Interesting Question Regarding Voidsent.....

[Cleretic]

That's a lot of text to avoid saying it's your headcanon.

It's a lot of text saying 'I jumped the gun and I apologize, but here's all the evidence that got me there'. Whatever their plan was for the Thirteenth, all evidence suggests Zodiark was a part of it.

It's always important to question your preconceived notions; the things that you internally take as a given, but have perhaps forgotten why you landed on that. Oftentimes it ends in things like this, where there's a few possible readings but it was never resolved and is no longer relevant, so you accidentally go from 'I think it's like this' to 'I'm sure it's like this'. Thanks, Jemachu; asking for evidence when it isn't clear is always important.