Demon Lord's Reincarnation

Jun stood in front of the horde of undead with no fear only anger. Each strike he made was filled with his hatred. He pushed back the skeletal warriors and dashed towards the Elder Liches. Those that were able to get past him would be dealt with by the others. 

Jun quickly charged at one of the nearby Elder Liches. As he was moving with his ax at hand, some Dullahans blocked his path. Jun lifted his ax upward and slashed down cutting the Dullahan horse and all. 

After Jun cut the Dullahan in half a beam of ice was fast approaching him. Jun didn't bother to dodge or even block the attack as he simply continued to charge forward. The beam of ice hit him without anything blocking its path. Upon contact with Jun, the beam of ice was dispelled. 

As the hero of the temple of the God of Water, Jun had immunity to all spells that uses water as their base. Jun with a heart full of rage continued towards the nearby elder lich. As he was running numerous skeletal warriors and Dullhan's blocked his path. 

Jun hacked at each and every one of them with a speed that the naked eye couldn't follow. Jun roared as he continued to destroy all those that stand before him. Within a few seconds, Jun finally arrive before an Elder Lich. 

With his ax at hand, Jun hacked at the Elder Lich with all his might. The downward blow he did, created a shockwave that blew away the nearby undead. Yet despite receiving the powerful blow the Elder Lich was unharmed. 

The Elder Lich then reached out its hand and grabbed hold of Jun's ax. The Elder Lich was about to activate his skill [life drain], but before it could do so, Jun poured mana into his ax. The ax then fell onto the Elder Lich's body and as it tried to create a mana barrier to block the strike, Jun had already slashed down. The Elder Lich shared the same fate as the skeletal warriors and the Dullahans and was cut in half. 

After cutting down one Elder Lich Jun was going to attack the next one, but then he noticed that he was now face to face with one of the gigantic warriors wearing heavy armor. This was a Death Knight a powerful undead being that was an even greater threat than an Elder Lich. 

The Death Knight wielded a broadsword and without any warning slash downward at the ground. The ground shook and shattered making it uneven. This move had unbalanced Jun as the Death Knight rushed at him. 

The Death Knight slashed sideways with its broadsword aiming at Jun's torso. Even while he was unbalanced Jun was able to block the strike, but the moment his ax made contact with the broadsword ice started to encroach his weapon. 

"This isn't going to work!" Jun shouted as the ice was negated and Jun backed away. The Death Knight lifted its left arm and skeletal hands grabbed hold of Jun's legs. He then saw that the Elder Liches were getting ready to bombard him with fire spells. 

"God of Water grant me strength!" Jun shouted and punched the ground. Pillars of ice surrounded him blocking all the fire spells. Jun then raised his left hand up into the air and prayed to his God. 

"God of Water please aid me in my time of need!" Jun then released a wave of mana. The raindrops near him stopped falling and transformed into sharp icicles. "TAKE THIS!" Jun whipped his hand downward making the thousands of icicles rain down on the Death Knight, the nearby Elder Liches, the Skeletal Warriors, and the Dullahans, even the Wraiths were hit. 

The Skeletal Warriors and the Dullahans could do nothing as the icicles pierced and smashed them. Most of the Elder Liches were able to survive using their mana barrier, but some weren't able to hold it and were smashed by the giant falling icicles. 

The Death Knight facing Jun was relatively unharmed as the icicles were unable to pierce its armor, though you could still see some dents here and there. The Death Knight quickly grabbed a nearby corpse and consumed it. After that, the dents in its armor disappeared and its mana had returned to its peak state. 

As the Death Knight was about ready to attack again, Jun had arrived before it. The speed at which Jun moved was quicker than before. Jun then touched the Death Knight and it started to freeze. The Deah Knight had a natural resistance against frost spells but it somehow could not negate or break free from the freezing. 

A few seconds later the Death Knight turned into an ice sculpture unable to move. Jun then lifted his ax and smashed the frozen Death Knight into a thousand pieces. 

...

The humans who were watching at the rear while destroying the undead that got past Jun were looking at how the hero fought and were in awe. Jun was like a storm, a force of nature as he swept through the battlefield. He alone had dealt with a lot of undead and if he's able to destroy most of the Elder Liches then the battle would become easier. 

"Follow the Hero Jun into battle!" 

"Destroy all the Elder Liches!"

"For Humanity, For our Kingdoms, and for our families!" 

"Move onward towards our death and glory!" 

The humans had their morale raised like never before. They charged at the undead with the ferocity of lions. They started to form groups of five warriors and one mage and one healer. The humans were finally using their superior numbers to their advantage. The fear they had of the undead was swept away by Jun's mighty ax.

...

Namor who was commanding his undead noticed the shift in battle, he quickly commanded the Elder Liches to retreat and the Death Knights to protect the Elder Liches. The Dullahans and the skeletal warriors were to continue to charge. 

Namor gritted his teeth in irritation. This battle was supposed to showcase the overwhelming strength of his undead army. He was supposed to present to his new lord an overwhelming victory. 

Namor looked at Jun who had by himself turned the tide of battle. It was obvious that the human was a hero as only those so called heroes were powerful enough to do this. As Namor was about to head into battle to intercept the hero, he received a mental message from Tsukiko. 

"Kretos said that you don't need to move, he would be the one to handle the hero." 

"But-" 

"It is his command." 

"... It will be as he wishes..." Namor clenched his fist as he replied. 

...

A few kilometers from the battlefield, Kretos, Tsukiko, and Shera were watching the battle. At the beginning of the battle, the trio were in awe of how powerful the undead were. As long as an enemy dies the undead army will never lose in numbers, as they can refill the ones they lost with the corpses of the enemy forces. 

Even the strongest demon clans would have difficulty against the undead much less the humans. In fact, the special traits of the Vampire Tribe and the Succubus Tribe would be ineffective against the undead. 

When the trio saw how some of the humans had difficulty vanquishing even the skeletal warriors made the outcome of the battle clear. It was only a matter of time before the humans will once again be defeated. It was at that moment someone appeared that changed everything.

A human carrying a war ax started decimating the Vanguard of the undead. He quickly destroyed hundreds of skeletal warriors, and he dealt with the Dullahans with ease. He was like a passing storm and was unstoppable. He was then able to destroy an Elder Lich, that was the first Elder Lich that had fallen in this battle. 

He didn't stop there and quickly killed more Elder Liches and even a Death Knight fell to his might. When Kretos saw this scene, he felt excited, it was obvious what kind of human that was. 

"Another hero has appeared! Tell Namor not to touch that guy I'll deal with him." Kretos told Tsukiko as he showed his vicious smile. Seeing that smile of hi Tsukiko sighed as he sent Namor a mental message. 

"Let me test how strong this hero is." Kretos then jumped towards the battlefield. 

....

Jun continued to destroy every undead in his sight. As he was moving forward he was trying to find the commander of the undead army, the one who was wearing the armor made of bones. Once the commander fell it would be easier to destroy this undead army. Also, he wanted to kill the demon with his own hands. 

While Jun continued to search for Namor, he noticed that the undead were no longer charging at him. As he was wondering what was happening, Jun suddenly felt an immense pressure descend upon him. It was a very suffocating pressure that made it hard to breathe.

A person fell from the sky and appeared before Jun. The man looked at Jun with a vicious smile on his face. This person looked the same as any other human the only difference was he had horns protruding out of his head. Jun gripped his ax tighter as he looked at the demon in front of him with extreme hatred.