Yes, I was on that mission. I thought I was a resident of Diagad for a while because of the illusion stuff, with a false life, a Diagad power, and everything.

I and a few others actually spoke to Chaos - the entity - during the mission, after we'd realized the truth. They showed us the destruction of the real Diagad when asked to, which was pretty bad. From what was shown, these strange shapes appeared in the sky out of nowhere and everything went dark as people panicked. That was followed by Chaos spending what I can only assume to be quite a while in the void after the destruction of the world.

[Not as much detail as she'd given those on the train, but she's trying not to reveal too much to these people. Masumi's pretty sure she's already said too much, and is trying to dial it back a bit now.]