Abyssal Lord of the Magi World

Zatiel's bone sword and the King in Yellow's staff began to clash at superluminal speed as the power of life and corruption blasted off the duo's weapons.

The staff managed to pierce the Neo-Demon's defenses, and just as it was about to crush his head, Zatiel twisted his body, dodging the blow in the last instant before piercing with his bone sword from an impossible angle.

The King in Yellow showed his superb martial skills, evading the sword in the last instant before counterattacking. 

Those physical strikes were only the melee part of their attacks, as both displayed immense control over the natural forces and laws, conjuring special weapons from nowhere that attacked from every possible direction.

Roku could not hide the shock and admiration he felt seeing the duo's martial abilities. He considered his bodily control superb, but only seeing how Zatiel and the King in Yellow used their bodies did he understand how far he was from the peak.

The Astral Fiend did not dare to lose even a millisecond of their fight, making sure to engrave every move in his mind. 

However, as Roku focused on the duo, something odd happened. For some reason, he kept seeing an illusion above them.

In it, the Astral Fiend did not see two individuals displaying martial abilities that defied logic, but instead two men calmly playing a game of go.

That illusion resulted from the duo's Mind Force, affecting the surroundings and making people see how the fighters experience this battle in their inner selves. 

Not like a high-speed melee fight with apocalyptic weapons emerging from nothing, but as a cold, calculated board game.

Zatiel and the King in Yellow did not break their eye contact this entire time, and while they spoke not a single word, the truth was that each second was like an extensive and meaningful conversation. 

The bone sword and the staff clashed once again, and despite the Neo-Demon using the full power of the Absolute Solar Yang True Doomsday Body and both of his arms being on the weapon, the King in Yellow was able to push it away with his immense strength. 

Unfortunately for the Neo-Demon Ancestor, while their martial skill and the nature of their powers were at the same level, the King in Yellow was faster, stronger, and his reflexes and speed of thought were higher. 

That difference did not come from their talent but because the King in Yellow was a Peak Rank 6 life form, while the Neo-Demon Ancestor was at the Early Rank 6.

Seeing the staff coming crashing down toward his chest, with enough force to break a massive star, Zatiel pushed himself to the limit and managed to block it at the last second with his wings. 

The Neo-Demon's wings were even mightier than an Archangel's, with an endurance superior to most Rank 6 Artifacts, but the staff broke them with ease.

And the worst part was the eldritch aura that infected the wings, making even someone with a Life Origin Essence incapable of healing them during battle. 

Zatiel's face showed nothing despite the pain he felt. Taking advantage of the King in Yellow's right arm being in an attack stance and the tentacle arm no longer present, he attacked at full speed, leaving another deep cut on his opponent's left ribs. 

The King in Yellow glanced at the new wound on his body, but his eyes displayed complete indifference. He retired his staff from the wings a few millimeters before attacking with ferocity toward his left.

Zatiel managed to move his neck just in time, but his eyes widened when he saw how the staff made a sharp turn and connected in his left shoulder, completely shattering it.

The Neo-Demon's muscles and bones reinforced by yang runes and the Tree of Massacre's armor were like paper in front of the staff's might. A mass of mangled flesh infected by eldritch aura was the only thing connecting the Neo-Demon's chest with his left arm. 

There was no happiness or excitement on the King in Yellow as he saw that devastating blow land, and he continued with his onslaught.

Before, Zatiel could barely match the King in Yellow's strength, but now that he could only use his right arm to grab the bone sword, things became much more dangerous.

The Neo-Demon Ancestor pushed his abilities to the peak as he responded against the King in Yellow's staff. Now he could only defend, as counterattacking was impossible. 

It did not take long for another staff blow to land on Zatiel's body, this time on his chest, shattering his left ribs and collapsing his lung. 

As the staff came for his head, Zatiel's Rebirth Eye burst with energy and fired an immense amount of Mind Force in the form of an invisible soul invasion spell. 

The Soul Annihilator that Zatiel charged for hours struck the King in Yellow point-blank, completely disregarding his physical defenses and piercing toward the soul dimension.

That soul invasion spell could have easily broken a Peak Rank 6 Inner Law Dimension, or at least filled it with cracks, but Zatiel perceived how a membrane of dark and nefarious Mind Force protected the King in Yellow.

Of course, despite his defenses, the King in Yellow was assaulted by immense pain, and his senses were greatly affected, especially since the Soul Annihilator was only the beginning.

Once the first soul invasion spell weakened the Mind Force's membrane, a different spiritual attack followed. This one was not as powerful as the Soul Annihilator but slowly crept toward the King in Yellow's Inner Law Dimension.

The King in Yellow speed of thought and reflexes slowed down significantly as the force moved through the Mind Force's membrane. 

Things only became worse as his senses fell into chaos, showing him things that were not there.

Zatiel's Rebirth Eye was bleeding as he used the power of the divine organ beyond its limits, and the bone sword hacked with full force toward the King in Yellow's neck.

His senses should be too erratic for him to react to the sword, but the King in Yellow still managed to block the attack, and then his eldritch aura exploded as the tentacle arm regenerated.

Zatiel was surprised by the King in Yellow's regeneration ability, especially since that arm was unique, made with immense vitality.

However, the Neo-Demon did not have time to think as the newly regenerated tentacle arm attacked him.

Luckily for the Neo-Demon, the King in Yellow's senses were still impaired, allowing him to dodge it. 

Zatiel was sure that the blow had the power to shatter half of his body due to the ridiculous force in the tentacle arm. Nevertheless, he also perceived how the King in Yellow spent an immense quantity of energy to regrow it, exhausting him and worsening his wounds.

The fight between the two carried on as dark eldritch and purple golden weapons collided around them.

For the King in Yellow, the world around him became nothing but a blur and could barely discern anything, but he still managed to pressure Zatiel, using his agile staff and powerful tentacle arm.

Zatiel's right arm was trembling as the constant clashes damaged his muscles and bones, but he kept fighting head-on and piercing more and more deeply into the Mind Force's membrane.

Relying solely on his instincts, the King in Yellow managed to penetrate the sword defense once again and land a heavy blow with his staff, this time breaking the Neo-Demon's breastbone.

Zatiel released a mouthful of blood as the blow generated immense damage to his chest and inner organs. Things only grew worse as the tentacle arm prepared to attack and finish him off.

Despite the immense danger in which he was, the Neo-Demon showed no fear at all. On the contrary, a small smile appeared on his face.

The King in Yellow could not see Zatiel's smile, but he felt that something was very wrong. He detected it in the last possible second.

Something fell from the sky with so much force and momentum that it completely shattered space-time on its path. 

Anyone else could only see a white beam, but the King in Yellow knew that it was no other than the Supreme Neo-Demon that used his body as a weapon to clash against him.

Ezequiel was less than a meter away from the King in Yellow's head, with his arms covered in a red spherical bubble forming an x.

The King in Yellow's eyes displayed his surprise. The last kick not only carried immense physical force and eldritch aura but there was also a hidden soul invasion spell in it. 

While he was aware of Primordials' ability to translate their physical defenses into spiritual defenses, he was sure that attack would have incapacitated Invictus long enough for him to take care of Zatiel.

The King in Yellow, the Champion of the Eldritch Universe, an entity equal to the Incarnation of Death and Destruction, may know about the ancient and forgotten Primordials. Still, he knew nothing about Neo-Demons and their True Wills!

His instincts screamed danger due to the counter vibrational frequency in the Supreme Neo-Demon's arms. 

Pushing himself to the extreme to the point he burned a significant amount of his life force, the King in Yellow gained enough power to raise his staff and nullified the Supreme Neo-Demon's counter vibrational frequency.

Ezequiel's eyes narrowed as the King in Yellow once again blocked his most dangerous attack, but that mattered little as he drove his forward with everything he had.

The mighty eldritch staff weakened significantly when the King in Yellow used it to nullify the counter vibrational frequency, so the Supreme Neo-Demon's body broke it in two before clashing with the actual target.

"BOOM!!!"

Ezequiel and the King in Yellow fell from the sky, surrounded by a storm of white lighting and dark eldritch aura as they pierced into the ground, creating a cataclysmic event in End Corridor.