Grand Magus Zenonia was a well-known, notorious traitor who played a key role in the elves' invasion of the Magus Academy, along with a dozen of her followers, some of whom died under Emery's blade.
And right now, Emery was posing as one of them, supposedly an ally to the elves. Despite the fact he knew it was an extremely risky action that could potentially lead to his doom, Emery still decided to do it anyway hoping to get information from the group of dark elves.
Emery was surprised by the first bit of information he got from the dark elves. The latter claimed the deceased grand magus had her own Khaos space—one of the four special spaces—that she never shared with her followers.