a stretch... But it makes you wonder how the king who opened the demon world knew about the door. Maybe the Demon King would travel between the worlds time after time. I mean, he has to look human for a reason after all...