In a world where monsters and sub species exist, exists great power

There is soemthing inside this world named the 4 Great Heroes

The magic hero the sword hero and the priest hero, and the fourth the archer hero

Author:I cant really think more tho pls read

At the beginning every milinnea there would appear a demon king and heroes after 13 millennia the 7th millennia heroes were the most understanding

In the world the year 1413 a new demon king appears and in this world there are heroes that live on in this world because a new demon king appears there are new 4 heroes but! It's actually 6 because the two heroes from the 7th millennia still exists the magic hero and the sword god,the magic hero able to live because of his lineage an elf of course! And the sword god currently UNKNOWN!.