I had always suspected that we would see someone who is behind the Five Elders because it's always a trope we found in most stories. Too me I always find it hard that 5 different man controlling the Government with no central figure to make the final decisions. When we learned about the 20 kingdoms bending together and these kings moved to Mary Goeis to become the Celestial Dragons, I always wondered about the Five Elders' original and why only 5 and
not 19 different man ruling the Government. Then this arc clears things up, the Five Elders are the highest ranking Celestial Dragons and this chapter reveals the top boss of the entire government and this actually makes sense. The Five Elders are council/vizers while Im is the ruler hiding behind the shadows.
Someone however pointed out that there has to be someone to gather 20 kingdoms to fight the ancient kingdom and it's highly likely Im is descendant from that person, that person being the king of Mary Goeis.
This whole scenario is building up to look like the storyline from FFX where 1000 years ago, 2 great cities fought each other, causing the rise of Sin while here, Mary Goeis fought against the Great Kingdom with the help of 20 kings and won.
Oh, and due to the dialogues from the Five Elders; another Void Century is threaten to happen again or it may be extended