The Invincible Full-Moon System

"Argh...", Rex groaned after one last push before falling on top of Evelyn.

Although he intended only to dwell in the act for an hour or so, they definitely did it too much and it should be more than two hours has passed. Not only does mating with Evelyn has a richer and different feeling, but the bond between them also needs to reach 100%.

Both of them are covered in loving sweat as their rough breathing clashes against one another.

For the first time she was feeling such a new pleasure in the living world, Evelyn is very tired but she still has a weak smile on her face glancing at Rex's face that falls over her shoulder.

"Get off me, you're heavy", Evelyn teased weakly.

While still feeling the plumpness of her body pressing against his, Rex steadies his breathing.

A couple of minutes passed as they both clamped together until finally Evelyn opened her mouth again wanting to let this go on but she knows she can't, "Don't you need to help me with the element rank problem? You also need to use the Succubus' corpses to help Ryze..."

"Hmm...", Rex replied in a soft voice before opening his eyes slowly.

Upon opening his eyes he saw a couple of notifications from the system already displayed clearly in front of him, and this makes him get off of Evelyn before sitting on the edge of the bed.

<The user's bond with the Luna has reached 100%!>

<Congratulation on gaining the Silverstar Pack Luna, the pack has grown stronger!>

<Upon becoming the Luna, Evelyn has unlocked the Luna Grace Effect>

<Luna Grace Effect>

The presence of the Luna of the Royal Black Prince brings grace to the entire pack. When the Luna is around the pack members or the Alpha, all of their stats will be increased by a fixed amount depending on the Luna's strength. Luna Grace will be activated at all times and will not take effect when the Luna is engaged in a fight directly.

<Evelyn's power has been detected at the Peak Sixth Rank>

<The Alpha has gained a fixed 1,000 physical stat points for each stat from the Luna Grace while the pack members received 200 points for each stat>

Rex reads through the notifications and finds a couple of keywords he finds interesting.

'Around the pack members or the Alpha, how far can Evelyn be separated for the Luna Grace Effect to still take effect? And the Luna Grace will not take effect when engaged in a fight directly, does that mean Evelyn needs to stay out of the fight to keep the buff activated?'

But even with the limitation, Rex is still happy with the result.

Werewolves are a race that revolves around the union of their pack members and their roles in the said pack. One Werewolf might still be a horror to fight against especially at night but it can't bring out the full potential of the terror brought by a pack of Werewolves.

Just like this Luna Grace Effect skill which revolves around the fact that the Luna will give a buff to the entire pack but has its own role to not join in the fight.

Rex nodded his head before he remembered the skill ticket that he got.

Upon reading the description of the Pack-related Skill Ticket that he got, he use the skill ticket to upgrade his Hunter Pack passive skill into Master Hunter Pack passive skill. The difference between both passive skills is the increase in stats where the latter increase 20% stats and also if a single target is surrounded by 5 Werewolves from the Silverstar Pack then its Endurance stat will be reduced by 15%.

It's a devastating passive skill that makes hunting in packs even more advantageous, reducing 15% of the target Endurance stat will make their defense lower and easier to kill.

After doing that, two arms suddenly wrapped around his waist once again.

"So, what do you have that can upgrade my element into the Ultimate Rank?", Evelyn asks resting her chin on Rex's shoulder with her long red hair falling down to the front.

Just as she said that Rex open the system's shop and filters through it.

While he was filtering the shop trying to find the perfect item that is compatible to upgrade Evelyn's element, Rex then suddenly said, "In the future, if we're in a fight I want you to stay back and let me and the others handle it"

"Can you do that for me?"

"Why... Does this have something to do with me being a Luna? or Are you just that possessive?", Evelyn asks tilting her head to the side while seeing Rex's serious face.

Hearing this, Rex gave out a light chuckle, "Just because you're a Luna, not me being possessive"

"Kinda hoping it would be your possessiveness, but alright. I guess a Luna doesn't need to fight, so I'll sit on the back looking pretty while cheering you in a fight", Evelyn replied nonchalantly before lying back on the bed tiredly.

But this sparks a glance from Rex, "Really now, looking pretty?"

"Oh? Should I recount what you just said to me earlier, something along you're so beaut- Mmph!"

"Alright, alright! Just shut up and be pretty, I'm going to take a shower first", Rex muffled Evelyn's mouth knowing that she was about to say something annoying, he then got up and head to the bathroom to rinse his sweaty body.

Evelyn who saw Rex go to the bathroom shouted, "Should I join you?!"

"No! I need to do something and you showering with me is certainly not helping", Rex shouted back before he locks the door to the bathroom making Evelyn laughs happily.

She was about to take her phone to check on something but stopped mid-track.

Now that Rex is not directly beside her, Evelyn's face becomes rosy once again as she remembered what she has just done with Rex earlier and how bold she was. She covered her head with a pillow in shyness, 'Why did I do that... it's embarassing', she thought.

It was like she becomes a different person, and she was even shocked that she can be like that.

But the more she thought about it, the more she got overcome by cuteness remembering the hot experience she has a moment ago, she then pulls the pillow tighter and can't help but bury her face in the bed.

About ten minutes later,

Rex got out of Evelyn's room already changed into a new set of clothes.

With the deeds he did earlier he now can see the surrounding in a fresher way, his eyes then shifted to the backyard remembering that Ryze is still there in pain, "System, should I cast Decimation Fervor to the Succubus corpses?"

<Red souls of the dead extracted by Whiro Necklace of Despair needs a vessel>

"What is the vessel needs to be?', he asks once again.

<Vessel to extract the red souls of the dead needs to be alive and is the being that killed them, the extracted red souls of the dead can be used to feed Ryze. Using a dead being as a vessel is forbidden and will provoke the Reaper beyond death, the system advised the user to not cross the forbidden path>

But this explanation makes Rex frown in thought.

From the explanation from the system, he can only extract the red souls of the dead from beings that killed them. Although the reverse order can be done, it's time-consuming and also will provoke whoever this Reaper beyond death that the system mention.

Thankfully, the Succubus' corpses have one thing in common that will make this process easier.

It's going to be easier but there's a slight problem,

'System... what happens if I use myself to become the vessel of the red souls of the dead?', Rex finally asks about the thought that has the possibility of extracting the red souls altogether.

Although he was not conscious when he killed the Succubuses, he's clearly the one that killed them.

In the city he was in before that is being infested by Succubus that consume the citizen one by one rather easily, it's clear that there's no powerful Awakened stationed in that city. Or at least the Awakened is not there, probably fighting at the Demon Stronghold.

Because of that, he's the only answer that can kill the army of Succubuses.

Just like the system said, extracting the red souls needs a vessel that is alive and the one responsible for killing them. Rex killed all of the Succubuses so, in theory, he can extract all of their red souls at once by using himself as a vessel.

The same goes when he's fighting Intuma before,

During the fight against Intuma, Rex used his new skill called Decimation Fervor which was produced by combining the Whiro Necklace of Fear and Amulet of Sorrow together. It's a skill that extracts the red souls of those who were killed by a targeted being.

Intuma killed many humans and upon using the skill, the wrathful red souls got extracted from the corpses and decimated him into a world of agony and pain until Rex finally showed mercy and kill him.

Remembering that sight, Rex gulps as he knows that he will need to go through that process.

<As long as the Malovelent Souls don't exceed 50%, the user will not be devoured by the red souls of the dead and be pulled down to the world of the dead along with them>

'What about 49%...?', Rex asks hesitantly, but soon his hesitation is justified.

<Below 50% malevolent souls retrieval will cause a hefty mental pain that exceeds the world of the living as this pain attacks one's soul, this process will keep going until the malevolent souls run out of energy to keep their physical body in the plain of existence>

Although in no way that this plan sounds good, Rex needs to do this.

Not only will Ryze be cured from his sickness and finally able to move once again, his soul will also become ultimately stronger and thus able to devour Zaddrass' soul and harness the power of the Lord of the Red.

It's one of the Heavenly Dragons, and having that on his side will become a tremendous boost.

Clenching his jaw determinedly, Rex then looks to the backyard, 'If it's pain we're talking about, I'm confident that I can go through it. Let's just get this over with'

Just a moment later,

"So what you are trying to say is that you're going to summon the malevolent souls of these Succubus corpses with your skill, using yourself as a vessel since you killed them, be ravaged brutally by these red souls while I try to contain them, and there's a possibility of yourself being dragged down to hell just to help Ryze overcome his sickness?"

"Yep, that's the plan..."

Edward is looking at Rex in utter disbelief upon hearing the plan to cure Ryze.

The more he recounted the plan Rex said in his head, the more he thought that it was absolutely dumb and very risky to the core. It's not just summoning an elemental or something, but Rex is summoning the souls of the dead!

"I'd say that it's a damn bad idea, this is a reckless man's idea", Edward rebutted firmly.

No matter from what angle of perspective, this plan is a very bad one.

"Don't worry, that jar can contain the red souls of these Succubuses. It'll probably only take a moment, so I'll be fine...", Rex said convincingly, but Edward know that it was directed to Rex himself rather than to him.

Surely Rex also thought that this is a bad idea, this is not mortal pain but otherworldly pain.

Even though his pain tolerance is very high, and probably the highest one there is. The pain inflicted by these red souls is not physical pain but rather mental pain that attacked the soul.

It's something that Rex has never felt before, and certainly will not be pleasurable.

While shaking his head still feeling that this is a bad idea, Edward readies the jar that he's holding that is big and shaped like a smiling demon face. It was the Jar of Everlasting Prison that was specially bought for containing the red souls that will be summoned.

The others are training on their own so Edward is the only one available.

But even if Gistella, Evelyn, and Adhara are free Rex wouldn't want them to be here, they definitely wouldn't agree with him doing this since this is a risky plan.

"Alright, here goes nothing..."

"Decimation Fervor!"

Swoosh!

Just as he chanted the Decimation Fervor skill, a gust of red wind breezes the surrounding.

All of the Succubus' corpses that are scattered and stacked in the back yard giving a very nasty smell suddenly got covered with red energy, and as if they were alive all of their heads turn towards Rex giving an imminent bloodlust that filled the entire air.

It's chokingly powerful and even Rex himself got caught off guard.

'This is a bad idea...', Rex thought realizing that it's completely different, the feeling is completely different than the impending physical pain. This one is a direct attack on his soul.

Slowly but surely, the red souls started crawling out of the corpses.

Roar!

Graah!

Astral roars that sound more like whispering than an actual roar filled the entire place as the red souls crawl out of their respective corpses exposing their featureless astral red bodies, their bottom halves are non-existent as they only have their upper bodies.

They all crawled on the ground with their claws like tortured souls straight out of hell.

But in the next second all of them started to fly like ghosts and instantly leaped to Rex which is in the center of these malevolent red souls. Upon the first red soul touching his body, he saw its claws go through him.

Rex widens his eyes upon seeing this but in the next fraction of a second, "RAARGHH!!!"

An insurmountable amount of pain suddenly tensed his entire body forcing him to look up and let out a painful scream, the red soul didn't touch his physical body but instead directly clawed his soul. And it didn't stop there, hundreds of others follows after and clawed his soul ruthlessly.

<Calculating Malevolent Souls...>

<13% Souls Retrieved!>

<10% threshold has been reached. The user is suffering from immense mental pain, all attacks directed at the user will be enhanced by 13%>

"GRAAAGHH!!!"

Without a doubt, the pain is even more painful than the pain that he felt in his entire life combined.

This level of pain exceeds the mortal realm as it's not a surprise now that Intuma, an Undead can scream and shriek as he did before. It feels like his entire soul is bleeding but there's no blood to be spilled, all of the pain is on his soul and it's unseeable.

Rex's eyes turn white feeling a ridiculous amount of pain, his veins are also bulging all over.

But a flash of memory went past his mind,

It was all of the memory of the unfinished business that he still has in his life, everything flashes past his mind starting from the night his parents died all the way to Rosie's death and the threat from the Supernaturals.

Suddenly, a surge of power brimmed from Rex's body powerfully.

Edward who was watching the scene in front of him saw the red souls attacking Rex's soul relentlessly, it was a gruesome sight but out of nowhere, he can see Rex's eyes comes back.

They were filled with the sign of life as he slowly lowers his head and tensed his body.

Although Edward doesn't feel it directly, he knows that it's certainly otherworldly pain to be able to make Rex scream like that. It's certainly painful but, 'How is he able to sustain that amount of pain...'

While looking at Rex, Edward finds that the red souls' attacks are not as effective anymore.

It's like he adapted to the pain so quickly, and that scene alone is quite terrifying as Edward saw Rex's body clawed and tormented by the red souls but still unmoving.

'He never failed to surprise everyone, including me...'

'Such willpower, I don't think anyone has willpower even nearing his...'