Emphasis on the "technically" part.
Boss in the sense of "takes longer to defeat", perhaps.
Of course, this is all just the "official" story. As Eloy implied, the emperor is "not meant" to have any true legal authority, but he basically has all of it, and basically everyone already knows it. But for the sake of putting up pretenses so that they have some deniability in regards to the other nations so that they won't target the emperor... well...
Very, very interesting.
No, I'm pretty sure that's the manner in which the royal guards most AREN'T Veda's boss. She's got big final boss energy. Even had her own abstract background that one time.
Feels almost like Noah's being groomed to join the royal guard down the line.