A/N: This is quite rare for me to write a crossover fanfiction for any other anime rather than DBZ. But I can't help it since Overlord is freaking awesome! I don't know how popular is this series in fanfiction but i will give it a try. Anyways, this story contain heavy spoilers from Light Novels so I warn you right now, read at your own risk.

CHAPTER 1: INTO A NEW LIGHT

How long has it been?

How long it had been since he stopped being a human?

How long it had been since he was trapped in an alternate reality of a game which was long been shut down?

Quite honestly, he didn't remember. But one thing he was sure about was that his human body would be a rotting corpse by now.

But it didn't matter to him. He was now Ainz Ooal Gown, the supreme being and ruler of all Nazarick. All his human emotions and connections were distant memories of the past.

"Ainz-sama, everything is ready as you demanded."

A feminine voice seemed to pull him out of his thoughts. It wasThe Overseer of All Guardians and the beautiful succubus, Albedo.

"Excellent work, Albedo. I thought it would have taken longer but you exceeded my expectations." complicated Ainz.

But he immediately regretted that as the succubus shivered and moaned in excitement hearing the compliment.

This was the daily reminder of his mistake to interfere with Albedo's and game's default setting. But it wasn't a game anymore. It was a real world he was living in.

"Ainz-sama, while Albedo did an outstanding job, I want to ask that if this spell will really work?" asked the guardian of 7th floor, Demiurge.

The question earned him angry glares from his fellow guardians and Pleiades who were kneeling next to him.

"Demiurge! Are you questioni-"

"It's alright, Albedo. Demiurge, I understand your concerns regarding the spell and safety of Nazarick but i have made sure that spell won't damage the Great Tomb of Nazarick at all." told Ainz.

Demiurge simply smiled and nodded at this.

Ainz could not blame Demiurge. Using a new prototype of super tier to move Nazarick was a gamble.

But leaving Nazarick in open area was even more dangerous especially when they were planning to make Great Tomb of Nazarick a separate kingdom of its own.

"Does anyone here has any objections on moving Nazarick?" asked Ainz looking at all th Floor Guardians and Pleiades Seven Sisters.

But he was met with silence. Even if Ainz was their master, he still cared deeply about the opinions of every member of Nazarick.

"Well, then let's begin. [Super Tier Magic: Legis orandi Teleportation]"

The next moment, earth beneath them shook violently before the entire Nazarick was engulfed by a white light.

As the bright light disappeared, the first thing that Ainz saw make him sigh in relief. All of the members of Nazarick were still there unharmed. Looking around himself, Ainz noticed that besides the violent shaking, Nazarick too didn't suffered any damage.

"It seems the spell did worked." mused Ainz.

With a flick of his fingers, he instantly summoned the Mirror of Remote Viewing to view the nearby area. It was most logical move to do afterall.

He didn't want to attract any unnecessary attention.

What he was saw through the mirror almost surprised him as much as when he was teleported to the New World.

It was a city. A modern time city with cars and lights instead of medieval cities of New World.

'Where are we? This is certainly not New World. Are we back to my world? No, this can't be. How am I still this body?'

"Ainz-sama, what are these weird creatures among humans?" asked Albedo curiously.

When he turned his gaze where Albedo was pointing, he realized she was referring to cars.

"Ah...these are called cars. They are actually a means of transportation much like horses but are basically not living." replied Ainz.

"So they are undead?" asked the female twin elf, Aura.

"No, that's not what I meant."

"They are like golems then?" asked Cocytus.

"No, not exactly."

"So they are machinery." said Demiurge.

It was really impressive how Demiurge and Albedo knew what exactly he is thinking but it was expected from the most intelligent beings in Nazarick.

"Yes, exactly. This is a basically a complex and advanced form of machinery made my human beings." told Ainz which earned him more curious gaze from his servants.

"I thought only Dwarves are capable of building such machinery but to think human beings too are now able to create things like that, it's quite impressive for low life forms like them."commented a pink haired girl..

It was Shalltear Bloodfallen. The strongest of all Guardians.

Instead of wasting his time explaining them about cars, Ainz decided to analyze his current situation

"It seems that instead of teleporting us to a secure area of New World, the spell transported us to entirety different world." said Ainz.

'This is bad! Really bad! If we are teleported to a normal world then our presence will cause an uproar and attracts even more attention than I want!'

"Ainz-sama, I would like to take command of Rubedo and survey this city." Albedo asked bowing in front of him.

"I refuse."

The reply came in an instant. It almost seemed if Ainz already knew Albedo was going to ask for it.

"We need to be careful about this new place. I don't want any of you get hurt because of my carelessness again." told Ainz.

It was true. Even if this world looked like normal human world, he still couldn't afford to be careless and send Albedo especially with her sister Rubedo, the strongest individual in Nazarick.

"For the time being, I will look into the city through the mirror. If everything looks fine, I will myself go there."

It took him an entire hour to survey the entire city and so far it seemed like any other typical city.

Deciding that it was just a normal city, Ainz was going to close the mirror but then he saw something unusual.

There were few high school students fighting in an abandoned church. Ainz wouldn't have give it any attention if it weren't for the fact that they had demonic and angelic wings on their back and seemed to be using a different type of magic than him.

A black haired woman with black feathered wings was fighting with a brown haired boy wearing a red gauntlet. The batte seemed to be favouring the girl but soon the boy defeated her with the help of his gauntlet on his left arm and was later joined by other devils.

It seemed that this wasn't just any ordinary human world after all.

Activating another ability of the mirror, he was clearly able to hear what they were saying.

ABANDONED CHURCH

"Now then, I'll finish my last work."

The redhead demon girl's eyes became sharp and she looked ruthless towards the dark haired fallen angel.

Damn it all! She was supposed to retrieve that gear for the sake of her kind. It was supposed to give her race an advantage over angels and devils if a war starts again.

Rias got close to Raynare which made her almost flinch. Not because of fear of dying but because of her failure.

Sure she was afraid to die but dying without achieving anything for her race was even worse.

"I will have you disappear, Fallen Angel."

It was a cold tone. It was filled with killing intent.

"Of course, I will retrieve that Sacred Gear back as well." said Rias.

"Y-You can't be serious!? This healing power is for Azazel-sama and Shemhaza-sama—"

No! No! How dare that bitch taint it with her own hands! This gear was far too valuable for low level devil to even look that, much less obtain it.

"To live your life for love is beautiful. But you are too tainted with dirt. You have no elegance. And I don't allow that." told Rias cutting her mid sentence.

Love? With a pervert who might fall in love with every other girl? This pampered devi bitch herself didn't have slightest idea about love. Pathetic.

The devil girl extended her hand towards Raynare as she would kill her in one blow.

"Me, here."

Then, a shadow appears from behind the broken wall.

The Priest—, Freed Zelzan.

It's that shitty Priest! He came back despite running away once! Finally this idiot would be useful for once!

"Wow! My superior is in serious danger! So what's going to happen now!?"

Raynare screamed at the appearance of the Priest:

"Save me! If you save me, I will give you a reward or anything you want!"

Freed makes a sadistic smile.

"Hmm, hmm. I received a wonderful order from an Angel-sama. Eh? So I can have sex with you? To me, having sex with an Angel-sama is like the best honour and it will become a good social status for me."

If Raynare would not be in a life threatening situation, she would have tear that priest's face off. Why was she always surrounded with perverts?!

"Ku… D-Don't fool around and save me!"

The Fallen Angel's expression was filled with anger. She would rather die rather than to sell her dignity like that even she was concerned.

"A mere human won't betray me".

"You know that I'm actually serious… I mean, something simple like that should be all right, isn't it, Angel-sama? So it's a no? Is that so? Then I will take my leave now. No matter how you look at it, I'm at a disadvantage, so I will just take off."

Freed said it in a funny tone while curling his body.

"Y-You are a Priest, aren't you!? You are supposed to save me! I'm an all mighty Fallen Angel! I—"

"I don't need a superior who loses to trashy Devils. You are pretty, but you lack plans and you are hard headed. Well, a Fallen Angel who is abandoned by God won't go to either Heaven or Hell, but goes back to nothing."

After saying that, he moved his sight elsewhere, as if he has lost interest in Raynare..

Freed makes a big smile at Issei.

"Issei, you have such a wonderful ability. I'm getting more interested in you. You are so worthy to kill! Next time we meet, let's have a romantic fight to the death, okay? "

Freed disappeared immediately from the scene after waving his hands at them.

With that, Raynare put on an expression of despair.

This can't be happening. She was supposed to receive help from her fellow fallen angels by now. They promised they would help her. But why weren't they here?

Was she so weak to be turned down by her own kind? The ones for whom she went through all of this?

How could she be so stupid?

"I have other fallen angels coming for my help" warned Raynare.

" Funny if they really cared about you as much you did for them, they would have been here by now already. Now, Fallen Angel Raynare, who was abandoned by her own servant. Miserable."

The devil leader didn't have the slightest sympathy in her tone. Raynare started to shiver.

Raynare then looked at Issei. She then makes sorrowful eyes at me.

"Ise-kun! Please save me!"

Her voice was that of Yuum, when she was his girlfriend.

"This Devil is trying to kill me! I love you! I love you so much! That's why, let's defeat this Devil together!"

Pathetic. No, it was beyond pathetic. But what other choice she had? Betrayed by her own kind. The one thing she was happily ready to die for was just a lie.

"Goodbye, my love. Buchou, I'm at my limit… Will you please…"

Hearing that, the Fallen Angel's expression froze.

"…Don't try to flirt with my cute servant. Blow away."

A large sphere of demonic-power shot by Buchou left nothing of the fallen angel.

NAZARICK

Just before the sphere of energy could hit the fallen angel, Ainz immediately used his spell.

"[GATE]"

Using his superhuman speed, he pulled the girl from her certain death.

The girl had her eyes shut the entire time waiting for the attack to obliterate her but it never hit her.

Ainz saw the reaction of girls changing to relief when she realized she was still alive to that of panic when she looked at him.

"An...elder lich?"

This seemed to angered all the present members in the throne room.

"How dare you compare Ainz to a mere undead lich?!" asked Albedo angrily.

"I should behead you right here" said highest level Pleiades, Narberal Gamma, unscathing her sword.

"It's alright. There is no need to punish her on something she is oblivious about." told Ainz signaling them to calm down.

"Who are you? Where am I?" asked the girl.

"You are currently in The Great Tomb of Nazarick. I'm Ainz Ooal Gown. I would prefer you to call me Ainz. May I know who you are?" asked Ainz.

"Great Tomb of Nazarick? I never heard about it. My name is Raynare." told the girl now known as Raynare.

"It is expected you never heard about it. But to discuss about Nazarick is not why I saved your life. I saved you because I think you might be useful to Nazarick." told Ainz.

"And why is that?" asked Raynare curiously.

Ainz could clearly see Raynare's body tense up. He wasn't sure if it was because of his appearance or being surrounded by so many powerful beings.

"It's because you posses the knowledge of this world and knows a completely different type of magic I use. I want that knowledge" replied Ainz gazing at her.

"What makes you think that I will help you?" asked Raynare.

Suddenly she felt huge amount of killing intent from every member present there. She could help but tremble at how dreadful and bone chilling it was.

She realized that each member could easily destroy her without even raising a single finger.

"I don't think you understand your position here. I'm not asking. I'm demanding for it." told Ainz with dark red glow radiating from inside the empty eye sockets.

"Raynare, I will give you two option, one is that you accept my offer and I will make you a memeber of Nazarick."

There were audible gasps and murmurs among the members of Nazarick. It was very rare for Ainz to offering an outsider a place in Nazarick. The only exception he made was for Tuare.

"And...and the other option?" asked Raynare very cautiously.

"You will be killed right away. Had we meet any place else I would have let you go, but since you already know the existence of Nazarick you have to die." told Ainz in a causal manner.

This send a shiver up Raynare's spine. The way he spoke about her death told her how insignificant her life to him right now.

"Think about it, you were betrayed by those whom you called comrades, brothers, sisters. Join me, server Ainz Ooal Gown will your life and I will promise no harm will ever come to you under my rule." told Ainz in a confident voice, "However, try to betray me and I will make sure you will suffer for it."

Ainz noticed Raynare's face. There was a look of inner conflict on her face. It must be due to her current situation. Dying her for nothing or leaving her current alliance.

He wouldn't call it a betrayal in her case considering it were her comrades who betrayed her.

"So what will be your answer, Raynare?" asked Ainz getting impatient.

"I accept. My loyalty and life is yours from now, Ainz-sama."

It was a firm reply. There was no hint of hesitation or remorse despite her earlier reaction.

"Good. Listen well, my servants!"

Everyone immediately snapped to attention. .

"I guarantee the safety of Raynarein the name of Ainz Ooal Gown. You are hereby a subordinate of Shalltear Bloodfallen." announced Ainz gesturing towards Shalltear.

"Shalltear, can I trust you with responsibility of Raynare from now on?" asked Ainz.

"Yes, I will make sure she won't have any complaints, Ainz-sama" replied Shalltear in an elegant voice.

"Raynare, I want to explain entire lore about your race and every other race in this world to Shalltear and others. Leave no details." told Ainz.

"Understood, Ainz-sama." replied Raynare kneeling down in front of him.

"Also make sure to explain all the members about humans and technology. They...have living in medieval time if put in easy terms." said Ainz of which he received a nod from the fallen angel.

"Everyone is dismissed now."

With that said, all if members returned to their respective floors leaving Ainz and Albedo alone.

"I know you want to say something, Albedo." said Ainz without even looking at her.

"Forgive me for asking but why her?"

"Huh?"

"I mean you could have chosen the strongest one of them" said Albedo referring to the devils fighting raynare.

"I could have but I couldn't have guaranteed thier loyalty towards me. raynare is a broken individual betrayed by how own kind and by joining her with us, I have given her a new meaning to live. Thus, I have ensured her loyalty towards me." explained Ainz.

"As expected from the great Ainz Ooal Gown-sama! There is no one who could match in this world! My master and my love!" said Albedo as she practically broken into something between moaning and singing.

Ainz let out of a exhausted sigh even though physical and mental exhaustion were impossible for him.

Guess something never change.

A/N: Well that's all for first chapter. I hope Ainz wasn't OOC in my story. I'm trying to keep the relationship between NPCs of Nazarick and Ainz was close to Light Novels as I can, which is realpy difficult considering how loyal they are to Ainz and how he much Ainz love them. I let Raynare join cuz I like her character and I think Ainz benefit by keeping her for information rather than killing her.

Anyways, favorite, follow and don't forget to leave a comment.

EuSuntDracul1 out for now.