Prologue: Ente Isla

Opening his eyes, Alex was surprised when he find himself sitting in what seem to be a throne, in a dark and incredibly wide hall.

"Huh?" Letting out a confused voice, he blinked his eyes as he tried to process what just happened.

As far as he knew he was test driving his newly bought Lamborghini Aventador. Damn was it a good night drive.

He remembered that he was being chased by several police cars—well he doesn't really care about them, as long as he didn't accidentally killed people he can just ask his old man to—.

"Grgh?!" Alex held his head tightly, gritting his teeth in pain. A series of memories accumulated for hundreds of years came crashing in.

His head feels like it was on the verge of exploding. A dark crimson aura leak out of his body, causing the entire room to shake and darken even further.

Cracks started appearing on the floor, and the windows shattered.

After a few minutes, the headache he felt subsides, and the aura leaking out of his body has been retracted back. Taking a deep breath, Alex lifted his head to look at the ceiling.

"Great Demon King; Satan." Alex muttered.

"That's my name from now on?" According on the memories he received just now, he took possession of the body, power, and memories of Satan from the anime The Devil is a Part Timer.

And it seems like he was still in Ente Isla, and the Hero already "killed" three of his generals and is already headed here in the Demon King castle.

The only one remaining of his generals, Alsiel, is also heading here to assist him.

It was a good thing he watched the anime and read the manga, though its a shame he didn't read the novel.

Hey, he might be rich, greedy, and somewhat spoiled guy, but he does like to watch Anime once in a while instead of fucking some bitches.

Actually the reason why he came to like Anime is when he tried to court this girl who was an avid fan of Anime and Games.

Who knew that he'd actually love it.

With a sigh, he covered his face with his left hand. "So I really died back then huh? Damn, who knew I'd crashed into a Truck. Oh well, at least I didn't get ran over by a truck, so that's a plus."

[Hello, Alex Xander]

"Who's there?!" A male voice resounded, Alex immediately used Magic Sense to searched his surrounding, but found no one.

There is literally no one inside the Demon King castle aside from him.

[Mah~ Mah~, no need to be so cautious. I'm actually the one who brought you to that place]

With his eyes narrowed, Alex decided to listen to the voice talking to him. "Hmm, well go on."

[Ahh~ Okay, so I brought you there because I find you interesting. Ever since Truck-kun came into being, you are the very first one to actually 'ran over' him while he was on a mission]

Alex blinked. "Huh?"

[Ahaha! See?! That's my reaction when I saw you do that too! Seriously, Truck-kun was actually on a mission to send this boy to another world, but you interrupted him when he you crashed your car into him! Its the first time it happened! Hahaha!]

"Just get to the point." Alex demanded with an annoyed voice.

[Ahaha! Okay, okay, sheesh, all of you are such a kill joy. Anyway, I'm sure you'll be glad to hear this part; I'm going to give some gifts! You can ask for three gifts, it doesn't matter what it is, skills, items, pets, as long as that something does not go beyond a certain limit, I can give it to you. Isn't that great? Right? Right?]

"Seriously?" Alex was really a bit doubtful. From the tone of his voice, he sounds like someone who's full of mischief.

[Yeah, Yeah. I was actually the one assigned to give gifts to the boy that Truck-kun was about to send before you interrupted him. So I thought "Why not just give you the gifts?" so here I am. Now, tell me what you want]

Even though he's still a bit doubtful, Alex decided to just accept the gifts. "Well, for the item, then I guess you can give me the Black Imperial Sword: Judecca, of course you need to modify the requirements so that I and only I can use it."

[Judecca huh. Hmm, if I remember it correctly, its from "that" world right? Okay, wait for a bit.....Done, now here you go]

Suddenly, a black aura appeared in the hall, though it only lasted a second before disappearing, leaving behind a black sword floating in front of him.

It was a longsword consisting of a jagged blade with a hook at the tip. Inside the crossguard contains a round gem, and attached to the pommel of grip is a long skeletal lanyard.

With a smile, Alex extended his right arm, and reached out for the sword, grabbing it. At the same time, the skeletal lanyard encircled around his right arm before stabbing it.

Almost immediately, he heard a feminine voice coming from the sword.

{"Alex Xander Soul Identified" Activating Judecca}

{First requirement "Demon King Physique Identified"}

{Second requirement "Demonic Force Identified"}

{Third requirement "Demon King Bloodline Identified"}

{All requirements met. Good morning, my Demon King}

With a grin, Alex stood up from his throne and tried to swing Judecca in front of him—causing a large fissure that split the floor in two.

And with another swing, the whole hall was restored almost immediately. Even the shattered window and cracks were repaired as if they were never there.

Sitting back in his throne, Alex carefully observed Judecca. 'Not only can I channel magic into her, but it also cost less Demonic Force and is even much stronger.'

"Judecca, can you turn into a pendant for now?"

{Affirmative}

Judecca released a soft life and shrank before wrapping herself into Alex's neck as a sword-pendant.

"Now, I got a weapon of a Demon Lord used for destroying worlds. Next up is a skill." Alex looked up at the ceiling and smiled, "So, can I ask for a skill now?"

[Sure, sure. So Alex, tell me what Skill would you like to have?]

Alex gave a grin, "One of the skill of the most Over Powered Slime Demon Lord in existence, I want the Origin Skill: Magicule Breeder Reactor."