Heavenly Emperor

Evolution

Demon World

Heavenly Slaughter Devil Sovereign stared at Nie Yuu with narrowed eyes as he felt that if he agreed, he would be caught in endless trouble. But he was interested in what method Nie Yuu would use to maintain his life. He is now on the verge of death.

Not long ago, the Heavenly Slaughter Devil Sovereign had consumed a dangerous flower petal that allowed him to sustain his life. But all the energy he absorbed was exhausted, originally to sustain his life. But used to fight.

Having just consumed the flower petals, the Heavenly Slaughter Devil Sovereign could not consume them anymore. Otherwise, he would definitely be killed in an instant as his soul would be eroded very quickly, or rather be instantly destroyed.

“How do you keep me alive?” Asked the Heavenly Slaughter Devil Sovereign who seemed to have almost lost the light of his life, only his spirit kept him alive.

“It's very simple.” Nie Yuu smirked then took out the Dark Demon Sword then continued, “It just so happens that my sword has no spirit. If your soul becomes the Dark Demon Sword Spirit, one day you will be resurrected.”

The Heavenly Slaughter Devil Sovereign's face darkened instantly because in his opinion, Nie Yuu told him to become his slave. That was what he knew about the Spirit of an Artifact.

“Bokah! No kidding! Do you want to trample on my pride?” Shouted the Heavenly Slaughter Devil Sovereign as loud as possible and in that instant, he spewed out a mouthful of blood.

“Oi oi oi.. old devil, I will not limit you. When you become this sword spirit, you can also fight. I have a method to make your soul into a solid form even though it is actually into an elemental soul form.” Nie Yuu said with a snort.

The Heavenly Slaughter Devil Sovereign who was still breathing rapidly instantly calmed down instantly. He thought for a while. He also forced his head to look in a certain direction and that's the direction where the flowers he consumed.

“Good boy! Do so. I will show you some things that will help my awakening in the future.” Heavenly Slaughter Devil Sovereign said as he thought of plans for the future.

“Oh?” Nie Yuu was a little surprised because the Heavenly Slaughter Devil Sovereign instantly agreed when he said he would not limit it.

Nie Yuu just nodded. From the very beginning, he was very interested in the Heavenly Slaughter Devil Sovereign's swordsmanship. By making it a spirit, it would definitely be stronger than the Blood Devils within the Bloody Mist Sword. This will make his strength increase drastically. Moreover, when the fight occurred, the Heavenly Slaughter Devil Sovereign could help him fight.

Since Nie Yuu and the Heavenly Slaughter Devil Sovereign had agreed, Nie Yuu directly channeled her spiritual power in her left hand and then wrapped the Dark Demon Sword with spiritual power as well.

“Pain resistant after this old devil. When you enter the core of the Dark Demon Sword, strike with the core. You must understand what I mean. With this powerful core, I only need to flow my Darkness qi and laws later into the sword core. This will make your body into the element of darkness itself.” said Nie Yuu.

“Wait first. I want to use all three laws I have. Otherwise, my combat power will drop drastically. I will deploy the Yin and Massacre laws to the Dark Demon Sword first, at the moment when I am about to die, drag my soul into the sword.” Heavenly Slaughter Devil Sovereign said.

Nie Yuu raised his eyebrows slightly because he never thought that the Dark Demon Sword would be able to be filled by any other power because the sword only acknowledged it. However, thinking back about the Heavenly Slaughter Devil Sovereign who was a high-tier swordsman, he immediately understood that the old demon must have a way.

At that instant, Nie Yuu directly stabbed the head of the Heavenly Slaughter Devil Sovereign using his left hand. But that did not make him bleed because what Nie Yuu was after was the soul of the Heavenly Slaughter Devil Sovereign.

While his soul was interested, the Heavenly Slaughter Devil Sovereign was greatly shocked because it turned out that Nie Yuu had an immortal soul that was said to be extremely difficult to achieve. He was currently increasingly admiring the strength of Nie Yuu aside from the power owner who would become the Dark God later.

The Heavenly Slaughter Devil Sovereign's body seemed to turn into ashes from performing the sacrifice of the Inner World. His soul was instantly drawn by the spiritual power wielded by Nie Yuu in the Dark Demon Sword.

Dungs!

When the soul of the Heavenly Slaughter Devil Sovereign entered the Dark Demon Sword, the sword was buzzing loudly as it was fusing.

Gazing at the Dark Demon Sword in his hand, Nie Yuu's eyes looked bright as he sensed that the Dark Demon Sword's level was increasing. At first, he only thought it had a slight development because the sword finally had a spirit.

However, what Nie Yuu saw at the moment made her very excited. This was due to the sacrifice of the Inner World possessed by the Heavenly Slaughter Devil Sovereign.

The Heavenly Slaughter Devil Sovereign had reached a terrifying height in the past. Of course his Inner World was extraordinary. Other than that, there was no rejection from the Dark Demon Sword at all. This was because the soul of the Heavenly Slaughter Devil Sovereign had also turned into a demon soul, and it was perfectly suited to the Dark Demon Sword that was originally created for use by demons.

Cracks! Cracks! Cracks!

Space seemed to crack around the Dark Demon Sword as the power of the sword increased continuously without stopping. From Nie Yuu's understanding of Artifacts, the Dark Tower was the strongest Heavenly Artifact he had ever seen. While the Dark Demon Sword was the highest Artifact Weapon he possessed.

And at this time, the Dark Demon Sword finally broke through the shackles and underwent evolution into a Heavenly Artifact.

“Is like this how to create a Heavenly Artifact? Wait, if so, didn't the God's Blood Sword belonging to the Blood Devil that was originally an Artifact Weapon have evolved into a Heavenly Artifact because he became that sword Spirit? Then, how about when the Blood Devil parted from that sword? Is the level still the same?” Inner Nie Yuu when thinking about the Blood Devil and the God's Blood Sword.

Nie Yuu sideways his thoughts on the Blood Devil and the God's Blood Sword. He looked towards the Dark Demon Sword which was currently continuously expanding. The increase in strength was also based on the two laws that became the new attributes of the Dark Demon Sword, namely the Yin and Slaughter laws.

Duars!

Space was torn apart instantly as the burst of laws spread out in all directions from the Dark Demon Sword. Nie Yuu was completely unaffected by that. He simply stared towards the sword with passion as finally the Dark Demon Sword which was the weapon he wanted to rely on to the peak had evolved into a sword-type Heavenly Artifact that was only one level below Dark Tower.