The Invincible Full-Moon System

Rex has learned about the Sanity stat on his first-ever experience of a full moon after he was no longer a human. He knew the Sanity stat would be calculated during each full moon and it would determine whether he would lose control or not.

It was measured through his current state of mind.

Positive influences would increase his Sanity stat and the same for the opposite.

Keeping it above 50% is preferable as that would stop him from losing control.

But the moment he became a High Werewolf and then eventually a Royal—the influence of a full moon had less effect, on his mind, and the Sanity stat became less strict. Even if it fell to 30% during a full moon, he wouldn't lose control that easily.

Not to mention there was Evelyn now who could help him boost his Sanity stat as his Luna.

As time passed, it became hard to drain his Sanity stat to below 30%.

Even against the Fifthborn who gave him a lot of trouble—his Sanity stat barely reached the 30% mark. Because of that, Rex became lenient about this, and forgot that there were other unexpected methods to decrease it.

One such thing happened some time ago when his Sanity stat decreased suddenly.

It was then the System notified him that he needed more pack members.

Or the recent one when he tried to attack Calidora, his sanity could drop if he did that.

Just as those two unexpected methods that could drop his Sanity stat, another one emerged at this moment. Not only did his Sanity stat drop but it plummeted to zero, something that he never experienced before.

Rex barely devoured raw fresh meat and the moment he did, his sanity was dropping rapidly.

...

<Notice: the user's Sanity stat is decreasing rapidly!>

<Sanity stat has reached 0%!>

<Checking the user's Berserk stat... 27%! The user's Berserk stat is below 50%!>

<A Werewolf operates under dual primary stimulations—wrath and hunger. Wrath stimulation triggers combat setup, escalating to violent behavior. Hunger stimulation, ignites a predatory alignment, focusing on the raw acquisition of food>

<Current food deprivation level: High (Above 3 Months)>

<Ravenous Penalty Quest has been issued!>

Objective: Satiate the user's hunger!

Description: When the Prince hunger, he feeds.

Rewards: Freed from deep hunger and recover 30% of Sanity stat.

Penalty: Losing control and permanent -25% stats.

...

Upon hearing what Rex said, the three royals frowned and felt uneasy.

"Is it true that you killed the Silverstar Pack?" Prince Leif asked, keeping his gaze straight.

Princess Selene nodded firmly, "I did, I've killed them myself"

Even though their corpses vanished into energy, she was sure that she killed them.

Not a single living being could survive what the Silverstar Pack endured.

"What about the Elves, Tigerman, and all the other kingdoms under him?" He continued.

As opposed to Princess Selene, Prince Alaric was the one who answered this question, "Our spies reported hours ago—there were no moves from any of the Kingdoms. The Royal Black Prince came here without any help—it was because of that we didn't foresee his attack here in the first place"

Prince Leif's frown deepened, "Then what did he mean by that?"

"Who is coming to help him?" He added in confusion.

On the other hand, a few paces away from them were Riona who was frozen in place.

She and the other Dancing Stripe Pack came here along with Princess Selene to take care of the Royal Black Prince. All of them had arrived a minute ago—and Riona was greeted by this, the sight of the blue bloods battling the Royal Black Prince.

Not to mention, she also heard what Rex said earlier with her keen senses.

His last words struck her heart like a searing knife.

'Know that by dawn, you will be dead'

Riona gulped harshly as Adhara's words rang inside her mind like a death knell.

Even more so, in Adhara's last moment, Riona saw Adhara casting a gaze at her before being killed by Princess Selene. It was not the gaze someone about to die would wear but the gaze of someone who was anticipating something instead.

She could see the hint of brutal excitement in Adhara's gaze.

At the thought of the worst, her lips quivered, "A- Attack..."

Upon hearing her murmur, the other Dancing Stripe Pack glanced at her in confusion.

But then, Riona's entire kingly energy exploded, cracking the ground beneath her before she lowered her stance—preparing to dash ahead with Rex—as her target. Her sudden explosive act caught the others in surprise, "I said attack right now!!"

Crack!

Not waiting for the others, Riona rushed ahead with her eyes bulging.

'I need to warn them of what was coming!' She swore in her mind.

Her rush also caught the Royals off guard, none of them had signaled for an attack.

"Riona?" Princess Selene muttered in confusion.

Pouring everything she had into one attack, Riona leaped and reached above Rex, a powerful hand of a Werewolf appeared above her, preparing to strike down at Rex. Unleashing a battle cry, she swung her hand downward, commanding the astral claws above to slash Rex.

"Raarrghh!"

Kaboom!!

A powerful shockwave spread to the surroundings as the strike connected.

But at that second while panting heavily, Riona's eyes widened in horror when she saw a pair of crimson eyes staring straight at her. Knowing that Princess Selene's moon spell—was able to weaken anyone, she opted to strike out of desperation.

However, despite pouring her all, her attack was stopped when it made contact.

Rex didn't even need to defend, she couldn't budge him.

"Ah... the trusted Beta of the Dancing Stripe Pack, Riona" Rex grinned—saliva dropping to the ground from his watery mouth. "I am extremely hungry, so don't come near me. On this night, your opponent is not me"

Retaliating with nothing but a glance, Riona was thrown back, screeching across the earth.

Following that, Rex's kingly energy hummed and broke him free from the flower.

He easily thwarted the flower as if it was nothing.

Princess Selene frowned as she was pushed back a little, "He broke my moon ability easily?"

Just then, Prince Leif squinted his eyes.

Prince Leif saw Rex salivating profusely from his mouth as if he were a rabid dog despite him still being in his Human form. Rex then planted his feet, firmly into the ground—crossing both of his arms in an X-shape to shield his face.

Swoosh!

His kingly energy began to seethe like fire, causing steam to rise violently from his body.

Even the sound it made was almost like the crackling of flames.

Slowly, his form began to shift before the onlookers' eyes, muscles expanding, fur sprouting—until he towered in his full Werewolf form. His massive body was marked by red and black lines, two horns jutting from his head as he stood upright, a figure of regal presence.

At his transformation, some of the Werewolves felt the urge to kneel washing over them.

Rex's bloodline was simply too grand for them to stand against.

However, as his transformation was completed, his aura continued to climb higher.

Rumble!

Under his aura, the ground beneath him cracked as if Rex growing heavier by the second.

Not to mention, the blood moon and banished dark moon kingly energies swirled around him like twin serpents, faster and faster—a storm of power. But as the others were fixed on Rex's rising aura, the Royals were elated as it seemed Rex couldn't take them lightly anymore.

Regardless of what he would do, they would definitely prevail in this fight.

"Princess Selene, control your pack," Prince Leif suddenly said. "In the first phase, casualties would be very high. Only tell them to attack, when the battle reaches the second phase—we don't want them dying for nothing do we?"

Listening to this, Princess Selene scoffed before turning towards her pack.

Just as she was about to say something, Riona beat her to it.

"Your Highness! Kill him right now! Don't wait! His pack members are not dead!" She shouted.

Upon hearing this—Princess Selene mildly tilted her head before she snapped her gaze back to the Royal Black Prince. A violent gush of power—erupted from Rex's direction. As his body swelled to its max, it suddenly began to shrink.

His muscles were condensing into a more compact, lethal version, providing more power.

Moreover, his ink-black fur thinned—some patches falling away entirely.

Its vibrant black color also began to fade, becoming a ghostly, pale hue.

Expecting something was wrong, Prince Alaric quickly flared his wings and blasted ahead in an attempt to tackle Rex—as leaving him to prepare himself would be too risky. Flapping his wings one more time, he shot like a bullet.

Swoosh!

Channeling his demon moon kingly energy, he tackled Rex with all his might.

But when he did that, his eyes widened completely, 'He's not budging... I can't move him!'

Meanwhile—observing from behind, Prince Leif saw Rex's claws sharpened, into needle-like points, and his saliva-covered fangs grew longer and more ferocious. It was then that Prince Leif's eyes widened in realization, "Princess Selene! He was deprived, and his body had now reached its limit!"

"What?! Deprived? How can he not eat as a Prince?!" She responded in utter disbelief.

As a born Royal, all of them knew what this meant.

In a situation where a Werewolf was deprived of eating fresh flesh, their bodies would suffer and gradually weaken over time. If kept in this long enough—the Werewolf, would eventually die prematurely.

Adult Werewolves, however, wouldn't experience death like the younger ones.

Opposed to death, they would enter a self-preservation state, becoming a Ravenous One.

It was a state where their bodies overdrive their remaining strength for the sole purpose—of satiating their hunger. One last drive the body tries to find food. During this state, one would be way stronger than normal.

Some Werewolves in the past tried capitalizing on this state, using it as battle preparations.

But reaching the Ravenous One state was too brutal and strict.

One would need to starve themselves for weeks or even months, and as the day passed, the supposed Werewolf would fight with their resisting minds. Many Werewolves failed this—and those with strong minds still failed when the Full Moon arrived.

Due to that, reaching the Ravenous One state was not an option.

Served only for criminals by forcing them.

Compared to normal Werewolves, Royals also experienced this but way more extreme.

Starving themselves was extremely hard but their Ravenous One state would be worth it.

Nevertheless, it was still not a viable option, too hard to achieve.

Knowing that fact—the sight of Rex showcasing signs of deprivation made them alert.

All realized the gravity of the situation.

Fighting Rex as he was is already hard enough so they could not afford to up the stake by letting him reach, the Ravenous State. Just as the two were about to help Prince Alaric—a sudden explosion surprised them.

Kaboom!

From the east side of the battlefield, chaos erupted at the heart of the Werewolf legion.

Prince Leif and Princess Selene narrowed their gazes, as a series of explosions sent some of their people hurtling through the air, their bodies flung like ragdolls. Not stopping at that, the shockwaves rippled outward, and in the aftermath, they noticed something unusual.

Every Werewolf standing near the blasts bore strange marks.

Ancient runes had seared into their flesh, branding and weakening them instantly.

Before they could fully grasp the situation, more explosions rocked the legion—each one of them echoing with the same violent impact. Again, the Werewolves were thrown skyward—while the survivors around the blast sites were branded.

Smoke billowed across the explosion spots, obscuring their vision.

But both Prince Leif and Princess Selene could sense something within the smoke.

Four prominent auras were circulating within the haze, hidden by the smoke.

Princess Selene frowned—as she found these auras, and scents coming from these figures familiar. Before her mind could click, a Werewolf sped towards them before he stopped and bowed near Princess Selene, "Your Highness! It's the Silverstar Pack, they are here!"