This Is An Overlord Fanfic. Maybe...

"... Hmm, I wonder what should I eat for dinner."

In Yuki's apartment, Yuki can be seen sitting on the couch while watching some Anime.

He just logged out an hour ago from YGGDRASIL. Today is an uneventful day for Yuki, be it in-game or in real life. And since that was the case, Yuki decided to log out early and relax since he felt that he played enough for today, and there's no need to stick in-game for much longer.

There's no event. There's no one he could play with. He's bored. The vicinity he's currently at in YGGDRASIL is already cleared of Monsters. No Quests or Missions he can finish or do. So pretty much, no reason to play today.

*MESSAGE!!!*(ringtone)

Suddenly, while Yuki was wondering about his dinner, his phone rang.

"... Hmm, who could it be." Yuki said as he picked up his phone to see who sent him a message.

"... Peroroncino?"

When he opened up his email, he saw that Peroroncino messaged him and sent him a bunch of images.

He click some of the pictures, looking forward to seeing some nȧkėd Onee-san, but all he saw is a bunch of pictures of him and his Guildmates. Them in YGGDRASIL of course.

Though greatly disappointed, he's still happy to see all of this.

He scrolls throughout the whole album and sees various images. He even saw some pictures of Momonga sitting on some big throne while acting like a king, but not just Momonga but all of them have the same pictures on that particular throne.

Though actually, all these pictures that were sent to him were no ordinary photos since all of these are taken inside the Tomb of Nazarick after they finished conquering it.

Yes. They managed to defeat all the Bosses and clear out all the Floors.

It's already been three days since then. After they cleared up all the floors, they have been rewarded with a lot of extremely good things and one of those is the Whole Nazarick itself.

They spend their days inside the Tomb, doing a lot of things and exploring the part of the Tomb that they haven't explored yet.

And also, since they managed to clear the whole Nazarick on their first try, it was considered an achievement. And since it was considered an achievement, they have been rewarded for it.

One of them is a world item called. Throne of the Kings.

It is the same Throne that Momonga was sitting on in one of the pictures that Yuki saw earlier.

(Here)

They celebrated after all that and officially make the Great Tomb of Nazarick as their main Guild base.

The whole Guild had become more excited about their new Guild Base and can't wait anymore to do the things they wanted to do in it, and of course, including Yuki since this is the moment that he was waiting for, ever since he started playing YGGDRASIL.

The moment where he can finally Lay out everything that's hidden within him.

Everything he's constructing so far, can finally take shape and form.

And no one knows how much Shaping and Forming Yuki's planning to do.

God can only cower in fear.

∆∆∆∆∆

First part: Floors

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Five months had already passed.

For that whole five months, the majority of the members of the Ainz Ooal Gown guild, did nothing but spend the rest of their days inside the Nazarick to do what they're planning or doing in it.

They go outside sometimes to hunt and find some materials but most of it is just for the sake of them being inside the Nazarick again.

Prior to them conquering this whole Dungeon, the Great Tomb of Nazarick that was originally set to have only six floors, had been reconstructed and stretched to a whopping 13 floors.

They also get rid of the stairs that connect each floor as they all see it as, Boring and Lame.

So, to travel between floors, they made specific points on each floor, where there are open gates that allow magical transit.

One needs to take these gates at specific locations to go level by level if they want to go from a lower floor to an upper floor.

In the Original Timeline, Nazarick was only reconstructed from Six floors to Ten floors. But due to Yuki's presence, it was changed.

But Yuki didn't touch or change anything on the original floors as it was managed by his Guildmates, and there's no practical reason to do that.

The whole Floors right now are like this.

1st~3rd Floors: Grave.

5th Floor: Glacier.

6th Floor: Jungle.

7th Floor: Lava.

8th Floor: Wilderness.

9th~10th Floor: Citadel

11th Floor: Royal Suite.

12th Floor: Throne Room

13th Floor: Acropolis

They also made a Treasury but it's not accessible by any normal means. In their early days of renovating the whole Nazarick, the Treasury is the first thing they created since they needed a room where they can place their whole valuable items, safely.

Yuki also helped when it comes to the Defense since he knows about the event where the whole Nazarick is attacked and raided by Thousands of Players. That's why he increased the level of Defense they have just in case it happens in time that he was not expecting it to happen.

As obvious as it seems, Three of the floors in Nazarick that do not belong in the Original ten floors of the Original Timeline, the Citadel, and the Acropolis, are created by Yuki himself.

These floors belong to him. He created it all by himself.

Actually, these days, he is not even going outside anymore. During these five months, Yuki spends all of his time inside the Nazarick, doing nothing but customizing and constructing his floors.

Yuki only focused on the 9th and 10th floor in these five months. He didn't do anything yet on his other floor, the 13th floor since he wanted to finish these floors first before going towards the 13th since that is the most practical way.

The 9th and 10th floors that Yuki's creating serve as the last line of Defense of the whole Nazarick.

But this Floor is not an ordinary Floor that's just meant for Defense. Cause if people heard the word "Floor that's supposed to be the very last line of Defense", People would immediately think about a floor that's filled with Barriers, Traps, Guardians, and many other more, but NO.

It has all of that but this floor is not specifically made to contain all of those.

But Yuki did make sure to create this floor with the "Last line of defense" as the main intent of these two floors. Yuki even said to his Guildmates that these floors are so unpassable that even if all the Guild members were to step in here, they wouldn't last for long.

Yuki took five months just to completely finish these two floors. For the whole five months, he didn't let any of his Guildmates to enter these floors. He locked the whole floor so that no one will be able to sneak in.

If they were suddenly attacked by an outside party, the intruders from the 8th floor will be immediately redirected to the 11th floor if they access the teleportation portal there, completely skipping the first two floors. That's how dedicated Yuki is to his secrecy regarding these floors.

Only Yuki can have access to it, even by the use of the Ring of Ainz Ooal Gown, they wouldn't be able to go inside it.

But after five months of dedicated hard work, Yuki finally invited his Guildmates to check his newly created masterpiece.

Yuki even challenged them all by saying that if someone manages to pass the two floors he created, he will reward them a World Item.

They exaggerated about it but Yuki just said that that's just how confident he was about his creation.

They all accepted it and think that Yuki is just giving away his World items since it will be pretty easy for them to pass only two floors. They already conquered these once, how different could it be?

They all entered the First floor of the Citadel, the 9th floor, and what welcomed them is a white room. The room was four-dimensional. Inside, they saw nothing but four metal doors on each side.

They actually raised their Defenses since they thought that there would be traps everywhere. But after a minute of making sure that the room they're currently in is practically safe, they all proceed to go towards the Door.

They also checked if they can destroy anything in here using some spells or skills, but they only found that their spells, for some reason, are not working.

Having no choice but to walk on the path that was laid to them by the oh-so-great Yuki, they all decided to go towards one of the doors.

The door was surprisingly plain. If one were described it, they'll surely say that "It's a metal door." That's how uncharacteristic it was.

Touch Me is the one who volunteered to open the door. Believing that he's the toughest one, that he'll be able to take whatever kinds of trap that Yuki set on the other side.

So slowly, he opened the door, and once it's fully open, just then, they finally see what's on the other side.

The scene they all saw on the other side of the door had sent chills to their spine.

Anyone can recognize what's on the other side.

A hallway of an Hospital. An abandoned, dark, messy, and where lights are flickering type of Hospital.

They're all staring at the hallway, weighing their options on whether to go out or not.

But while they're in the middle of their thoughts, at the end of the hallway they're looking at, a silhouette of what seemed to be human, appeared.

The human is walking slowly, passing across the hallway.

But all of a sudden, it stopped, and slowly turn towards their direction.

They all stared at it, and that human stared at them too. Though they can't see its features, they can tell that it is looking at them.

Slowly, that human's whole body turn and without any qualms of hesitation, started running towards their direction.

*Boom!*

Without asking any question, the metal door was suddenly shut by Chagama. After that, she looks at the ceiling and shouts at the top of her lungs.

"... YUKI! WHAT THE F*CK IS THIS!"

After this, as if to respond to Chagama's outburst, Yuki's voice echoed throughout the room.

"... Easy there darling. Don't ruin the fun. Hehe."

Though they can only hear Yuki's voice, everyone in the room can already see Yuki having a sadistic smile on his face while saying this.

"... GRR!! I SWEAR, ONCE I GET OUT HERE, YOU BETTER GET YOURSELF READY YUKI! YOU HEAR ME!? ARGGGGHHH!!!"

And with that, their journey through the peaceful land of the 9th floor, continues.

(AN: The second part of this will come again in the form of [ Side Story: Citadel's Journey ] and will only be available on my Patr-eon.)

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