This story begins just before the birth of the Demon King.
Deep underground, in a vault covered in flames, the Demon King stirs inside a hard, egg-like stone. He is inside this cocoon, and it is only a matter of time before he breaks out.
"The Heavens" say, "The beginning of this catastrophe is near."
They send Female Rover down to Earth to train a hero who will stand against the Demon King. She searches the entire world, and finally, in a small village, she senses a heavy aura radiating from a small, light-brown-haired boy — Alpay. And not only is it heavy, it is an incredibly dark aura.
Female Rover begins to train him, but she has her doubts. The darkness inside him makes her question whether he is truly the right person.
After years of training and journeying together, the Heavens warn Female Rover: "You have chosen the wrong person. Give up. Find the right one and train him."
Rover constantly and confidently defies them.
After 3 years, Alpay has become someone immensely strong and blindingly fast. He has reached a power almost equal to Rover's.
But then, Alpay suddenly loses himself and in an instant, kills 8 men in one second.
Rover is filled with regret. She draws her sword, attacks Alpay from behind, and stabs him in the back.
Alpay falls to the ground and dies as his eyes close.
When Alpay opens his eyes again, there are broken, hard shells around him and he is lying on the ground. When he wakes up in a dark chamber, he is surrounded by demons. They are bowing before him, kneeling with respect.
A second life and an unbelievable power. Now, there are no more chains holding him back.