Author's Note: I do not own Overlord, or anything affiliated with it. The rights to it belong solely to their respective owners.


Summary: Momonga was not the only guild member who decided to stay till the end. Also there was Dianoia, a Raven Demon specializing in mental magic. When they're taken to a new world, the undead lord wants to figure out what's going on. Dianoia? She just sees a giant new play area to cause chaos in.


Overlord: A Casual Demon

Chapter 1: The End of YGGDRASIL

"You know, it really is going to suck to see all this go," one being said, sitting in her chair at the table.

Said being was female, tall and rather thin, with the head and feet of a giant raven. Her feathers were black as night and covered her entire body, with each hand sporting four clawed digits while her eyes seemed to glitter with a mischievous light. Her outfit was a robe made of gray silk, one which offered her great freedom of movement, and yet was designed to show a modest swell where her chest was, with a black hooded cape over it. Hanging from her neck was a necklace was a silver pendant of two intertwined snakes biting each other's tails.

Also sitting at the table was a large Overlord, a living skeleton without any skin or organs, and with pointed finger bones. The skeleton wore an elaborate gown fit for a magician, with gold accents, violet edges and two large pauldrons with rubies in them. Hovering just under his ribcage was a glowing red orb, and a small red glow emitted from the center of his eye sockets.

The Overlord, whose name was Momonga, sighed and said "I know what you mean. We put so much effort into this place, and now it's all gone."

The two of them looked around the room. There existed thirty-nine other chairs in the room, surrounding the table where every member of the guild Ainz Ooal Gown would meet. Lining the walls were various artifacts held in stasis until someone wanted to use it, and the architecture of the room was fit for kings. Or just those who spent a lot of time and money on it.

The anthropomorphic raven hummed. "I can still remember when we were going over how this room was to be designed. Ulbert Alain Odle wanted one chair set aside as a throne for whoever the guild leader was, but both Touch Me and Bukubukuchagama shot that down. Meanwhile, I was arguing with Warrior Takemikazuchi over which artifacts to have displayed here instead of kept in the treasury. Seeing as he played more than me, I gave in," she recalled fondly.

Momonga nodded. "Well, you probably were the most casual player of out all of us. Heck, you barely even joined in on raids and only logged in about once a week, twice at most," he pointed out.

Dianoia shrugged. "What can I say? This is the only DMMM-RPG I've ever played, but my life doesn't completely revolve around it. I like watching my anime too," she responded.

The undead magician shrugged. Personally, he had never really been a big anime watcher, but to each their own. Looking at the clock at the edge of his field of vision, he, groaned. Less than an hour left until shutdown.

At that exact moment, there was a flash of light from one of the seats, and another player appeared. This one was a living mass of shifting purple slime, with two holes meant to act as eyes. But rather than be repulsed by the sight, the others said "Herohero! You're here!"

The slime raised an arm(?). "Hey there, Momonga, Dianoia. It's been a while hasn't it?" he asked.

Dianoia gave the virtual equivalent of a nod. "If you can call two years 'a while', then yeah. I didn't think you were going to make it at all," she stated.

Herohero's eye holes widened, and he leaned back in his seat. "Two years? Man, has it really been that long? I've been working so hard that my sense of time's all mess up," he said.

Although his avatar didn't show it, Momonga frowned. "That sounds pretty rough. That can't be good for your health," he said in concern.

"Tell me about. I feel the way my avatar looks," Herohero told them. When neither of them responded to that, he cleared his throat(?). "Sorry. I shouldn't be spending my time complaining," he apologized.

Momonga waved it away, saying "Please. Don't worry about it." Dianoia, on the other hand, released a high-pitched giggle and jumped, planting her feet on top of the back of the chair and somehow not falling off.

"You're right, Herohero. This isn't a time for complaining. It's a time to reminisce about past glories. All the fun times we had. The chaos that reigned at our whim!" she said, spreading her arms wide while not tipping the chair over.

Herohero chuckled. "You always were up for causing panic for other players, Dianoia. It's why you and Ulbert got along so well. I'm glad to see that never changed," he stated, before pulling up his command console. "Well, I guess I should be going; I'm beyond exhausted. Wish I could stay longer."

Then he looked around. "That said, I'm surprised to see that the Great Tomb of Nazarick was never conquered or raided. Not even once."

Momonga grunted in surprise but didn't interrupt him. "Being guild leader really suited you. With you being the most frequent player and Dianoia helping design the tomb's defenses—when she was logged on, at least—you two've really taken care of the place."

Dianoia bowed her head in thanks. "You flatter me. But it wasn't just my own work that I was maintaining. Everyone in the guild, including you, contributed to this place, our home. I couldn't let it go to waste." Momonga nodded in agreement.

"I see. Well, thank you both for everything. I hope we meet again outside the game," Herohero said, before vanishing in another flash of light.

Dianoia waited until a minute after he was gone, and then spoke. "So he drops out of the game for two years, pops back in for less than a minute, and then leaves again? Seriously?" she said, her previously jovial tone completely gone.

Momonga looked over at her. "Hey. I'm just glad he showed up. Though you do have a point. He said he'd like us to meet up IRL, but where'd that be? We don't know anything about each other's personal lives," he said.

Dianoia was quiet for a moment, and then kicked off the chair. She landed on top of the table, her perpetually dark eyes alight with anger. "This is bullshit! This was our home. It was our blood and sweat that built it! And he wants to give it all up just like that?!" she yelled, before conjuring a Flaming Arrow and throwing it at Herohero's seat.

But of course, given that the chair was just a part of the environment and something only Herohero could interact with, the spell did nothing to it. There was an small explosion, a puff of smoke, and the chair was still there.

Then Momonga was there, pulling her back off the table. "Calm down. No one betrayed us, including him. You know that," he said.

Dianoia didn't say anything, but he could tell that the demon was listening. Despite being one of the one of the most casual players—especially compared to Momonga himself—no one could say that Dianoia didn't care about the guild or the work they out into it. She had even chosen to join him on the last day without him having to send an e-mail request, like he did with Herohero.

The Overlord looked around once again at the artifacts in the room, and approached the one behind his seat. It was a golden staff formed of seven intertwining snakes, each of which had a different colored jewel imbedded in its mouth at the top. The grip was covered in diamonds and emitted a soft light, while the entire staff as whole radiated an obscene amount of power.

"The Staff of Ainz Ooal Gown. We played without any restraint to make it. Some of us, myself included, used our Paid Time Off just to gather the materials," Momonga said.

"I remember that. I couldn't help out that day since I had an appoint with my eye-doctor, but I did help in gathering the jewels that went on top—those were some of the only raids I went on. This weapon is a testament to the guild and its members," Dianoia replied.

Momonga nodded and removed the staff from its casing. With Dianoia following behind him, they exited the Room of the Round Table. Standing outside, however, were the Pleiades Six Stars, a group of battle maids.

Also with them was Sebas Tian, an elderly butler who served as leader of the Pleiades and who was created by Touch Me. True to his appearance, he wore a traditional butler outfit that was entirely black, save for his gray tie and gloves. His face was visibly wrinkled and hollow, but even as an NPC, his eyes were still sharper than a knife's. His hair was white, and he had an immaculately trimmed beard.

"You know, it's kind of ironic. We created the Pleiades to act as a final defense for the throne room. But in the end, no player ever got that far, so they went kind of unused," Momonga pointed out.

"You're right. Not to mention, if someone was strong enough to get all the way to the Ninth Floor, I doubt all the Pleiades together could stop them. Really, they would just end up delaying the invaders while the rest of us prepared in the Throne Room," Dianoia said.

Momonga nodded and began walking towards the Throne Room with Sebas and the Pleiades in tow. Noticing her questioning look, he said "I figured I might as well move them around one last time. It's the least I can do."

She shrugged and let it be, following as well. When they entered the Throne Room, Dianoia looked around. She never failed to be awed by the detail and grandeur that had gone into it. There was a blue crystal chandelier, a series of red banners each holding the crest of the guild's 41 members, and on the wall behind the throne was the crest of the guild itself. The throne itself was even a World Item, one that had been awarded to the guild for being the first to raid and conquer the Great Tomb of Nazarick.

Standing near the throne was another NPC, one that she had forgotten about until now. Albedo, the leader of the Floor Guardians. She was a near-divine beauty with jet black hair, pale skin, and a shapely body. Her eyes were golden yellow with slit pupils, and a pair of thick curved horns protruded from her temples while her waist sported a pair of black feathered wings. She wore a white dress with silk gloves, and a golden necklace in the shape of spider's web.

Albedo simply stood there, wearing a gentle smile that was an innocent as a maiden's. Momonga let her be and ordered the others to stand by, while he sat on the throne. Dianoia, not being Guildmaster and thus not having a throne of her own, waved her hand and conjured a pocket of pressured air for her to sit on.

Momonga looked around for a moment, before his faze was drawn back to Albedo. "What were her settings?" he asked aloud, before brining up her character profile.

Dianoia, somewhat curious, brought it up on her own console. Like she suspected, Albedo was the highest-ranking NPC out of the entire tomb, befitting her leading all the Guardians. Though, ironically enough, she did not possess the highest stats out of them all; the two above her were one of Bukubukuchgama's creations, Mare Bello Fiore, and the other was the first Floor Guardian, Shalltear Bloodfallen. But when she switched to the settings, it was Momonga that shouted, "Holy crap, this is long!"

True enough, Albedo's character settings consisted of page upon page of notes, going in extreme detail on her mannerisms, personality, habits, etc. Dianoia sighed. "With a sheet this extensive, Tabula had to be the one that made her, didn't he?" she asked. He got his answer when, on the last line of the notes, she saw a line that read "Incidentally, she is a slut."

"Huh?" both players said, before Momonga hung his head while Dianoia just laughed. "I guess I can't fault a guy for his taste in women. But still…" Momonga said, before an idea came to him. 'Normally, I'd need a special tool to change the settings of an NPC I didn't create. But since I'm carrying the staff…' he thought.

With that in mind, he grasped the staff firmly and watched as the character sheet turned red, signaling that it was being edited. Although he didn't notice, Dianoia stopped laughing when she noticed that, and was watching carefully.

The first thing Momonga did was erase that last line, before thinking about what to put in its place. "Hmm… How about 'She is in love with Momonga.' There we go!" he said.

"Now, hold on a just a second!" Dianoia exclaimed, jumping off her air cushion and pointing one clawed finger at Momonga. Her scandalized tone caused the Overlord to freeze for a moment. 'Crap. I didn't think the other guild members would mind if I did what I wanted for today. But since she's here, I forgot to check if she had a problem with -'

"If you're going to make adjustments to any of the NPCs, I should get to do the same!" the demon shouted.

Were his avatar able to change facial expressions, Momonga's jaw would have been unhinged in shock, made all the more apparent by the fact that he was a living skeleton. Eventually, when Dianoia had yet to say anything else, he realized that, no, the raven-woman wasn't kidding. "Okay, I guess… But which NPC did you have in mind?" he asked.

Without hesitation, Dianoia spun around and pointed at exit. "I choose Shalltear Bloodfallen! I want you to add in her character sheet that she is actually bisexual!" she declared.

Again, Momonga sat there, before giving in. "Okay, I can do that. But why Shalltear in particular?"

"Because, my undead friend, I… am a woman of culture!" Dianois declared, spreading her arms wide. "I long for all the finer things in life. Expensive wine, lolis, exotic chocolates, well-written hentai manga, and a home-cooked meal, to name a few!"

Momonga stared at her for a while. "Don't fault someone for their tastes, don't fault someone for their tastes…" he chanted under his breath, before taking a deep breath and bringing up Shalltear's character sheet. However, when he checked her settings, he found something interesting. "Uh… Dianoia? It already says in her settings that she's bisexual."

Dianoia paused, blinking. Then, reckoning that, of course Peroroncino would add that, being a fellow person of culture, she said "Okay, then add that she's a sadomasochist."

"He… already put that in too," Momonga replied.

The demon was silent for a moment. "Then add that she's attracted to other beings with a negative karma ratings."

"That's also in there. With an emphasis on her being attracted to fellow undead," Momonga said, sweat-dropping at that last part, since his own avatar was undead.

"…Does it also state that she has no qualms about stating these preferences out loud?" Dianoia asked.

When Momonga nodded, she hung her head in despair. "Damn stupid bird-men, taking all the good ideas first…" she muttered angrily, ignoring that face that she was even more of a 'bird-person' than Peroroncino had been. "Never mind, then. Leave her settings as they are," she stated, sighing.

Momonga shrugged and closed the settings console. Now with that out of the way, he sat back in the throne, looking out at all the banners. "Now all of this will be relics of the past. Look at the banners."

She did, and together they named the owner of each one. "Momonga. Touch Me. Shijuuten Suzaku. Ankoro Mochi Mochi. Herohero. Peroroncino. Bukubuku Chagama. Dianoia. Tabula Smaragdina. Warrior Takemikazuchi. Variable Talisman. Genjiro. All of them, our friends and comrades."

Momonga sighed. "Well, it was fun. In fact, it was a blast."

"I couldn't agree more," Dianoia said. Ready for the end, the raven-woman tilted her head back and closed her eyes, listening to the timer.

3…

'It really is a shame. Besides ,my anime and solving puzzles, this game was my favorite hobby. I wonder if Momonga feels the same,' Dianoia thought.

2…

'Still, I suppose one last hurrah wouldn't hurt.''

1…

Momonga seemed to have the same idea. Together, without having even discussed it beforehand, they both shouted "GLORY TO AINZ OOAL GOWN!"

0.


When Dianoia opened her eyes, she was startled to still see the Throne Room. "Huh?!" she said, looking around. She closed her eyes again, wondering if that would do anything. But when she opened them, she still saw the game.

"Okay, what's going on?" she muttered, before brining up her console. Or at least, tried to. But when she made the attempt, nothing happened. In fact, now that she was looking, the mini-map and other bits that were usually at the edge of her field of vision were gone too. Maybe it was just bug that delayed the shutdown? Bearing that in mind, she tried using the function to contact an administrator. That didn't work either.

Off to the side, she noticed Momonga rising to his feet, appearing shocked. "Is yours not working either?" she asked, and the Overlord quickly nodded.

Then they both heard something that shocked them to the core. A voice, one that was female, stating "Is something wrong, Lord Momonga? Lady Dianoia?"

Both players looked towards the source of the voice. It was Albedo, who was still kneeling before them, though she now had a concerned looked on her face. She added "You both seemed troubled about something," and Dianoia's eyes widened.

'Her lips are moving. Her lips are freaking moving! The lips of avatar's didn't move before!' she thought. Momonga gaped, before suddenly he was enveloped in a light green glow. The red light in his eye sockets visibly dimmed, and he sighed. "The GM call function isn't working," he stated.

Albedo blinked in confusion, before rising to her feet and backing away. "I'm sorry, but I don't know the solution. I've never even heard of this 'G-M-Call' spell you speak of. I don't deserve it, but please, my lord, have mercy on me for my failure!" she said.

While she was saying this, Dianoia looked over the Pleiades, and saw that a few were actually watching Albedo out of the corner of their eyes. 'Non-programmed Independent movement? That wasn't in Yggdrasil either!' she thought, starting to panic somewhat.

Quickly, she waved her hand to create an air pocket again, just in case she fainted, and when she tried to sit down on it, it held. 'Okay, my magic's working fine. So that hasn't changed.'

She was interrupted by hearing Momonga speak up, saying "Sebas. I want you to venture outside the Great Tomb of Nazarick and confirm its surroundings. As for you, Pleiades, I want you guarding the Ninth Floor. In there are any trespassers, dispose of them."

The old butler nodded and stood, saying "As you command, my lord. It will be done." The vice-captain of the Pleiades, Yuri Alpha, parroted Sebas' words and began leading them away.

That was when Dianoia spoke up, saying "Except for Narberal Gamma. I want you to stay here and stand by me."

"Yes, my Lady," Narberal told her, bowing before walking over and standing next to her. That confirmed both of their suspicions: that now the NPCs were responding to commands that hadn't even been programmed into the game.

'Okay, let's think about this. The NPCs are normally three-dimensional models controlled by AI programs. Furthermore, they can only perform commands given by players, and even then, only from a list of commands programmed into the game,' Dianoia thought.

Only now they have possessed an unheard-of level of detail in their movements, they could move independent of commands, and the commands they do respond to don't have to be from the programmed list. All of these actions would normally be impossible for an AI. But then… that would mean…

Dianoia's eyes widened. 'No. It can't be,' she thought. Then she glanced over at Narberal, and saw that she was standing in place as before. However, looking closer enough, she could see a slight rise and fall in her chest… as if she were breathing.

Then both the maid and demon looked over when they heard Albedo moaning, and Dianoia nearly face-vaulted at what she saw. Albedo was standing right in front of Momonga and leaning forward, while the Overlord was… groping her chest.

'I know for a fact that something like THAT was never allowed in Yggdrasil. Okay, one more test,' he thought, glancing again at her side. Gathering her courage, she muttered "Skill: Targeted Illusion."

One advantage to taking fifteen levels in the Illusionist class was that, if she wanted, Dianoia could use the Skill she had just activated to an illusion of just about anything she could think of. The only limitations were that, in exchange for not requiring any MP to use, the illusion had to fit within a 1.5-meter cube, it faded away after one minute, had just as long for a cooldown, and that trying to interact with the illusion revealed its nature.

Despite these limitations, Targeted Illusion had an incredible number of uses. In this case, Dianoia created the illusion that part of Naberal's clothes were on fire. And sure enough, the moment the words left her lips, Narberal's outfit became covered in fake flames.

The maid shouted in surprise and yelled "Reinforce Armor!" However, due to the fact the flames were an illusion, the spell did absolutely nothing to get rid of them, causing Naberal to instead "Water Splash!" A large ball of water appeared over her head before dropping down, soaking her from head to toe. When even that didn't work, she desperately said "Piercing Wind!"

That created a gust of wind sharp enough to actually shred her clothes and armor, which went into effect at the same time that Dianoia decided to cancel the illusion. Thus, that Narberal was left standing there, right in the middle of the Throne Room, in only her bonnet and undergarments.

'Whoa,' Dianoia couldn't help but think. She had to hand it to Nishikienrai, his creation was a true thing of beauty. Her snow-white skin, black pony tail, and gray eyes only complimented her elegant form. Plus, the set of black bra and panties she had on, contrasting with the paleness of her skin and the blush she was now sporting, only made the image more enticing.

"L-Lady Dianoia! Why did you have to disrobe me here, in the middle of the Throne Room?!" she shouted, trying and failing to cover herself up.

Dianoia didn't respond for a second, staring at her, before she caught up to what she said. Inexplicably, she felt a surge of something like mischievousness come forth, she replied "Oh? You mean to say that you would have no problem with being disrobed somewhere else?"

Narberal's blush grew at that, and she looked away. "Well, are one of the Supreme Beings, so that's not to say that I would have a problem with it…" she muttered, doing quietly enough that she thought she wouldn't be heard.

But she was heard, and Dianoia smirked all the more. "Is that so…?" she crooned, deciding to ignore the part about 'Supreme Beings' for now. But when Narberal didn't say anything and just let her blush grow, still following her order to remain next to her, she decided to have some mercy.

"Invisibility," she said, and Narberal vanished from sight. "My deepest apologies. Please return to your quarters so that you may find a new set of clothes, and then join your sisters in guarding the 9th Floor," he said.

She could almost hear the air being displaced from how fast the maid nodded, and said "Yes, my lady," before running out of the room. That was when she heard Momonga approach her, and turned around.

"Well, if what you and I just did was any indication, we aren't in YGGDRASIL anymore," the Overlord stated.

Her good mood settling, she nodded. "Yeah. Do you think it's possible that all of this, the entire gaming world, has become real?" the warlock asked.

"Maybe so. Not only have the NPCs seemingly come to life, but they have now have complicated movements, non-automated responses, even smells," he replied. When the female demon looked at him questioningly, he quickly responded "Er… it was Albedo. S-She was wearing some kind of floral perfume."

"I see," Dianoia stated, before smiling. Or at least, tried to. It was a bit hard when you have the head of an raven. "And I suppose you got a good whiff of it when you were fondling her. Tell me, do think she's just that sensitive, or do think it might have something to do with that edit you made~?" she asked.

Momonga groaned and placed a boned hand over his face. "Let's just not talk about that. Ever."

Dianoia chuckled, enjoying making fun of her comrade. But she also recognized the seriousness of the situation, so she said "What should we do now?"

"Now, we'll just have to take this one step at a time. If YGGDRASIL has somehow become real, we need to be cautious. I've ordered all the Guardians except for Victim and Gargantua to meet us in the 6th Floor Amphitheater in an hour. I want to conduct some tests regarding my own magic and the Staff here. Care to join?" Momonga asked.

Dianoia thought about it for a moment, and then smiled. Giving an exaggerated bow, she said "New World or Old World, you're still the leader of this guild. Where you go, I will too, old friend."

Had Momonga possessed the lips to do so, he would have smiled. "Right. Then let's go."


And that's the first chapter of my new fanfiction. I ended up really liking the Overlord series , so I will likely come back to this between chapters of my DxD fanfiction as my classes and job-hunting allow. So, stay tuned for more! Also, for all of you mega-geeks out there, here are the stats for Dianoia using the same system as the other characters.

Racial Levels: 35

Imp (15)

Raven Demon (10)

Doppelganger (5)

Brain Eater (5)

Job Levels: 65

Illusionist (15)

Cleric (15)

Dark Priest (10)

Warlock (15)

Worshipper of Insanity (5)

Minimum (5)

Ability Chart:

HP: 75

MP: 85

PHY. ATK: 50

PHY. DEF: 55

AGILITY: 75

MAG. ATK: 85

MAG. DEF: 80

RESISTANCE: 80

SPECIAL: 100

Total: 685

And with that, please review! If you flame me then Bruce will smash you with his nunchaku. (I'm just kidding… or am ?)