Ayana-
My world's split in four. It's been like this for as long as anyone can remember. The White Palace, The Demon Castle, The Outsiders, and us the Warriors. We live in Warrior Palace, where we fight and learn how to kill demons while getting a normal education and living like a normal community.
Our four parts never see each other unless necessary. Then the representative of each colony goes to meet the other discuss whatever they need. I believe it's just a meeting where they express how much they don't like each other. Most of the Outsiders are oblivious to the other species but some who are extreme secrecy. It's mostly only the main council of the Outsiders who know.
My part of the world was created by the Goddess of War, she set this all up years ago and never cam back since. They say she left and what she built started falling apart, nor enough people were there to recreate and "renovate". So the Goddess of Love swooped in and instead letting the rest of the people find love the normal way.
She did a spell that said each person had only one true love in the world. That that one Match was their one only and no else could have them. That we couldn't fall in love with anyone but are Match. There were other rules too. That if you didn't find your match by 18 you were deemed a loner. That there was no one world for you. I know harsh right.
The Warriors were made for a reason. Born to protect people and creatures who needed it. It made us the best fighters in the universe. Though we have to prove ourselves to everyone first. In our senior year a group of us get a mission and if each person passes a you'll be a true Warrior by heart. If you fail you'll be deemed a Outsider and never seen again.