Divine Seal: Child of the Elements, starting with a contract with Gu Yuena.

What appeared before them was not a horde of demons, but only one, yet it plunged everyone's hearts into despair.

"The Demon Race..."

Like the previous Luke tribe, they recognized the race of this demon.

The Demon Race is the second largest race among the demon races. The race has a strict hierarchy, ranging from lowly lesser demons to top-ranking demon lords. Their chieftain is Samigina, the fourth-ranked necromancer among the seventy-two demon gods, who is revered as the Demon Lord by his people.

The most terrifying talent of the demon race is evolution. Even the lowest-ranking lesser demons, given enough opportunity, can advance all the way to become a demon king. Their overall combat strength is second only to the demon god emperor's own race. Even the demon gods ranked second or third are three points inferior in terms of overall race strength.

That black horse is a Nightmare Horse unique to the Demon Race. The most powerful Nightmare Horse can evolve to the ninth rank. The Necromancer God Samigina rode the powerful Nightmare King.

Nightmares and demons are of the same rank, and when the two are paired together, they can unleash a power greater than the sum of their parts, much like a demon knight.

Gu'ao and Na'er were also at the fifth rank. They could tell at a glance that this demon's spiritual power far exceeded theirs, and it was probably already at the peak of the fifth rank, close to the sixth rank!

A fifth-tier peak demon commander paired with a fifth-tier nightmare demon horse—their combined power is enough to put them in a fighting chance even against a sixth-tier opponent!

Of course, a sixth-tier enemy is nothing to Gu'ao. Not to mention demon cavalry comparable to a sixth-tier enemy, Gu'ao could easily deal with even a true sixth-tier enemy. The problem is, he is a knight now.

However, easily defeating a sixth-tier opponent was possible under the premise of fighting as a mage, but now he has to fight as a knight.

Without a word, the demon cavalrymen roared to the sky and launched their most intimidating attack—a charge.

The Nightmare Horse's hooves blazed with demonic fire, charging towards the six like a black lightning bolt, carrying immense pressure. The Demon Commander held his jet-black demonic sword high, gathering power with the speed of the charge, possessing an almost unstoppable force.

Gu Ao stepped forward without hesitation to block the front of the group, his sword held horizontally in both hands to parry. A faint golden light rose in front of him, and the knight's skills were mixed with light magic, instantly taking shape.

At the same time, the guardian knight Shen Lie's protective light shield, the shield warrior Shi Jian's rock barrier, and the Zhao sisters' water-based defensive magic took shape one after another, with four defensive barriers stacked on top of each other, firmly protecting Gu Ao in front of him.

With a deafening roar, the demon leader's jet-black demonic sword, carrying the momentum of a charge, crashed down. The four defensive barriers crumbled instantly like paper, with only Gu'ao's last defense holding up against the attack.

Facing the enemy, Guo remained calm. In his knight form, his combat power was inferior to Na'er's, so what he needed to do was create opportunities for Na'er.

The first step was to separate the cavalrymen from their mounts.

With a thought, a rune, two halos, and a shadow appeared above his head, at his feet, and behind him, respectively.

Guardian Knight skills: Guardian's Grace, Faith Aura, Power Aura, and Angel's Blessing.

The first three are all second-tier skills, and the last one is a fifth-tier skill.

Gu'ao can be considered a half-punisher and half-guardian, because he doesn't use a shield, so he didn't learn the Guardian Knight skills that require a shield. However, some light-based support skills are very simple for him, given his Light Child physique.

The four support skills instantly boosted the condition of Na'er and her group of five, and the spiritual energy that had been stagnant due to the pressure from the two fifth-tier demons began to boil again.

The longsword in his hand was instantly enveloped in incandescent light, completely concealed on the blade, its body as clear as crystal, and a strong divine aura soared into the sky.

At the same time, blazing golden light erupted from his body and weapons, the golden light taking the shape of flames, instantly dispelling the stench brought by the approaching demon cavalry.

Fifth-tier Retribution Knight skill: Holy Sword.

Fifth-tier Retribution Knight skill: Sunfire.

Light and fire are perfectly fused in the sword, unleashing power exceeding that of ordinary fifth-tier skills. Coincidentally, the sword in his hand is of dual attributes of light and fire, and it was made by his own hand, named the Sword of the Sun.

Other types of magic cannot be used, and light magic must also be restricted. One must always use a little ingenuity to utilize one's abilities.

The longsword suddenly swung upwards, and the liquid spiritual energy around him vibrated at a strange frequency, transforming into a golden dragon of spiritual energy. It roared to the sky and charged straight up, colliding fiercely with the demon leader's demonic sword!

Fifth-tier Retribution Knight skill: Rising Dragon Strike.

The series of Guardian Knight and Retribution Knight skills poured out like a flowing stream, giving Gu'ao an incredibly exhilarating feeling.

The demon commander had not expected Gu'ao's counterattack to be so swift and powerful, and was caught off guard, thrown off his horse.

Gu Ao stepped onto the Nightmare Horse's back, using the momentum to pursue, while the Nightmare Horse was kicked towards Na'er by the reaction force.

Na'er immediately understood, and wielding the Silver Dragon Spear, she led Shen Lie and the other three to attack the Nightmare Horse that had lost its master.

The Sun Sword in Gu'ao's hand clashed back and forth with the black magic sword of the demon leader on the yellow sand desert, the sound of their collisions was incessant. However, as time went by, Gu'ao gradually felt that he was not able to hold on.

In order to separate it from the Nightmare Horse before the Demon Lord could react, Gu'ao used several skills in succession, leaving him with insufficient spiritual energy.

Those three second-tier skills were just extras; the fifth-tier skills were the main attraction, not to mention that he had also secretly used several spells to enhance his attack power.

The starting spiritual energy consumption for fifth-tier skills is two hundred. Moreover, Holy Sword is a secret technique, Rising Dragon Strike is the most powerful attack skill among fifth-tier skills, and Solar Fire is even more terrifying, requiring thirty spiritual energy to last for one breath, making it a skill that consumes spiritual energy continuously.

During the ongoing battle with the demon lord, his spiritual power was rapidly declining. If his spiritual power dropped to a certain level, he would be unable to cast any spells, no matter how powerful they were.

Actually, it was his fault. The inspector wanted to give the Holy Son some experience. Although the fifth-tier peak demon commander was strong, he was nothing in front of him, who was at the seventh tier. Before he set off, Elder Yu also told him that he did not need to take action unless it was an emergency.

The inspector failed to notice that Gu Ao had used magic in secret, and was even less aware that the Child of Elements consumed very little magic when using skills.

This led the inspector to determine that Gu Ao's spiritual energy consumption was exactly the same as his actual consumption.

Therefore, in his view, Gu Ao still had a surplus of spiritual power, and Gu Ao had not yet reached his limit.

With his inner spiritual power having fallen below 500, his mind made up. The Soul Furnace of the Same Origin began to operate rapidly, and the two fifth-order spells were about to merge into a sixth-order spell to destroy the demon in front of him in one fell swoop.

Just then, a silver spear shadow ripped through the sky like lightning, piercing through the demon leader's sword-wielding right arm, devouring his life force, and rendering the entire arm completely useless. A mournful roar echoed throughout the Gobi Desert.

How could Gu Ao let such a good opportunity pass by? He drew his fifth-tier Holy Sword and slashed at the demon leader's right arm.

Both arms were crippled, but the Demon Lord was not yet dead. Na'er arrived next, her silver dragon spear piercing straight into his back, the spear's light penetrating his head, finally ending the Demon Lord's life.

Seeing Na'er's beautiful figure appear behind the fallen demon, Gu Ao breathed a sigh of relief. Turning around, he saw that Na'er had severed the two legs of the Nightmare Horse, and the four of them were finishing up so that Shi Jian could deliver the final blow.