Magic Core

CRACK

What was that sound you may ask?

Me neck chopping Issei's neck, while he was reviewing some porn in his bedroom.

Why?

Because, I want to use Ddriag to give me a Dragon Heart.

I don't really care for the booster gear.

But I do care for an absolutely massive increase in magic and rebuilding the foundation of my own magical circuits.

I grip the unconscious Issei's shoulder and teleport to one of my random safe houses.

FWISH

I 'fly' to an abandoned warehouse I set up a couple years ago.

This is one of the ones I set up in case I need to do some 'dirty' work.

I strap the unconscious Issei to a chair and tightened leather straps banding his arms and legs.

Now here comes the plan.

"Trace On!"

Soon a neon outline surrounds my face before fading away, leaving a menacing white mask with a outstretched smile and 2 yellow horns pultruding the sides.

This is the 'Shinigami Mask' that Orochimaru used during the Fourth Shinobi World War.

It can control the Shinigami used during the Reaper Death Seal.

Which is exactly what I am going to do,

[Snake]

[Boar]

[Ram]

[Rabbit]

[Dog]

[Rat]

[Bird]

[Horse]

[Snake]

"Fūinjutsu: Shiki Fūjin!"

CLAP

A faded ghost in the outline of a Shinigami appears behind me as I begin to instruct it, causing the Shinigami to begins to pull on Issei.

Soon enough, his soul is revealed.

The soul is pulled out starting from his right arm, where a red orb is seeped deep within.

The Shinigami reaches out and pulls that portion of the soul separating the red orb from Issei's soul before implanting it on my own.

I release Jutsu and the Shinigami fades away. I hold up my right arm before the Red Dragon Emperor's Gauntlet is finally revealed in a green flash of light.

[[HOW DARE YOU RIP ME FROM MY PARTNER!!]]

Yells out a deep tyrannical voice from within, now I probably would have been scared normally but, I had the memories of going toe-to-toe with the nine tails and defeating Calamity Ganon, a being that is literally malice incarnated, so I wasn't that intimated.

"Calm down, let me speak!"

[[SPEAK, QUICKLY!!]]

"Alright, alright, chilllll, I'm going to put you back into your partner in a bit, I just need you to do me a favor."

All I get in response is a cold snort.

[[CONTINUE.]]

"I need you to change one of my body parts into a dragon part instead."

[[AND WHY SHOULD I DO THAT.]]

"Because, if you don't I'll remove you from the sacred gear altogether and make sure your soul is trapped for the rest of eternity."

[[...]]

Haha, pretty intimidating if I do say so myself.

"Don't worry I'll put you back into your partner afterwords."

[[FINE.]]

"Alright, I need you to change my heart into a dragon heart."

[[...YOU WILL MOST LIKELY PERISH.]]

"Don't worry about it, and just continue."

[[...FINE]]

I wait to feel the burning sensation when Ddraig speaks once again,

[[WHAT IS WRONG WITH YOUR BODY?! WHAT IS ALL THIS ENERGY?! WHAT IS THIS MAGIC LINING ALL YOUR BODY, THE IMMENSE HOLY ENERGY?! SO MANY SWORDS?! AND THAT FEELING NEAR YOUR ST—]]

"Just hurry the fuck up! And stop snooping my body!"

[[...]]

[[YOU DARE—]

"Yes I fucking do! Now hurry the fuck up!!"

[[HMPH...FINE]]

Soon enough I started to feel it, like every cell in my heart was being eviscerated then rebuilt back up again.

The pain was unbearable and I could barely hold out without losing consciousness. Soon after what felt like eternity the pain started to fade away and the dragon heart stabilized.

"AHHHHH!!!"

The pain quickly returned on a new level as the new dragon heart's mana seeped into my magic circuits, brutally expanding them and enhancing them.

They were being broken down only to be built back up in a new level, if I didn't have Avalon's regenerative abilities, I don't think I would have survived.

"Huff....Huff." I laid on my back heavily breathing in air.

"Hahahahahahahaha!! It fucking worked!"

[[WHAT IS ALL THIS?! HOW CAN THE HEART EFFECT YOU SO MUCH?! NO, H-HOW ARE YOU ALIVE?!]]

"Hehe, none of your damn business."

I proceeded to cycle through familiar hand seals.

CLAP

"Fūinjutsu: Shiki Fūjin!"

[[WHAT IS THAT?!]]

I ignored Ddraig's questioning and pulled his core from my soul.

[[WHAT ARE YoU DOinG—?!]]

I then proceeded to pull out Issei's soul once again before implanting the red orb back into it.

I then released the Jutsu and unstrap Issei from the chair before teleporting him back home.

I tuck him into bed before teleporting home and laying on my own bed.

The Shinigami Mask on my face fades away to reveal a bright smile,

"Haha! It actually worked, yes!!"

I no longer have Magic Circuits, now like Saber, I have a Magic Core and dragon blood flowing through my veins.

If before, my magic circuits were like a cheap Chinese factory, now they are like a top of the line nuclear power plant.