Oh, whoops, sorry. And that works perfectly, I think! The movie's plot is basically "Geass has gone a bit haywire and someone is trying to use it in new and power-grabbing ways but they fail and now Geass fragments are raining from the sky and imbuing people with Geass powers." So I think the two worlds could blend really well together w/Cornelia and Even dealing with the one-two punch of the demonic bloodline popping up unexpectedly as a consequence of something that happened during the war + someone trying to take advantage of the chaos to make a pact with Asmodeus.

We can easily set this post-war and say that there's a gaggle of grumpy former nobles who are mad that they don't get to be nobles anymore and bitter that the surviving royal family members have aligned themselves, and therefore Britannia, with an organisation sort of akin to the UN but with significantly more power and influence. That'll give us a nice bounty of motivations to play around with when the time comes because "why would they want to leak your identity?" is a question with so many potential answers that they'll really have to work to figure it out.

And yeah, we can totally work out the details as we go!

Are you planning to top level or do you wanna do a separate post again? Either way, I'm cool with writing the starter.