xD I bet France gets all serious around Prussia all the time and is like: "So, what is your intentions with my son?" And Prussia is nervously sweating like "OMFG FRANCE WE ARE SUPPOSED TO BE FRIENDS THIS IS TOTALLY NOT AWESOME"
I feel like Romano would do this to Spain and he'd act all mad telling Spain to fix things cuz they're crooked even though they're all fine and Spain keeps trying to fix everything until he catches Roma staring and then starts purposely pushing his ass out towards him
HEADCANON: During the apocalypse, the titans attacked and Ludwig lost his memory again. But since Prussia wasn't there with him to remind him that he was a country, he assumed he was human. He took on the name of Erwin Smith, and swore to kill all the titans around the world. Levi is really Japan , trying to get Germany to remember his past. That's why neither of them seem to care for humans, and why they will have to watch their friends die around them, wondering why it feels so familiar.