The hieroglyphs likely told the story of when the floor became one! But why? Why did the floors merge? Ed tried his best to come up with a potential reason but came up empty.
Was there really a need to merge the floors? Did it help improve security or something? Ed couldn't come up with an answer. At least not with his current knowledge.
'Now that I think about it… the monster encyclopedia might have something' Ed had considered reading it before but he had put it on the back of his mind eventually forgetting about it in its entirety.
He had neglected that although the encyclopedia likely mostly spoke of monsters, their anatomy, skills, weaknesses, etc. It was also bound to hold some information about their habitats. Could a dungeon be considered a habitat? Well, not really.