In a world doomed by a never-ending war between the races that inhabit it, there has always been someone to rise from the masses and lay the foundation to a small period of peace, that person being the hero. The hero is portrayed as a selfless person that fights for the greater good of humanity, a light meant to shine in the darkness caused by the demons.
On the other side, as a being that represents the total opposite of the hero, there is the Demon King, ruler of Yafrenia, and the worst enemy of humankind. Being portrayed as a ruthless monster with only destruction on it's mind is how the rulers of Yafrenia have been perceived for generations.
Among the generations the fight between the two sides has decided the balance of power in the world countless times with light coming out on top during the last war.
The demon king Zagan, had been killed and the hero gained near limitless power with peace being restored forever now, or is it...
After the death of Zagan, his son took the crown as demon king and swore revenge for his father and his kingdom with the people of Yafrenia now revering him, a man named Seiji and called Draco, demon king with dragon blood, the youngest person to take the crown, at only age 9.
Ten years later, the new demon king finds himself in a little bit of a problem... being stranded in a place called "The forest of death" after a magic experiment gone wrong.