The Invincible Full-Moon System

With the way this army of Supernatural charges forward in their battle formation alone Rex was right to assume the Blue Demon and Succubus are going to be fighting at a range, only the Incubus, Werewolves, and Red Demons are charging at the front.

Red Demons focuses more on physical power while Blue Demon focus more on energy blasts.

Even though that was the general overview of the demon\'s powers, the Succubus and the Incubus experience the complete opposite. The Incubus has a shade of blue skin and its auras are also bluish, while the Succubus has a more reddish or pink tone to its skin and auras.

But instead of following the demon\'s logic, their formation is reversed.

Incubus seems to be stronger physically and they charge alongside the Red Demons and Werewolves, and the Succubus on the back alongside the Blue Demons. Just from their battle formation alone, Rex knows that this is the best possible way to attack this army of Supernaturals.

Not only the Supernaturals, but humans also use this kind of formation.

There\'s an obvious reason why the Red Demons, Werewolves, and Incubus are at the very front while the Succubus and Blue Demons are at the back, the battle formation was designed like this so that the Succubus and Blue Demons have the space to use their spells.

Rex will not allow that as he can see through them easily, he would be aiming for the backline first.

Swoosh!

While reappearing above the backline of the army of Supernatural, Rex can feel the hot air breezing through his face highlighting how fast he was going right now. It was blazing fast which none below the ninth-rank realm should be able to sense.

But due to their enhancements, the eighth-rank realm Supernaturals managed to react to him.

Pointing their hands to the sky the Blue Demons started casting their spells in response to Rex\'s sudden arrival, they fire blue demonic blasts out of their hands that keeps on increasing the more seconds passed.

From above Rex can see the hundreds of blue demonic blasts heading toward him.

Rex immediately raises the Amuerus Katana to the sky gathering more and more kingly energy on it, the eight engraved runes started glowing red brightly as the entire blade started trembling with power.

Upon seeing this, King Baralt, Queen Catsha, and Azzen frowned.

"A Werewolf with a weapon? What a disgrace!", King Baralt ridiculed, spitting to the side spitefully.

Queen Catsha has other things on her mind, the Amuerus Katana\'s showcase of power surprised her as she can feel the power radiating from it, "What kind of weapon is that? It\'s nearing an Origin\'s weapon in terms of strength!"

But as she just commented, her eyes widened seeing that eight runes are glowing vibrantly.

Azzen also realized that the Amuerus Katana has eight runes engraved on it which caught him by surprise, it\'s impossible for a weapon to be engraved with eight runes in this current era. However, Rex is holding a weapon with exactly eight runes engraved on it.

Not stopping at that, the three of them widened their eyes when two more runes glows.

Upon the activation of the two runes nearing the tip of the katana, they instantly felt threatened by the sword as its energy suddenly turn sharp, sharp enough that they know that the Amuerus Katana can hurt them despite their ninth-rank auras.

"Impossible! It\'s as strong as Blood Devourer!", Queen Catsha exclaimed in absolute shock.

Even though they were already prepared for anything that might happen today in order to kill Rex, the three of them can\'t hide the surprise on their face realizing that Rex has a weapon of that caliber.

It made Azzen frown as he realized that his own spear wouldn\'t last long against that.

Like a meteor colliding with hundreds of shooting stars, Rex spins in the air as he falls from the sky.

Boom!

Boom!

Crash!

Creating a tornado of swirling red kingly energy, Rex heads straight down into the middle of the backline that starts to disperse knowing that they can\'t stop his momentum. Even the eighth rank Supernaturals try to create hundreds of barriers stacked against each other, but all of them shatter almost instantly.

Not one of them can even slow down Rex\'s falling momentum.

KABOOM!

A powerful explosion was created at the backline of the army of Supernaturals, the shockwave keeps expanding and scorch the lower-rank Supernaturals. It keeps on taking lives before the eighth-rank Supernaturals cover them from the shockwave.

Many notifications flooded his vision as that explosion takes hundreds of lives.

Rex then straightens his back amidst the huge and deep crater that he just made before his eyes scan the Supernaturals around him, he finds that a huge bulk of them are sixth-rank Supernaturals so he decided to use a more efficient spell to take them out.

Without needing more than a second, he activates his element and turns the ground black.

Simultaneously after activating his Black Field Orko spell, Rex also summoned multiple Sky Ruptures from the sky. Even though he can\'t use his element against the ninth-rank Supernaturals since his Awakened side is left behind, taking out the weaker ones is not going to be trouble for him.

But unfortunately, the spells he chanted got completely canceled.

The ground for miles and miles wide were covered by demonic energy that supplies the demons with enhanced regeneration, and this demonic energy is so dense that his Black Field Orko got shattered almost instantly.

Following that, Rex looks up and saw that the Sky Ruptures he summoned were also blocked.

Wanting to catch Rex off guard the Vampire and Undead created a weird barrier that can mask this hellish plain, and that barrier can\'t be penetrated by outside attacks. It completely nullified the Sky Ruptures he summoned.

~

Meanwhile, Adhara and Flunra immediately dash forward seeing that Rex has already engaged.

Knowing their roles in the fight with this army of death, they both separated to either side heading to their targets. Since the battle formation of the Supernaturals has three distinctive layers, it made it easier for them to attack their targets.

At the left side of the charging Supernaturals are the Werewolves which Adhara is heading to.

Flunra on the other hand went to the right where the Red Demons are located, while in the middle was the Incubus which they would share evenly. The closer they get to the army, the faster their speed becomes.

"KRAARGHH!!"

"RAARGHH!!"

Both of them shouted as their eyes turns bloodshot as they were near the collision.

Upon reaching the very tip of the Supernatural army, Flunra and Adhara cloak their bodies with their own energy before crashing through the army of Supernaturals. It didn\'t take long before their fight breaks out.

Swoosh!

Adhara activates her bloodline forcing the Werewolves attacking her to bleed from the eyes.

Most of them are completely helpless under the sheer might of her bloodline as the Proxy of the White Omicron. It was just like Rex said, Adhara is the bane of Werewolves and they are nothing but helpless chickens in her presence.

On the other side, Flunra also rampages through the army of Supernatural with his bare hands.

It was bizarre to see one human in the midst of Supernatural that is tearing and stabbing any red demon that got close with his bare hands, something like this would only be done by someone that is unhinged and crazy.

But Flunra is not just a human, he\'s a half-Werewolf, a very powerful one at that too.

Gistella follows last as she already harnesses her blue energy to create two long barriers to isolate the Incubus that are trying to surround Flunra and Adhara, she was tasked to protect and watch over them by Rex.

Time flew by slowly as they kept on fighting endlessly, and piles of corpses started to pile on them.

Unlike Rex that has basically unlimited energy, Adhara, Flunra, and Gistella feel the toll on their bodies as their breathing becomes rapid and quick. It\'s an endurance battle for them, and the eighth-rank Red Demons, Werewolves, and Incubus are approaching nearer.

Even though they knew that they need to be smart with their energy, they can\'t.

It was not an option for them to take a breath since the Supernaturals keeps on coming endlessly like a tidal wave, but then out of nowhere, they heard a powerful roar from the middle of the army that created a powerful shockwave.

Despite not being able to look at the source, the three of them know where the shockwave came from. Only one of them can go on a rampage in the middle of an army of Supernaturals like that.

"Rex!"

~

Back to Rex in the middle of the Supernatural army.

Raaghh!

Growl!

Roar!!

Many kinds of hellish shouts resounded as the blue demons and succubus advanced toward him.

Rex puts his focus back on the fight before he growled back at the approaching Supernaturals, with one powerful dash he started swinging his Amuerus Katana endlessly, butchering everything that got inside his range.

Not one of the Blue Demons and Succubus survived one slash from the Amuerus Katana.

Limbs started flying everywhere but there was no blood to be spilled since demons have no blood but demonic energy instead, they will die when their demon cores got destroyed. It\'s what makes the demons a bad match-up for the Vampires.

While continuing his onslaught inside the encirclement of death, Rex\'s eyes darted to the side.

From the bodies of hundreds of Blue Demons and Succubus that are trying their very best to stop Rex\'s momentum, he saw King Baralt, Queen Catsha, and Azzen watching from far away with their probing eyes.

\'They\'re observing my powers, I\'ll hold most of them for now...\', Rex thought with a nod.

Although the fight would be much harder if the three of them gank him right here and right now, it seems they are taking the safer route and just trying to see what he can do using this army of Supernaturals that gladly do so for them.

Knowing this, Rex decided to stick with his element and kingly energy, hiding the other skills.

Black lightning started to sizzle around his body as he butchers the Supernaturals left and right, it keeps on increasing until his eyes finally flashed with electricity before he chanted strongly.

"Thousand Lighting Thorn!

BLITZ!!

Out of nowhere, countless thorns burst from Rex\'s body impaling the Supernaturals near him.

Just as he did that Rex jumped to dodge two powerful slashes from two peak eighth-rank Blue Demons that have wings spanning at least 16 feet, he saw two other eighth-rank huge Blue Demons that looks like snakes hiss towards him.

Upon seeing them, Rex\'s eyes then flash as he activates his trait skill, "Alpha Bearing!"

BOOM!

Rex\'s eyes flash with a red light forcing hundreds of the Supernaturals around him to fall to their knees, they were suppressed heavily by the Alpha Bearing skill amplified by his oppressive Royal Black Werewolf race.

Even with the Alpha Bearing skill, the eighth-rank Blue Demons and Succubus kept going.

Swoosh!

The eighth-rank Winged Demon appears above Rex with a flap of their wings, their movements are very quick as it\'s almost as if they teleported. Another eighth-rank Succubus used her spell to bind Rex in place from below, it feels like something touches his soul.

Just as the Anti-soul passive skill activated, the two Winged Demons started to move.

Raising their flaming blue heavy axes above their heads and imbuing them with as much demonic energy as they can, the two Winged Demons swung them straight at Rex sending him crashing onto the ground.

Under the sheer strength behind that strike, the ground rumbles as a shockwave expanded.

Without even giving any time to breathe the two demonic cores in the Winged Demons\' chests started to glow brightly, it didn\'t take a second before both of them fires a demonic blast straight at where Rex crashed earlier.

Not stopping at that, the two snake-like demons opens their mouths and sent fire breaths.

SWOOSH!

As the Blue Demons fires their own spells and skill toward Rex trying to suppress him, the Succubuses also do their own spells trying to bind not the body but the mind and soul. If anyone were to be trapped in this kind of situation, they would definitely be dead.

Even if they\'re not dead, their body, mind, and soul would definitely be crushed.

More and more Supernaturals that are lucky enough to not have their demon cores destroyed regenerated and join in, it doesn\'t matter whether they are sixth-rank or even eighth-rank, they all fire their own spells and skills.

But while the barrage of demonic energy continues, a pair of red eyes glow from within.

Demons have an innate resistance to fear from being born through fire and live only to fight, it\'s their nature but right now they can feel a wave of fear just from seeing the pair of red eyes looking at them from the blue flames.

In the next second, a thunderous roar resounded as an explosion of kingly energy blew them all.

ROAR!!

KABOOM!

Just from getting hit by the explosion of kingly energy alone most of the Blue Demons and Succubus have their bodies disintegrated, they can\'t handle the power of a ninth-rank realm entity like Rex.

From that small timeframe, countless Supernaturals falls as their bodies turned to ash.

<Level Up!>

<Level Up!>

The blue demonic flames got distinguished revealing a figure with a glowing King Mark and horns standing in the middle overbearingly, its back is still straight with no sign of burning despite being scorched directly by an astounding amount of demonic energy.

Rex stands there unfazed showing that his power has already surpassed the realm of possibilities.

Nobody whether they are Supernaturals and Humans that are below the ninth-rank realm can hurt him, the enhancement of his King Mark, bloodline, and even the system makes him invincible to those below his ranks.

Just like the system stated, he has made a great leap in the path of invincibility with the King Mark.