The Invincible Full-Moon System

Ruined Vampire Stronghold.

A woman is standing at the wall facing the Supernatural territory while looking at the far horizon, the sun just comes up, shining the entire world. But the sunlight makes it more evident that the Supernaturals are making a perimeter just like humanity did when the Supernatural Strongholds appears.

Vampires and Undead are the ones creating the barricade with their Supernatural spellcraft.

Most of the Vampires that were caught by the woman's eyes wears a black ring that blocked them from the sunlight, and the Undeads are also strapped in armor showing that they were ready if there was a sudden fight breaking out.

Squinting her eyes, she also saw a couple of strong Supernaturals amongst them.

But the woman's eyes landed on a particular Vampire that emits a power that is way higher than any other Supernatural around, she then recognize the Vampire before she signaled for an Awakened standing beside her.

"Keep an eye on that Vampire, I want her to always be in sight. She's the Duchess of the Vampires, Demelza, report anything that looks suspicious about her", the woman said commandingly while keeping eye contact with Demelza that looks very nonchalant.

Upon hearing this, the Awakened beside her nodded his head, "Yes, Lady Brigitta"

From the name that the Awakened refer to this blonde-haired woman as, turns out she's the last ninth-rank realm Awakened aside from Sebrof, Giana, and Denzel. Since there was no sign from the other ninth-rank Awakened to reinforce the ruined Vampire Stronghold, she made an initiative to be here.

Nobody knows that she was here, she was supposed to be somewhere else but it can wait.

"I can't reach Sebrof, what is holding him up? If he said that he was going to take care of the Vampire Stronghold, then at the very least he should be here if Giana can't make it", Brigitta mutters to herself with a frown.

Brigitta already tries to reach Sebrof a couple of times just now, but she didn't get any answer.

Just as she was about to refocus back to inspecting the Supernaturals movement with her very sharp eyes, her body suddenly jolted before she instantly covers herself with arcane mana and turns to look at her back.

In the far distance, she saw the sky was dark and flashing repeatedly.

More than that, she can feel the rampaging clashes of energies even though she was hundreds of miles away from the place. Judging from the energies alone, Brigitta frowns, "Sebrof...? Is Ratmawati City got attacked? It can't be, who is he fighting?"

Coming from below, an Awakened called for Brigitta from the ground.

Looking at the Awakened that is running towards her before jumping to the wall, he landed beside Brigitta before he reported, "I've just got news from Ratmawati City, there's a Werewolf going on a rampage in the city. It seems this Werewolf is also a ninth-rank realm Supernatural, and President Sebrof is fighting against it right now"

"What?! We just checked the ninth-rank realm Supernaturals earlier, and King Baralt is in his castle. Who is the Werewolf? How did a Werewolf of such caliber reach Ratmawati City undetected?", Brigitta mutters inwardly.

Many questions popped into her head but left without any answer.

Realizing that Ratmawati City needs some help, the Awakened that reported the news then asks, "What are your orders, Lady Brigitta? Are we going to retreat and help President Sebrof deals with the Werewolf?"

Upon hearing this, Brigitta ponders for a moment.

But her eyes caught a glimpse of Demelza's red eyes in the shadows of the forest, Demelza is looking at her inspectingly before a smirk appears on her face. Just this alone makes Brigitta shakes her head, "No, we can't..."

"If we left now, the Supernaturals will make a move. We can't leave the stronghold", she added.

Although the other Awakened expected another answer, she has a reason for deciding to stay as they just reclaimed back the Vampire Stronghold and it's going to be bad if they let the Supernaturals take it again for free.

It's something crucial in order to help the cities and humanity as a whole to be harassed.

Gazing back at the rampaging sky at the far distance again, Brigitta can only mutter in a hopeful tone, "We just need to trust Sebrof to take care of that Werewolf, I know he can as long as that coat of his is still under his possession"

Back to Ratmawati City,

King Mark on his forehead started glowing ever brightly and violently before it reaches its max.

KABOOM!

Rex didn't waste any time and lets out his entire kingly energy without restraint, it was like an atomic bomb that spreads to the surroundings and absolutely obliterates anyone weak that got hit by it.

Upon seeing this, Sebrof quickly reacts and tries to suppress the kingly energy.

With his entire body turning into a ball of red lightning, he moved to the sky quicker than the explosion of kingly energy before he envelops the entire explosion with his sheer arcane mana. It takes a huge amount of effort to encompass the entire explosion like this.

Many of the normal people ran but got quickly caught up by the explosion and dies.

Sebrof exerts his utmost effort while gritting his teeth, "RAAAARGGHH!!", his entire body spat red lightning even stronger as he puts everything he had into stopping the advancement of Kingly energy that threatens to obliterate everything.

'Just a little bit more... I need more power to stop this!'

As his eyes flash with determination, not wanting any more innocent people to die from this burst of kingly energy, Sebrof activates the robe that he was wearing. Its grey color slowly turns red, responding to his affinity to the red lightning element.

Only a handful of people know of this artifact that he possesses.

Made of an energy core and the scales of one of the Emperor Dragons, Edna the Elemental Dragon that was taken down by the neighboring major city, this coat is called the Elemental Fuse of Edna. It's a piece of ninth-rank battle equipment that has the ability to convert any mana in the surroundings into a particular mana associated with the wearer and also enhance spirit energy.

In Sebrof's case, every mana in his surroundings was turned into lightning mana.

Even though there were no storms, a phenomenon that can make lightning mana abundance, the lightning mana in the surroundings suddenly becomes thicker due to the Elemental Fuse of Edna that blasted energy and turned everything into lightning mana.

As a Lightning Elementalist, Sebrof can feel the changes almost instantly.

The red lightning sparking all over his body started becoming even more chaotic and stronger, his strength at least doubled or maybe tripled from that helping in suppressing the explosion of kingly energy caused by Rex.

With the activation of the Elemental Fuse of Edna, Sebrof managed to stop the explosion.

Swoosh!

'This amount of energy is not normal, I've fought King Baralt but even he doesn't have this much energy from his King Mark. It's almost as if his body is very compatible with the King Mark', Sebrof thought with a frown.

Looking down from the sky, he saw Rex's figure from the fading dust.

But aside from Rex's figure that is standing amidst the huge crater that he created, Sebrof can also see limbs and blood around him that were the things left by those people running for their lives. They were innocent, and most were not even Awakened.

Sebrof gritted his teeth but he can't blame Rex, 'This is all Zero's fault!', he cursed the name angrily.

Just as he thought of that he suddenly saw some changes happening in Rex's King Mark, it was purple before showing that he has the Dark or Violet Moon King Mark but now half of it started to change color.

'What's happening? His aura is slowly rising...'

Shaking his head knowing that the Elemental Fuse of Edna is still activated, Sebrof then thought, 'No matter, he won't overpower me with the coat activated. I'll take him down before he caused more trouble'

Knowing what he needed to do, and even regretting not doing it sooner, Sebrof went down.

Landing in front of Rex, he then said warningly while getting into his battle stance. With the red lightning saber that is more robust than before held beside his face in both hands, he was ready for anything that could happen, "I can easily suppress your full power, calm down and we can still talk this through. If you refuse I'll be forced to take you down, think clearly and rationally"

"Full power...? Do you really think that's my full power?", Rex mutters mockingly.

<Countess of the Dark Lunirich has given the user a blessing!>

<Night of Full-Moon Dominion skill can be used!>

<Kaiser of the Scarlet Garland needs more blood to engrave the Blood Moon King Mark, assist in providing the blood supply to obtain the Blood Moon King Mark, and make full use of the Royal Black Werewolf's bloodline by possessing a Dual King Mark!>

Upon reading this, Rex trains his eyes down before he smirks.

Sebrof can feel the impending crisis climbing up his throat when he saw the smirk on Rex's face, he was not going to believe that he can actually get any stronger than this. But reality instantly slapping on the face.

After saying that, Rex's body started sparing with a red aura on top of the kingly purple energy.

This red energy is steaming, making the space around him blurry, just like seeing something through a blazing fire. Rex's entire body now becomes blurry just from activating the red force, and his power raises even higher surprising Sebrof in the process.

Since the red force responds to bodily strength, it becomes stronger with the current Rex.

Now his stats are ridiculously high and the red force amplifies his physical stats immensely, his already sharp aura climbs even higher and the ripples of red force feel like Sebrof's body was being stabbed multiple times.

But in response to this, Sebrof's body also burns with yellow steaming energy.

Although not as impressive as Rex that has already reached the epiphany of force user by achieving the Red Force, turns out Sebrof also achieve the yellow force showing that he was also a warrior just like Rex.

Even with that, Sebrof's expression didn't get any better.

SWOOSH!

Sebrof's eyes dilated when he saw Rex didn't dash at him but actually dash in another direction.

Upon looking at this he looks to where Rex is heading before his expression turns pale, Sebrof saw that Rex is heading to a crowd of Awakened alongside military men that are a couple of miles away from them.

"Ultimate Lightning Spell, Way of Lightning!"

BLITZ!!

Boom!

Casting an amplifier spell, Sebrof created a sonic boom as his speed becomes even faster.

With bulging eyes seeing Rex's back that is in front of him, Sebrof gritted his teeth as he was at the very best on par with Rex's speed. At this rate, he wouldn't be able to reach him before the first strike.

Crash!

Kaboom!

Rex crashes onto the army of Awakened and military men that were deployed to secure the place.

Just from crashing into them alone, he killed hundreds of them as their body explodes upon contact. Not only that but the tanks, and heavy vehicles that they brought exploded killing more in the process.

Laughing like a maniac with eyes thirsting for blood, he continues his onslaught.

<Engraving the Blood Moon King Mark 1%/100%>

<...3%/100%>

<...5%/100%>

As Rex butchered each people that his eyes landed on, the percentage keeps on increasing.

Despite doing what he was not condoning normally, Rex didn't seem to be troubled by this as he kept killing more and more people in a split second. The Awakened and military men don't have the chance to react due to the disparity between their speeds.

Rex can kill hundreds of them before they even realized that they were being butchered.

The scent of blood filled his nostrils and the feeling of limbs being sliced easily overwhelmed his senses, he was used to killing but he now was killing humans that didn't do anything wrong to him.

It's unlike him, but it's clear that the last rope of sanity has been cut off.

Only when Sebrof arrived and tackled has he finally stopped as they both wrestle once again.

Meanwhile, back near the mansion.

Giana has finally regained her composure as she intends to help Sebrof to at least stop Rex from rampaging like this, she was about to flap her wings away but her ears caught the sound of gasping that pulled her eyes to the back.

Upon looking over to her back, her eyes widen seeing Edward gasping for air.

In a blink of an eye, Giana went over to him and saw his eyes were full of life as he was brought back from the dead. But she then remembered Rex giving him something, that must've been the thing that healed Edward.

Edward grabs the sword of light penetrating his chest before looking at Giana.

At first, he was confused. But soon he instantly realized that he was definitely saved by Rex as he should've been dead right now, "Where's Rex?! Giana! Tell me where Rex is?!", he asked hurriedly.

"Rex is fighting Sebrof right now...", she replied meekly.

Without wasting any time, Edward tries to pull off the sword of light but finds that he can't.

"Help me get out of this, I need to go to Rex"

"Don't, it's dangerous to be near him right now. Let's just go to t-"

"DO YOU WANT HUMANITY TO FALL?!"

The sudden burst surprised Giana as Edward glares at her fiercely, but she quickly collects herself knowing that he was the only chance to calm Rex down, "No... I don't want humanity to fall"

"Good, bring me to Rex before it's going to be too late..."