Over the course of the Kiseki series, one mystery that many people have attempted to solve – and what might well be the most important puzzle in the entire series – is the question of who the Grandmaster of Ouroboros really is. Based on the various clues scattered throughout the lore, I have my own take on who this enigmatic figure might be.

The two most common theories seem to be that it’s either 1) Ein Selnate, the leader of the Gralsritter, or 2) The Goddess Aidios herself. Both of these theories have some compelling evidence in favour of them, but I currently don’t believe either option. Maybe I just like coming up with answers that are a little more ‘out there’, but I have my own theory about the Grandmaster’s identity.

First, let’s quickly go over what we do know about the Grandmaster.

Some Clues:

• She is a woman.
• She likely has some ability to see into the future, judging from Weissmann’s statement about her ‘prophecy’ and her own admission that she predicted Weissmann’s actions.
• She is surprisingly compassionate toward her followers, who in return are almost reverent in her presence, even members like Novartis and Campanella.
• She has access to tons of knowledge that almost no one in the world knows, including top-secret information on the Sept-Terrions.

With this information, as well as some other connections, I would suggest there is another candidate for the Grandmaster’s identity:

It’s the Mirage Sept-Terrion, Demiourgos – the original one, not the replica created by the Crois Family.

But wait, you might think. Didn’t she die hundreds of years ago? Well, we’ll get to that in a second, but first, I’ll break down some of the reasons for my theory.

Evidence:

Obviously, Demiourgos is female, just like the Grandmaster. On a side note, I think it’s curious that she’s the only Sept-Terrion so far to have a gender, though that could just be because she was the most ‘human’ of the seven.

Demiourgos had/has the power to control causality, meaning she can forsee everything that can or will happen in the world. This lines up with the Grandmaster’s supposed ability to see into the future.

According to legend, Demiourgos cared deeply about humanity, which is why she ultimately chose to end her own existence when she foresaw that her guidance would be misused by them. This also matches with the Grandmaster’s compassionate treatment of her followers. Her claiming responsibility for the destruction caused by her plans is also accurate to how Demiourgos believed she would be responsible for any problems that would come about as a result of humanity abusing her guidance.

If the Grandmaster is Demiourgos, that would mean while she wouldn’t be the Goddess herself, she would be close enough that it makes sense for the Anguis to act so reverential toward her. Even the members of Ouroboros seem to be deeply religious.

Assuming that Ouroboros’ ultimate goal really is to collect all seven Sept-Terrions (which isn’t as certain as it once was), it would make sense for the Grandmaster herself to be a living Sept – and not just any Sept, but the one who was capable of communicating directly with the other six. That would explain how she knows so much about the Septs’ locations, especially the long-lost Space Sept-Terrion, Aureole.

So how about the original Demiourgos having erased herself all those years ago, huh? Well, at the end of Ao No Kiseki, we saw Lloyd save KeA – the replica Demiourgos – after she tried to follow in her predecessor’s footsteps and erase her own existence. Therefore, I believe it’s possible the original one didn’t vanish completely, either. Instead, perhaps her essence somehow remained while her physical body vanished, or she simply banished herself to another plane of existence. Sept-Terrions hiding away in another dimension is nothing new, after all.

And one more thing – the Grandmaster’s ultimate goal is something called the ‘Orpheus Plan’. I have my own idea of what this mysterious plan is, but right now, the important part is the name – Orpheus, the story of the Greek hero who tried to bring his loved one back from the dead.

That sounds familiar, doesn’t it? Where in this series have we heard about people trying to resurrect someone they valued greatly? That’s right, the Crois Family trying to bring back the Demiourgos. Could Ouroboros’ Orpheus Plan somehow involve Demiourgos – the original one – trying to bring herself back into the world, in a new physical body?

As for why she would do this after she tried to kill herself all those years ago…perhaps she foresaw that humanity would once again need her guidance in order to survive. Remember that according to Vita, the Orpheus Plan’s objective is to “guide the souls of all.”

Final note: I don’t know how Divergent Laws would fit into this theory, partly because of how little we know about them. Though it could be explained by the Demiourgos just being that powerful.

Anyway, with some key members of the Crossbell cast, including KeA and Mariabell Crois, set to return in Sen 4, and hints about the Grandmaster being promised, we could very well get more evidence in support of this theory, and soon.