I think what Sturm is getting at is that
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Hector is trying to produce Grim Angels, so Ragnarok may already have occurred.
I don't know if there's proof of that, but
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there does seem to have been a Hades/Chaos Gate opened in Aventheim, like we saw in plot!Chapter 8 of Riviera
...the Wisp is the most dreadfully obvious part of the whole Kitten affair. Not that I'm complaining, but it's just obvious. D: