I can't decide whether you're a masochist or brave for putting yourself through all of this. I'm a wuss and I recruit everyone. (Except Ferdie and Petra when I play the Blue Lions because fuck you, anti-Edelgard fandumb. And even then I hate killing poor Ferdie and go out of my way to keep Petra alive...though that's also because she's a pain in the ass to fight!)

I've gotten the cutscene just by completing the paralogue.