Within world parallel from ours, lies a planet named Maryd. Within that planet, there are forces that lie at work beyond human comprehension (at least, to the humans that live on Earth).  

Many Maryd historians believed that there was once an era of peace that existed, one where there was little to no chaos. All the species that resided on that planet treated others with respect. Animals and Humans (along with other creatures) co-existed in harmony. Everyone relied on each other for something, no matter how insignificant it was.  

Unfortunately, this peace did not exist for long. A corrupt archangel named Sariel convinced the wicked Udugs (lowly demons of disease, greed, and other mortal sins) to come up to the surface of Maryd and wreak havoc upon the beings that lived on Maryd. Once Sariel opened the gates of hell, the peaceful lives of citizens Maryd were shattered. Volcanoes, once believed to be dormant, suddenly erupted, spewing ash into the sky. Many ecosystems and islands were covered in lava and destroyed. Maryd Historians call this day the great cataclysm. 

After the day of the great cataclysm, fantasy type demons emerged from the gates of hell and roamed the surface of Maryd. Beyond contrary belief (of delusional people), no race was at the top of the food chain, the Udugs are. Before they had known it, all the inferior races started to get picked off, one by one. The weak races without power... Humans, Dwarves, Elves, Beast-men, and Lizardmen alike, were all on the verge of becoming extinct. The Udugs were carriers of mortal sins, so they corrupted many species that had gotten too close. (Humans, unfortunately, fell victim to the Udugs the most.) The normal and peaceful life those races yearned for was shattered. Defense became a crucial part of their lives. Many beings (humans especially) pleaded for power. No matter how much the inferior races pleaded to the gods above, the gods never listened.  

This went on for four generations until five gods had finally heard their cries and acknowledged them. The gods of Earth, Nature, Water, Wind, and Fire granted the five races' abilities to use 1/1,000,000,000,000 of their full powers.  

These five gods who granted the inferior races power: 

♦ Terraneus, the god of brösinger [earth]. 

♦ Toetyra, the goddess of ishedya [nature]. 

♦ Aquafeyra, the goddess of suia [water]. 

♦ Gaothe, the god of ventiro [wind]. 

♦ Ikyranoes, the god of fruocio [fire]. 

These races called these powers 'magic'; those wielders were called 'magicians'. Certain races were gifted with natural affinities with one of those five elements (such as elves and lizardmen), making using any other element harder to master. Humans, Beast-men, and Dwarves were granted with an exception, those who were born into that race were given the abilities to naturally use all 5 elements. The first generation of magicians were all branded with insignias just above their bosoms (bellow their collarbones). Once the fierce battles were fought, this first generation of magicians worked together to push back the foul beasts (into certain territories of their own) and seal away most of the Udugs from the mortal world.  

Afterwards, a newfound "peace" was brought back to Maryd but will not go back to the peaceful lives the citizens on the planet had used to know. The citizens will invent their adventuring system after the cataclysm and formed adventurer guilds to protect the citizens from the Udugs.