Vile Evil Hides Under The Veil

Authority: Domain of Wrath

Authority: Domain of Greed

Authority: Domain of Gluttony

Authority: Domain of Pride

Authority: Domain of Envy

Authority: Domain of Lust

Authority: Domain of Sloth

All seven types of Sin Series Mana were injected simultaneously into both Reen and the demonic saber.

In the case of the demonic saber, the six types of Sin Series Mana were intended to suppress Samael's soul fragment. The seventh Sin Series Mana type, Wrath Mana, was used to nullify Samael's Authority.

The Sin of Lust Mark had not granted Eren a domain-type Ability earlier. However, even that was changed when Eren successfully inherited Aleph's divine throne.

However, the seven types of Sin Series Mana had a different role in Reen's case. They were utilized akin to the divine flames, to temper Reen's form so that she could be compatible with all seven forms of Sin Series Mana.

Samael's soul fragment, embodying the alter ego of Demonmir, became helpless once again. His Wrath Domain was eventually obliterated when overridden by Eren's Authority.

Eren sensed that the demonic saber required more from him. Or rather, he needed to ensure that it surpassed his expectations.

"Hmm. If I want to create artifacts that can evolve with me, I need to integrate them with myself."

Eren mumbled as he closely observed the artifact creation process. As the new runes were added to both Reen and the demonic saber's forms, Eren began planning last-minute alterations to his creations, aiming to break the mold of regular artifacts and create something unique to him.

"Here, take this!"

Using Rigor Mortis, Eren promptly severed his left arm without hesitation and flung it toward the demonic saber. Gritting his teeth he held on and snapped his fingers with the other hand.

The butcher used his A-Ranked bloodline powers and Instant Reset to instantaneously regrow his severed limb. His slime-like constitution and his existence as a divine entity were increasingly evident as he ascended the Ranks, making the regrowth of a severed limb a seemingly effortless process.

Had Eliza been in the right frame of mind to notice Eren's actions, she would have been shocked to witness how effortlessly he regrew his limb from nothing. While she and Layla had to pay a price to reattach her severed arm, Eren's display showed that he was nearly an immortal being at this stage. At least when it came to butchering one's self up and still coming out unscathed in the next moment.

***

Eren's severed limb, now a mass of slime-like essence, adhered to the demonic saber. The blood inside the chopped arm, Elder Ichor, was absorbed by the saber, intensifying the glow of its runic engravings.

The essence of Eren's arm profoundly transformed the foundational structure of the weapon artifact while maintaining its shape, almost as if imbued with some of Eren's bloodline properties.

The demonic saber cracked the ground around its Array Eye upon Samael's domain cancellation, emanating a stabilized form with a wrathful aura, coated with bloodthirst and vengeance.

At this moment, a previously unseen Elder Seed Artifact took the shape of a black saber. Unlike Reen's case, Eren easily subdued Samael's soul fragment due to the legacy ownership obtained from Aleph.

The creation of the demonic saber, relatively speaking, gave Eren fewer headaches in the artifact-creation process. Eren was less obsessed with making a demonic saber out of Samael's soul fragment. He was even content with the failure in Samael's case, treating it as a mere option rather than a necessity.

Occasionally, endeavors that received less attention turned out to be artistic masterpieces. Such was the case with the demonic saber. Eren's side project proved to be a major success while his primary project was still in progress.

Eren's intention to create the demonic sword, housing Demonmir as the artifact spirit, stemmed from his lack of trust in Demonmir not causing trouble in the future. Eren anticipated Demonmir's possible return, as Demonmir himself had mentioned before his demise.

Though Eren was no longer worried about Demonmir, he found it wasteful to let powerful enemies make comebacks and disrupt his progress.

The butcher was a firm believer in the fact that certain issues needed to be eradicated from their roots. After all, if one's opponents made a comeback even after being beaten, the responsibility of the comeback lay in one's inability to get rid of their "problems" completely and permanently.

'Demon Prince of Wrath, Samael. That demon better stays away from me. Otherwise, I'll have to find a replacement before eliminating him as well.'

Eren contemplated as he observed the demonic saber. He smiled wickedly when the process of the saber creation finally finished.

Eren raised his right hand, and the saber instantly flew into it. Upon touching it, he sensed boundless wrath and hatred emanating from the artifact spirit. This appeared to be the first Elder Seed Artifact that detested its creator.

"This saber… it is angry… It hates me," Eren chuckled as he gripped the hilt and wielded it a few times.

"Even better, I'd say. I'll be able to channel my Wrath Mana even more efficiently. Kekeke. Hate me more. Stay angry, you dimwitted bastard!"

Eren said while swinging his sword around casually. 

"Hmm? What shall I name you? My father's sword was named Sura. So I will call you Asura. Though, I don't think a motherfucking bastard like you deserves such a cool name. Kekeke!"

The weapon screeched in Eren's hand when it heard Eren's words. However, it was unable to break free from Eren's grasp.

"Aaah! You poor soul. How can the world be so cruel, right?

Alas! There's no way for you to break free from me. So you might as well accept the reality you are in. Alright. I'll play with your angry ass later. You are not that important to me anyway."

Mocking Samael's soul fragment now transformed into an artifact spirit, Eren merged the sword into his arm, fusing it back into his flesh.

A runic tattoo of a saber appeared over Eren's arm as he assimilated his newest Elder Seed creation. Given that a part of his flesh was utilized in its creation, the sword could dissolve into Eren's flesh and detach itself at his will.

Eren wanted to learn more about his creation. However, the present moment was not suitable. His side project concluded smoothly, but his primary project was still causing him a bit of trouble.