I made a game last christmas that is about a mice spirit pretending to be santa for the parents of her home town.
It is a pretty short game but I do think it turned out pretty well.
And it is for sure not the usual fire emblem experience, it also has no permadeath with it being very “all hands on deck” both in the gameplay and in story. If they can’t die or be benched, they can have as much role in the story without it feeling strange.