The world has existed as it is for a long time ever since The Two fought and in their fighting the opened all the world's dimensions and fused them into one since then the world has fought countless world's and mostly on one continent this continent is known as Elregea a School of mercenaries formed and it grew from just that into one where anyone wishing to master their skills of combat could go you but it also trains you for real life situations by sending you out on missions after ten years the best students have the option of going out to the dark continents dangerous places that most never survive the journey out to the dark continents especially as the races that live on them  are particularly  dangerous