Abyssal Lord of the Magi World

Once they were in the sky, the Rebirth Incarnation and the Cultivator immediately made their energy pools explode. It will not be a long battle since they were both ready to unleash their most powerful attacks from the beginning. 

Zatiel, Zitra, Totto, Tyrus, and Juntu saw a dark-purple and golden-red wave of Elemental Chaos fill the sky and clash. Immediately multicolored lightning and thunder manifested themselves.

The duo's energy only grew larger since they both released their Law Avatars and activated Doomsday Incarnation.

An eclipse fused itself with the Rebirth Incarnation's wings, and bone spikes covered by superheated golden plasma emerged from his elbows and knees. 

The Cultivator's Law Avatar fused with his black sword, making it unleash a destructive might that severed the space around it. 

Heinz's law comprehension had not regressed as his cultivation did. Although he could use One with the Law, his Soul Origin would allow him to maintain it less than a second before leaving him incapacitated.

Light bone armor appeared on Heinz's arms and legs as an immense amount of Astral Origin filled his body, increasing his overall physical abilities.

The resilience of this bone armor could not compare with the ones of Ezequiel's Doomsday Incarnation. Still, they had special pipes capable of ejecting massive amounts of energy to grant a tremendous drive. 

The Rebirth Incarnation focused on Heinz and analyzed all of his opening, weak points, and energy flow. He was about to unleash Soul Eradicator when the Cultivator's energy gathered in the bones pipes in his legs, and the next instant, he disappeared. 

A flash of superfast light moved around the incarnation, and its momentum only kept increasing.

A serious expression appeared on the Rebirth Incarnation's face as he attempted to capture Heinz's body with his sight. 

Soul Eradicator was instantaneous, but the incarnation needed to see the target, and even the Rebirth Eye was only catching the Cultivator's afterimages.

It took a moment for Zatiel to understand the secret behind his abominable speed. 

'He combines the might of his Superluminal True Doomsday Body with Void Disruption, folding space, and flashing through it simultaneously.'

The Rebirth Incarnation stopped searching for the Cultivator's body and adopted a battle stance with the white sword as the Mind Force gathered in his right eye.

All of a sudden, the Rebirth Incarnation turned around. He used the white sword to stop a red flash of light that almost cut his spine in two.

The Rebirth Incarnation's eyes widened the moment his sword clashed with that of the Cultivator's. He felt the bones of his arms trembling as a monstrous force that almost sent his body flying away struck him.

The Superluminal True Doomsday Body did not increase a Neo-Demon's physical strength directly. However, by pushing his speed to the limit, his attacks' momentum significantly boosted the striking force.

The instant the white sword blocked the attack, the bone pipes in Heinz's arms expelled a tremendous amount of energy, allowing the Cultivator to twist his body and sent an attack to the Rebirth Incarnation's neck.

Unfortunately for the Cultivator, a force struck his soul, making him feel like his head would explode. 

The Rebirth Incarnation's Soul Eradicator was powerful enough to neutralize a Peak Rank 4 life form. Still, the Cultivator's True Will and Killing Essence in his soul dimension improved his spirit defenses despite his True Soul being at the bottom of Rank 4.

The red sword slowed down, allowing the Rebirth Incarnation to use his arm to protect his neck before firing his knee to the Cultivator's chest.

Heinz's blade wings managed to cover his chest right before the attack landed. 

The Rebirth Incarnation sent the Cultivator's body flying away with that attack but did not chase after him. The reason manifested itself the next second, as the incarnation's left arm fell off. 

The incarnation's physical defense and durability could compare with that of a Demon Lord at the 1st Engraving Stage focused on body-refinement, and yet, the red sword cut his flesh and bones like if they were nothing.

Heinz's offensive might could compare with that of Zatiel when he just entered Rank 4!

Three were the reasons that allowed the Cultivator's strength to equal someone with a First Order Law Bloodline. 

Firstly, Heinz's Law Avatar focused solely on the sword and did not improve the rest of his body. Secondly, the increase in striking power of the Absolute Solar Yang was inferior to the Superluminal True Doomsday Body. Finally and most importantly, his Law of Killing already reached the Minor Completion level and formed Killing Essence. 

Zatiel was not surprised that Heinz could equal his offensive power, despite not having a Law Bloodline. After all, in his previous life, it was his law mastery that allowed him to reach the peak of the universe, not his trashy demonic bloodline. 

Of course, while Heinz's offensive endowment could equal that of Zatiel, they were miles away when it comes to defense. 

That single knee strike shattered Heinz's rib cage and left a gaping hole in his chest. The damage would have been much worse if not for his wings working as a shield.

Heinz's eyes narrowed as he felt danger and immediately flashed away from his current location. 

The Rebirth Incarnation had just purged the killing energy left in his wound when he prepared to fire another Soul Eradicator, but the Cultivator was faster.

The incarnation's eyes narrowed, and the golden plasma left his bone spikes and formed a miniature sun around him. The heat would be enough to wound and slow down the injured Cultivator.

However, to the Rebirth Incarnation's surprise, the red sword enlarged itself, allowing the Cultivator to attack him from outside the miniature sun's range.

The striking power diminished, but the speed was still the same as before.

The Rebirth Incarnation blocked the red sword, and before he could focus on Heinz to fire a Soul Eradicator, this one vanished and attacked from a different angle. 

The incarnation was doing its best to fight back, but the attacks were too fast, and with only one good arm, he could not always block the red sword. In less than ten seconds, hundreds of wounds appeared in his body. 

As another sword strike came his way, the Rebirth Incarnation's eyes glowed and made the miniature sun explode, generating a blast of superheated golden plasma that covered thousands of meters in an instant. 

The Cultivator was able to flash away just in time to save his body, but a flash of light that came along with the blast hindered his vision. 

Without warning, a Soul Eradicator managed to reach him and almost made him lose consciousness. Zatiel's mastery over the soul was higher than Heinz's, so he could not detect the Rebirth Incarnation using his consciousness.

The Cultivator did not lose focus. Letting his instincts guide him, he thrust his red sword to the left.

Heinz managed to block the white sword covered in blue and purple fire, but a kick still managed to land in his chest. 

That third strike destroyed his lungs and was almost enough to pierce his body. 

Just when he was about to be pushed away and lose control of his body, the bone pipes in his extremities fired one last blast of energy, allowing him to make a sharp U-turn. 

The Rebirth Incarnation was surprised and could not respond to the red sword in his neck.

Right before the incarnation's head was severed from his body, he fired a final and decisive Soul Eradicator.

Heinz's consciousness endured just enough to see the Rebirth Incarnation's head leaving his body.