It's all fire emblem: fortune's weave, playing as the queen Theodora on her quest to not go totally insane.
The beginning frame story is about an hour or so of heavy plot and tutorials, but once you choose your lord for part 1 the game gets immensely better. The game feels like fire emblem finally understanding how to make the grind between story missions feel like more of a challenge to get the gear and levels you need to win your fights. I'm only at chapter 7, but it's taken me twenty hours to get there. And I'm enjoying the hell out of it.