The Invincible Full-Moon System

Rex fixed his gloves, preparing to battle against his own two spirits in their physical form.

Now that the Werewolves had been handled, he could focus back on what he was doing.

He was completing the requirements from the sudden quest to help Nivellen, but stopped when the pack challenge came out of nowhere. The last requirement was—to get a single phoenix feather, the Spirit Emperor has one.

Amanir said so, he had seen with his own two eyes.

Since Devo confirmed it knowing Amanir was a thief, Rex decided to go to the spirit realm.

But, in addition to that, he would also upgrade Devo and Amanir.

"Care to tell us what we are here for?"

"I'm sleepy. I don't want to do anything. Let me back inside!"

Rex ignored Amanir's tantrum and crossed his arms, staring at Devo with a strong gaze.

"We are here to train. I'm going to upgrade your aptitude to contain more elements. I couldn't even begin to imagine, what would it feel like to have more than two spirits inside me. Maybe because I got that stupid fluffy thing as my second spirit," He said, pointing at Amanir.

Upon hearing this, Amanir turned his chin high and away, "You're lucky you got me"

As always, Amanir made Rex want to tear him apart.

But he held on, it was Amanir who told him about the phoenix feather anyway.

The System said that Devo—and Amanir would need to fight a high spirit in front of a Spirit Adjudicator. I don't know how they fare against the other spirits in the spirit realm but if I'm aiming to strike a deal with the Spirit Emperor, both of them need to be stronger.

Due to that, Rex was going to train them to be strong on their own.

On the other hand, Devo rubbed his chin like an old man.

"If that's the case, it's going to be very hard to achieve"

"And why is that?"

"Both of us are considered as high spirits. In order to increase our aptitude, we need to battle other high spirits. But I never saw any spirit other than lesser spirit upgrading their aptitude—I don't think it is possible because our natural elements are too strong to accept another"

"Don't worry about that, I'm going to make the Spirit Emperor help us"

"What...?!"

Devo was taken aback, he knew how overbearing and powerful Rex was.

But this was different.

He defeated a God but Yulthar was merely in a broken avatar, he wasn't in his realm form.

On the other hand, the Spirit Emperor is in his true form, Rex wouldn't be able to even touch the edge of his hair no matter how much he tries. Only those with sufficient divinity—and in the eleventh or higher realm could touch the Spirit Emperor.

Not to mention the difference in realms, the Spirit Realm is not the same as this realm.

Someone like Rex, who spent his life here would be affected by the change in density.

It wasn't a matter of strength, the spirit energy there was too much to handle.

"Look, I know your pride is sky-high after defeating that God but think about this again"

"Don't bother changing my mind, I already thought about this"

Upon hearing this, Devo could only sigh, he knew he couldn't dissuade Rex from this.

"Alright, I understand. When would we depart?"

"About a month from now but less than a month would be good"

For a moment there, Devo nodded repeatedly but suddenly paused, his body stiffened.

"A month?! Are you insane? I thought the preparation—would at least be five years! Even if it were five years, I would still think that it was too fast but one month? It's impossible, there is no way we could achieve that" He screamed.

Such a small timeframe was too ridiculous.

Even if they trained non-stop, nothing would change in a mere month.

"You finally lost it, huh...? I think the slashes from the God you fought minced your brain"

Even Amanir, who was mostly playing around all the time shook his head.

Knowing the severity of the plan, Devo, took a step forward, "A month is too little, and even if somehow you could enter the Spirit Realm fine, there's no way we could be prepared enough to battle other high spirits"

"I haven't even got accustomed to my new strength," He added.

Rex frowned when he heard this.

He asked Devo to elaborate on what he meant by that and was surprised by the answer.

Spirits are vastly different compared to Awakened or even Supernaturals.

Instead of siphoning their natural energy to cast spells and a myriad of other abilities, Spirits were born with a Soul Artifact that would be developed using spirit energy. But most—of the time, Spirits could only accumulate spirit energy through living.

External help that would aid them in becoming stronger was almost non-existent.

Rather rare compared to the Awakened for example that has elemental stones.

Due to that, Devo was greatly surprised when Rex gave him a Lightning Ego that somehow could increase his spirit energy to a terrifying degree—as if he had gotten older. Using this accumulated spirit energy, Spirits would begin to cultivate their Soul Artifact.

In Devo's case, his Soul Artifact was a pair of heavy manacles.

His age made it possible for him to manifest his Soul Artifact, the golden chains on his wrists.

As for the lightning element he had, it came when he crossed planes.

Since this was not Devo's rodeo to bind himself with an Awakened, he knew that the element his Soul Artifact possessed in the mortal plane was lightning. Other than that, he also has the ability to control the weather.

In short, his abilities came from his Soul Artifact which unlocked more power in this plane.

Just from this alone, spirits are vastly different than normal.

Devo had gotten stronger recently and his Soul Artifact hadn't been accustomed to his new height of spirit energy accumulation. Because of that, he was far from ready to battle, other high spirits that had already more accustomed.

Going against other high spirits in his state would definitely hurt his Soul Artifact.

He has a high chance of dying if he goes through with this.

"What about you, Amanir? What Soul Artifact do you have?" Rex asked.

Amanir then shook his head, swaying his floppy rabbit ears, "My ears is my Soul Artifact"n/ô/vel/b//in dot c//om

It was quite surprising to know that Amanir's ears were his Soul Artifact.

Considering that Devo's Soul Artifact was a pair of manacles, Rex expected all spirits to have an item as their Soul Artifact, but it didn't seem to be the case. Regardless, Rex shrugged his shoulders, "I still want us to be ready in a month,"

"I have my reasons and this couldn't change" He added truthfully.

Since the time limit for the Race Evolution Quest was at the next Blood Moon—he needed to move fast. Because of that, even with Devo's explanation, the plan couldn't change. It would be catastrophic for Rex if he failed.

"I think you underestimated the Spirit Realm too much," Devo said, in a warning tone. "All of the realms you entered up until now, were compatible with you. None of them were really a threat. If you enter the Spirit Realm recklessly, your soul will be crushed instantly"

Listening to this, Rex frowned as he hadn't anticipated the Spirit Realm to be this dangerous.

He was about to ask the System for information but Devo already told him.

"Hmm... can you give me a taste of it?" Rex finally asked.

Upon hearing this, Devo and Amanir exchanged a look before nodding their heads.

A brief moment later.

Rex expected that opening a portal to cross into the Spirit Realm would be a hazardous kind of process, but it wasn't. It only needed one spirit to open the Spirit Realm—in this case was Devo.

Swish!

Channeling his spirit energy, the golden chains on Devo's wrists hummed with power.

Soon, multiple glyphs could be seen appearing across the golden chains.

Making a smooth swing, Devo punched through the space of the mortal plane, sinking his fist into another realm entirely. As he did that, the glyphs glowed even brighter—they swirled in a circle and helped Devo's fist go deeper.

As this process continued, Devo decided to elaborate further.

"A spirit is always connected to the spirit realm, we are never severed from it,"

"Due to that, our spirit energy would keep on increasing deepening how time moved there. It helped us wander between realms easily—allowing us access to the spirit realm almost at all times. But this is also a limitation for us,"

"Because we are connected, the influx of time didn't affect us at all"

Like the countless realms, time flowed way slower than the mortal realm.

If a spirit stayed inside the mortal realm, for ten years—they wouldn't gain ten years of spirit energy but the equivalent of time passed in the spirit realm. In this case, ten years here was equivalent to a year in the spirit realm.

Rex's perspective of Devo and Amanir changed instantly when he heard this.

So they are way older than thousands of years... this makes me feel really young.

A cracking sound resounded—Devo's fist sank deeper—into the spirit realm, swallowing his hand entirely. He then focused back and muttered, "My name is Devoratar Tridan, allow me to pass through. I am a true spirit"

Upon saying that, a portal expanded from his fist, showing an entirely different terrain.

Rex peeked into the portal and frowned.

He couldn't see anything other than floating rainbow clouds, the place seemed to be a place above the clouds. Regardless of his powerful eyesight, what lies beyond was completely out of his grasp.

Checking the sight to his content, Rex then turned to Devo.

"So this is the spirit realm?"

"Yes, this is the spirit realm, my house to be exact"

"You have a house?"

"Of course we have one, how do you think we lived in the spirit realm?"

"I thought spirits were floating around and wandering about until an Awakened caught you"

"We're not pets, we are not caught"

"Not caught? I caught you in case you forgot"

"You are an exception, you gained help from another powerful force"

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"I guess you're right"

From the start, Rex gained Devo from the System, he wasn't the one who captured Devo.

Pushing away the banter, Devo then said, "Since you wanted to taste how it would feel like in the spirit realm, I brought you to my house. The spirit energy in my house, is not as dense, as the outside so you should be fine"

Upon hearing this, Rex moved and stood in front of the portal.

He was planning to train Devo and Amanir—but it ended up this way.

It was not a bad progression though.

"Okay, try me, I'll endure it" Rex said confidently, jumping up and down to prepare himself.

Seeing this, Devo sneered as that confidence would soon disappear.

"How about I let the spirit energy through a finger-sized hole and we'll start from there?"

"Alright, open it"

"Remember, the spirit energy affected your spirit core and your soul"

Rex nodded in understanding, he instantly activated his spirit core and medias in his body.

In addition to that, he also prepared himself to be struck with pain.

Having a passive skill that could nullify soul-related abilities, Rex was confident in himself.

Pivoting to Devo, he nodded to signal the opening of the portal.

I have the Anti-Soul passive skill and my soul was also stronger thanks to the Succubi.

I should be able to sustain this spirit realm's effect easily.

Swoosh!

Devo opened a small hole in the portal, letting the energy from the spirit realm to burst into the mortal plane. Rex could feel a breeze hitting him, but his muscles were all tensed to the point of bulging fiercely.

"See? I could easily sustain thi- Guaghkkh! What the fuck?!"