The Invincible Full-Moon System

It's located at the end of the skill tree of the system after he reached the requirement to learn the skill, the requirements are becoming a King himself which is reaching the ninth-rank realm, and also experiencing a fight with multiple King-level entities.

But thanks to the sudden quest, the reward has given him this skill without the need for skill points.

Normally he would've needed to pay 100 skill points in order to learn the King of Kings skill, a hefty amount that he doesn't have. It would've taken him forever to accumulate that many skill points, and now he gain access to the skill.

Comprehending the red force doesn't require that much, and yet it's a very helpful power.

One of the essential power in his arsenal that will always stick with him no matter how strong he becomes, and now this King of Kings skill is a skill that requires more skill points than the red force, and that alone speaks of its strength.

Its ability is a binding ability, rendering King-level entities no choice but to fight the caster.

Like at this current moment, Rex managed to bind Brigitta and Orson who has ninth-rank realm powers which are considered King-level entities through something called Brand of Crown. If they got branded then they are bound to attack only Rex.

No matter how much they tried, their bodies would not allow them to attack other than the caster.

From the description of the skill, Rex learned that the more King-level entities were branded by the Brand of Crown, the weaker the Brand of Crown gets. But it's unclear how much weaker as right now, using two Brand of Crowns, Orson is not able to touch even the edge of Adhara's hair.

Rex now assumed that he can probably brand three or four King-level entities soundly.

Although that ability alone already makes the skill very powerful, probably the most powerful binding skill in existence as it can render multiple ninth-rank realm entities useless, it also has an additional effect.

If it's stayed on for long, the Brand of Crown will expose the weak spot of their powers.

An additional effect that makes Rex think that this skill is literally close to being overpowered, but he finds it natural as he gains this skill from surviving an impossible situation that should've actually ended his life.

But he survived and is now rewarded with this overpowered skill.

'I don't know how long and how the Brand of Crown can expose their weak spots, but I'm all here for it' Rex thought with a satisfactory smile on his face, the exhilaration brought by power gives him a sense of invincibility.

Yet again, this feeling is probably what the system wants him to feel.

Looking up to the moonlight illuminating the sky like a naturally intricate chandelier of the sky, Rex smiled with a sense of power, 'You did tell me that you would make me invincible under the full moon, and I think I can now see the glimpse of it'

While Rex is basking in the power of the moonlight, Orson is becoming berserk.

Upon looking at the smirk on Adhara's face, the anger inside of him erupted and the fire and lava elements that he controlled responded to his heightened emotions. Anger is a positive force for a Fire Elementalist such as him.

SWOOSH!!

"I AM ORSON PETRA SZELL!!" Orson roared.

It was as if his entire body was blooming with absolute fire, turning him into the servant of the Fire God itself. "I AM THE SLAYER OF THE HEAVENLY DRAGON BARKYSS THE LORD OF NATURE!! DON'T UNDERESTIMATE ME!!"

KABOOM!

The veins inside his eyes exploded turning his eyes red in desperation, the defined muscles, spirit energy, and even arcane mana were going violent as he puts more and more strength into pushing this invisible wall that blocked his battle axes from reaching Adhara.

On top of that, Orson also activated his Elemental Dominion, amplifying his power to the peak.

But no matter how much he tried, no matter how stronger he becomes, it was all futile.

Orson was faced with an unbreakable wall that prevents him from attacking Adhara due to the Brand of Crown on his face, for the first time he felt a sense of powerlessness that should be a foreign concept for him.

No matter how hard he tries, he can't wipe the smirk off Adhara's face.

Unlike Flunra that seems to be wary when he saw Orson come straight at them, Adhara already received telepathy from Rex saying that there's no need for fear. Nothing Orson can do will be able to reach her.

Due to that, Adhara stayed in her spot unmoving despite the charge of a monstrous entity.

"I-I am Orson, but just how... how is this possible?" Orson mutters softly, there's a hint of defeat inside his tone as he was unable to force his way through this unbreakable invisible wall that stopped his momentum.

Smiling even wider, Adhara walks a couple of steps forward near Orson.

For some reason, Orson replied by taking a step back unconsciously. But Adhara reaches to him before she leans forward with a maniacal smile. "Don't worry, there's no need to beat yourself up about this. It's simple really, you're just not at the Alpha's level..."

After saying that, Adhara raises her claws before she slashed Orson right in the face.

With the immense increase from the Herald Mark, the slash pushed Orson two steps back and his face got knocked and face to the side. Four bloodied streaks can be seen on his face, the blood slowly drizzled down his shocked face.

Before he can recover, a hand grabbed his shoulders and his vision turned blurry in the next second.

BOOM!

Orson didn't even have the time to react before he got slammed back into the Great Barricade's wall, the destruction of the wall increased even more as more parts of the wall started to crumble. It was nothing but a yank from Rex's raw strength.

If he wanted to, Rex can finish this fight rather quickly.

Although killing a ninth-rank realm Awakened is going to take a while as their life force is scarily high, he can finish the two of them in under an hour and even dominate them completely. But he was now only doing this to show the disparity in their strength.

Out of everything, there's still a question that lingers inside Rex's head.

"Just tell me this, Brigitta. I know you can tell the difference in our strengths, so why resort to a fight instantly? All I want is Kyran back, I don't even have any intention to meddle in your war against the Supernaturals. So why do this? Why take the hard way and risk humanity?" Rex asked while training his eyes in front.

Rex knows that there's something that made them do this, but he doesn't know what.

Even though he knows he can win this fight easily, there's still some curiosity inside of him that beckons him to seek for an answer. Not only that, but he also felt something else, 'I'm at a total advantage, human territory can be infiltrated by me right now easily. Both of them aren't able to stop me'

'But why... why am I feeling uneasy right now? Where is this uneasiness coming from'

It's true that victory is nothing but shooting a crippled man in the head, there's absolutely nothing that can stop him from doing that. Rex is sure of that, but he can't help but looks around the place warily.

Something is definitely wrong, his danger sense is ringing even harder as the battle goes on.

Rex stands at the center of the desolate plain and darted his eyes around while Brigitta and Orson recovered, he tries to find any hint of the uneasiness inside of him. But aside from them, he can't feel anything else.

'You have no idea what's going to happen if you meet with the humans now'

Queen Catsha's voice echoed inside his mind, justifying the uneasiness he was feeling right now.

A frown alongside the heightening of his senses in preparation for a sudden attack instills him with wariness, he knows that there's something more than meets the eyes. 'But what is it?! What is the missing piece that I don't know about? The missing piece that causes this weird behavior from both Supernaturals and Humans!'

Just as he thought of that, his eyes refocus when he saw Orson and Brigitta on the move.

"If we can't chip you down, then let's settle this with one final attack, Rex Silverstar!!" Brigitta roared as her entire being flickered with radiating energy that keeps on increasing, she was charging for the final attack, putting everything on the line.

No hint of answering can be seen, she intends only to fight.

Similar to Brigitta, Orson also puts everything he had into one final attack to end this battle.

Everything happened in an instant, Brigitta has turned into a wind goddess with the longsword in her hand sucking every single mana in the surroundings like a bottomless vacuum. On the other hand, Orson turned into a fire God cracking the ground with fire and lava alongside the brightening and condensation of his red heavy plate armor.

From the looks of it, they really wanted to end this with one last attack.

'I never anticipate it to come to this, if they both died then humanity will lose a very high portion of strength of the war against the Supernaturals. What are they thinking?!' Rex gritted his teeth, but he didn't back down and harness everything that he has.

Clashes of their power-ups spark the entire night sky, and the fabric of the dimension is torn.

Many black voids appeared around the place as the world are breaking apart from the concentration of their powers, it was too much to the point of the dimension is literally tearing apart. It was mostly due to Rex's violent kingly energy.

Not wanting to underestimate his opponents, he used everything in his arsenal.

Pure Brace of Moonlight, Red Force, Extreme State, Berserker's Curse, and even his elements are riled up to the absolute limit, Adhara and Flunra got flung away from that burst of energy but they both are fine thanks to Adhara deflecting most of the violent energy.

Rex is in a state of frenzy, he has shown the power that topped everything in this world.

Crack!

BOOM!

The three King-level entities' auras shot up to the sky and destroyed the sky, everything is tearing apart as if the entire world was about to collapse. Like an aurora decorating the sky, these voids are also beautiful and scary to see.

But these voids are not halos. But instead, they are literal tears in the dimensional fabric.

Similar to glass breaking into those pieces shreds, the sky also did the same because of them. Many of the normal people that saw what they did to the sky become horrified, it was like the end of the world.

"Arcane Magic, Tempered Squall Assault!!"

"Arcane Magic, World Despoiler!!"

SWOOSH!

KABOOM!

Orson threw both of his flaming battle axes that are spinning and flaming with fire and lava, the battle axes left a trail of destruction in their path. Brigitta on the other hand fired a beam of green light from the tip of her longsword that creates a ringing sound that rings and trembled the eardrums.

Responding to these attacks, Rex lowers his stance before he blitzes forward quickly.

Like a fearsome warrior he charges right at the two powerful arcane magic that threatens to tear him to shreds, he already puts the Amurus Katana away and cloaks his entire claws with the Executor Slash skill, influenced by the Blood Moon.

"It's your choice!! Don't blame me if you die from this, Executor Slash!!"

Just as he was about to swipe his claws and clash against the two arcane magic, Rex's attention was pulled to the side for a moment when he sensed an aura heading towards him. There's an aura, also a King-level entity. A familiar-scented figure but he didn't recognize it.

'Who is that...?' Rex thought with a frown.

But then out of nowhere, the King-level entity emerged and went straight to Rex.

"ROYAL BLACK PRINCE!! STOP IT!!" The figure shouted at the top of his lungs, desperately trying to stop what was about to happen. A weird sight that still puzzles Rex even now in the heat of the moment.

Propelling himself even more, the figure continued, "DON'T CLASH WITH THEM!!"

Although Rex wanted to avoid the two arcane magic expecting the worst, he was too late as he was already inches away from the two arcane magic. 'Just what the hell is going on, what the heck is happening...'

KABOOM!!