"I am the 'terrifying' incarnation of sin, The Devil.
I am the undying damnation who cannot yet settle.
With that fact, I am too greatly hated.
It's funny, I may just be fated,
To be hurled,
Into a world,
Where I am incarcerated,
As all great Seven Sins.
Yet, this is where it... begins."

"Talking" (Normally)
Thoughts/Talking in the Dimensional Gap
TaLkInG (Trihexa/Sin Form)
[Talking] (Ddraig)
:|Talking|: (Communication Spell, Phones, etc.)

.

- :|: - Degenerate x Surge - :|: -

.

Blinking, Issei found himself still within the Dimensional Gap. However, what caught his eyes was the Beast before him. What gave the Beast's name away, however, was the morbid aura it radiated; it was the same as the blackness he had spoken to. However, instead of blackness, Issei could make out a size that was larger than Great Red. It had seven necks, heads, tails and ten horns. It's body and limbs, if it was simply that, was composed of various animals and beings covered in various spots with midnight black fur—quite fitting for its title, The Forbidden Black Emperor Beast of Apocalypse.

The seven necks shifted, moving the heads towards Issei's direction when noticing his shifting—awakening.

ArE yOu ReAdY?

...Issei wasn't sure for what. Nonetheless, he nodded, albeit slowly, unable to find it in himself to speak in such a vile and suffocating aura.

HaH.

That sound confused him.

Do NoT LiE tO mE. yOu WiSh To SeE yOuR lOvErS.

Issei's voice came to him at that statement. He set aside the meaning the word of "lovers" and knew who It meant.

Does that mean I can—

No.

The Trihexa and Its aura shifted around him, pushing him, jeering at him, laughing at him—mocking him with Its many voices.

RiZeViM's MeMoRiEs SuRe ArE InTrEsInG.

Offhandedly, It mentioned Issei's antithesis. Hearing his name, Issei couldn't help but have anger surge through him as an electric-blue fiery wisp materialized above a horn and flickered with what he supposed were images of Rizevim's memories. Even under the oppressive aura, Issei found himself unable to steady his anger at the almost bored mention of the Super Devil. It was Rivezim's fault that the whole world was in the mess in the first place! I-If Rivezim Lucifer didn't exist, none of his problems wouldn't even be considered. Vali—though Issei didn't necessarily hate him—wouldn't have been born, sure, but most of the world's problems probably wouldn't exist!

I wOnDeR, wHaT wOuLd HaPpEn If I gAvE tHeM tO YoU.

...What?

He NeVeR aCtUaLlY DiEd, Ya' KnOw? He WaS gOiNg To SiT iT oUt AnD wAtCh HiS wOrLd CrUmBlE.

T-That sick Fuck! Issei couldn't believe it. After everything he has done, after he and the world has gone through, he still did not die?!

—So I kIlLeD hIm.

That revelation shocked Issei enough that his mouth fell open.

LeT's StArT.

That was Trihexa's only warning before Rivezim's wisp entered him.

...Issei couldn't move, feel or anything. His senses were thrown into a loop, switch off and on at various and irregular periods. His vision blurred so the around him looked even more dream-like than ever. He wasn't sure what was happening until it happened. He tried to move, feeling sick as he felt cold, despite having a flame enter his soul. He began shivering, in such a cold, he actually felt hot—burning even. While his physical draconian body was, in all purposes, dead, his mind went under a fissure attack, gaining memories that weren't his own as he felt to his knees, still shaking. Then, ultimately, he fell onto his face, looking as if he was having a vicious spasm.

He wasn't Issei anymore.

Energy—power—surrounded him but it wasn't his—or was it?

"I am Rivezim!"
"I am strong? —Yes! Yes, I am strong!"
"But it was just so... boring."
"Let's... Let's bring the—END."
"HAHHAHHA—Cough—HAHAH!"

...Issei's eyes widen. Those words... they weren't his own but he couldn't help to agree with them because at that moment, they were his then. He was confused as he was conflicted as to who he was. Anger was one of the main emotions that surged through him. There was no way that he of all people would agree to such words! However, after that moment, he felt so—relieved, like he was accepted something that made him desire more. His hand twitched, but he didn't know it wasn't because the burning cold.

His mouth fell open, as a soundless scream echoed nowhere. His hand had become deformed and his inwards of his hands shifted so horribly that they burst—exploded—from his hand. Until it shot right back into gory mess where his—whoever he was then—hand should've been.

The hand's skin was now pale in spots that looked like scars. Some parts of his fingers weren't same size as they were before. Some were mutated in size or angle to look like a freak accident occurred.

*Sppplliish*

Just his hands, his entire body followed. His inwards became outwards; the Beast watched on with a slight curiosity. As suddenly as it left his body, his gore returned, leaving patches of something—someone—in various parts of his body.

The new person had two hair colors. Brown from the original body and, in many places, silver white after the transformation. His skin tone was now either pale or a light tan in random places as if he had a odd skin deformation. His arms were of uneven sizes much like the fingers that was much like a prologue to this... shift. His face had changed the most and that said a lot compared to the rest of his body. His face was angular like Rivezim's but it still retained it's boyish look from the original person. However, that was until one would look at the deformed nose which tried to combine the shape of the said persons' noses. The eyes were strange as they retained both colors in various spots, uneven between the eyes and one eyeball even had two pupils.

All in all, he was an abomination that was like... the Beast, on a much smaller scale.

ThIs... Is InTrIgUiNg.

With a sick sense of curiosity, more wisps appeared atop its heads and shot forth towards the motionless thing.

Those wisps... They were his enemies, and, yet, they were his friends.

"Issei-senpai, I-I'm s-scared!" Gasper's vast devilish-energy pool had become his as his body went under another change among changes since he had not one flame enter him, but seven.
"Sword Birth!" Yuuto's skill and abilities had been engraved into him as hard as they been onto Yuuto.
"Darling—Let's practice!" Xenovia's memories and affinity with swords were his. And he was now Five.
"Issei-senpai, you pervert." He gained Koneko's desire and strength, his mental state thrown into fluctuation.
"Ufufufu, Issei, you make me so... hot." Akeno's tendencies and amplitude for magic was now his, whoever he was then.
"I-Issei! I w-want a k-k-k-kiss t-too!" Asia had also followed, awkward urges and grace appeared into him.

The last one stopped before him.

He, unsure who he actually was, stared at the flickering wisp.

It showed her. Rias.

Her wings had been out as she had been practicing various aerobatics along with her Bael powers since she felt bad that Issei was almost literally carrying them in battles. However, about to jump, her wings—exploded, causing her to yell in shock and pain as she fell. Disbelief had fallen upon her as her wide eyes stared at the morbid mess of her twisting and shifting wings. As suddenly as his own transformation, the gore leaped back and reconstructed then reconnected itself as angel wings. The memory began to fade into another as it ended with a wisp leaving her.

And with that, it entered him.

"Ise—I love you!" Just like the rest, he had become Rias and yet, feeling less empty—desiring more.

ThIs Is KiNdA fUn.

Trihexa didn't let up and gave him no more warnings or pauses. One after another, wisps from the devils of the past, present and perhaps even future entered him. He had seen the Great War and yet, at the same time, he had only just been born. He had so much power, he didn't know what to do with it, and yet, he had barely any enough for a teleportation circle. He had been so corrupt, he started a Civil War among Devils, but so kind, he sacrificed everything he had to protect those who couldn't protect themselves.

He had become... Sin.

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- :|: - Surge x Spurious - :|: -

.

Fading into consciousness, cold, barren from head to toe. Oddly, it didn't affect him, but the area around him barren like a wasteland, and ashes of something dead did. And the strange black aura that surround him, he barely noticed as it didn't affect his sight.

He swung his hand to dispel it since he usually did that either as he used or after using [Balance Breaker] but instead, the aura dispersed in the path of his arm and a black and mystical crescent-shaped slash drove forward.

"...HuH?" What exactly had he just done? He has never done something like that before. It was easy too, but uncontrolled.

He swung his other arm, feeling oddly encouraged as he imagined yet a bigger slash.

*Vvrrrrmmm!*

And bigger it was, as it tore a distortion into the brown sky. He was awed at his powers once more. Suddenly, he blinked as if he felt strange. Something was bothering him at back his mind.

*Ffsssh!*

A portal opened above him, allowing various winged beings to teleport. Issei stared as they surround him, white feathers littering the area around him. They seemed to hypnotize him with their strange and mystical dance.

Follow their white-winged counterparts, a storm of other winged beings arose from the horizon, somehow catching his attention. Their march was akin to a black wave as they came towards—him?

What's going on?

A ray of light struck his way like lightning but was unable to penetrate his aura, leaving him unaffected. It caused him to look back towards the portal, watching three white-winged beings and one golden-winged and fairly familiar creature to appear.

"M... MiChAeL?" Everything, even the on-marching black wave, flinched at his words, and he, whoever he was, was oddly worried at the sight.

Where am I?

No one said anything, and the lone angel with a golden back glanced towards the on-coming wave of similar beings. It seemed to Issei that they were waiting for the similar beings to reach them. Once the black mass came towards the Angels, a Fallen with black hair and a golden fringe left his group to meet up to the golden winged Angel, Michael. Azazel-sensei... After moments of talking, Issei stood confused as they parted; Angels began to move to his right and the Fallen to his left.

"Aim!" The lone golden-winged person threw up an arm, as energy began collecting in its grasp. "Ready!"

They... Something occurred to him. ...don't remember?

[!]

—His red eyes widened and a headache caused him to tremble, affecting his aura into flaring wildly. His vast blackness swallowed various Angels and Fallen. Their morbid screams failed to reach his ears but not their kin's ears. Many of them disregarded the wait for the signal and tossed colored spears.

[—PARTNER! Get your power under control! NOW!]

...I can't...

He, still unsure who exactly he was, was trying. He really was but it did nothing as he was still unused to his absurd amount of power. When he went to pull his aura in to stop it from swallowing more people—it did the opposite. Quickly, he had withdrew his hand and curled up. He was afraid of moving—hurting people by accident. He could only hope that they would leave him be.

[Partner! You are—Issei! You need to move!] A spear made of the combined efforts of the leaders of the Grigori, and God's Heaven struck against his vile aura. However, unlike the others, it actually pierced his black aura. Slowly, but surely, it inched closer.

[If you don't, you won't see... any of—them, like you wanted, right?] Ddraig's words finally gathered a reaction out of him. He flinched. [Look, I'm not like Albion, I can't filter power like him. However, I know someone who can help, alright?]

Slowly, his true memories were beginning to resurface. He originally was Hyoudou Issei. Ddraig was his partner inside the [Boosted Gear].

I'm tired...

Ddriag paused, hearing his partner's hollow thoughts. It lacked its usual emotion and conviction. He wasn't sure what exactly Trihexa had done to Issei as he had been unable to hear Issei's thoughts, memories for a while, but he got the gist of it. While he could do it now, it wasn't the right time to do so. Perhaps, later when they away from attacks. [Partner, you need to make a portal for "Familiar Forest." I'll tell where to go from there.] Ddraig sighed, hoping she would help him. If not, then perhaps, they could find the nekoshou sisters. Nonetheless, Ddriag needed to help Issei to control, or at least, withhold his powers. Ddraig definitely knew how to do so as he also had done so with his vast powers before being sealed in a [Sacred Gear]. Although, not on the level Albion could do so, he would give his eternal rival that much.

A-Alright.

- :|: - Spurious x Prolix - :|: -

\_(◕﹏◕)~

Vorpal: ...Would you like to see an Anti-Hero Issei?
Originally, I wasn't going to do that, but it's plausible for Issei to act that way with what I'm doing anyway. I did do something similar to a favorite anime of mine, Charlotte as you saw with the whole clusterfuck of memories and powers, which is similar to Yuu's clusterfuck of powers. Hence—Surge.

So basically, every pure devil became either an Angel or Fallen. The rest returned to their state before being reincarnated. So Koneko, and Kuroka are pure nekoshou and everyone (Akeno, Yuuto, Asia, etc) else reverted. Hence—Degenerate.

Immediate Pairing(s): ...Tiamat, Kuroka, Koneko, Kunou, Raynare, and perhaps, Akeno

To be honest, I'd rather use OCs with SOME elements of other characters than use crossover characters, so please don't suggest any.

This was the rewrite of Not Angel, Nor Devil, but the plot was changed due to lost documents and the latest translated LNs.

Editing: Some?

...And it's actually harder to do the Trihexa speech thing than it looks. Perhaps, it's because I'm weird like that...

[Words: 2,543]

"Have a Nice Day"

This story was in originally inspired by:
"The Devil is a Part-Timer!/Hataraku Maou-sama!"