From the introduction:
Welcome to Tortus, jumper! A world of magic, monster, gods and more. Right now, this world is ruled by 3 major races. The humans reside and rule the northern half of the continent, while the demons reside and rule the southern half. The beastmen reside in the far east in a massive forest known as the Sea of Trees. These races are at war, with both humans and demons being able to cast magic and considering that as a gift from their respective Gods. While Demons are stronger individually, Humanity has the advantage of numbers. Meanwhile demihumans don’t possess magic and are constantly enslaved outside their country. Lately, the balance has been broken as Demons have become capable of controlling magical beasts, rendering humanity’s advantage useless.