This is the Medieval era, you can use magic if you want and set your own rules and wars between kingdoms and characters, whether they are OCs or canon characters, they can be anything, fairies, elves, humans, giants, mermaids, whatever you want. And you can choose if they are princes or princesses, kings or queens, well let's start

[At the moment all the characters will be 7-10 years old]

Medieval year, in a kingdom not too far away