Almost all of the events for the coronation were prepared by both Flunra and Evelyn.
In the new era, there was hardly any resemblance to this kind of day.
Since there were no rulers that could be considered as unique, as him—deciding to umbrella, both Supernaturals and Humans—not a single standard existed for him. Because of that fact, they were free to add any necessities that should be made to mark Rex's coronation—as the new standard in this era.
However, at the beginning ceremony of his coronation, Rex made a personal request.
Currently, there were no empires that existed in this continent.
Now that he was going to establish one, its establishments must be backed by something.
Rex made a decision to create a trademark that was also a declaration to all.