You get to pick the house - Black Eagles (Edelgard), Blue Lions (Dimitri), or Golden Deer (Claude). However on Black Eagles:
spoiler
There's a fork that you default to fighting against Edelgard unless you make some choices to specifically fight on her side. It's not too hard to miss, but if you don't pay attention at a few key points you could mess up your run!
You get to pick the house - Black Eagles (Edelgard), Blue Lions (Dimitri), or Golden Deer (Claude). However on Black Eagles:
spoiler
There's a fork that you default to fighting against Edelgard unless you make some choices to specifically fight on her side. It's not too hard to miss, but if you don't pay attention at a few key points you could mess up your run!