Hi everybody, I'm a big fan of overlord fan fiction lattely and I had a few scenes in mind since a couple of days. First story writing I should precise. So here is the story of the construction of the Adventurer's Dungeon based on the overlord light novels until the 13.

Ainz was at his desk in Nazarick catching up for the paperwork that accumulated since his departure for the Roble kingdom. Now that he was thinking about it, the whole operation seemed exagerated. The Abelion's Hill and demihuman could have been conquered directly instead of using Demiurge and the Robble Kingdom could have been using a doppelganger from the start. But if Demiurge did it, it was probably for the best (and when he had him explain it to the other guardians he didn't understood everything).

At least he got himself a new Evangelist, still low level for the moment but he was curious about what her powers will look like at a higher level. Maybe she will be able to tap into his own powers like a paladin would with his god ? Using the same spells that himself or even his mana ? The smart thing to do would be to assign CZ full time to Neia to protect and monitor her. So he wrote it down on the new orders sheet that will be given to Albedo later.

As the paper stack « in » got thinner he finally reached something that he could trully grasp in the middle of international trade balance report and modifications of law inforcement in their new vassal state, the Baharut Empire. Here it was, a report from Ainzach regarding the advancement of the adventurers guild in E-Rantel while he was busy in the kingdom.

Currently there were 14 adventurers teams between copper and platine, 1 team mithril (probably Moknak and his band he thought), 0 team orichalcum and 1 adamantite team (Darkness) wich in his mind wasn't a 'real' adventurer team now that Pandora's Actor was playing the part to keep the mortals quiet in his kingdom.

They've also started working with Carne, getting the first potion batches from Nfirea, giving Gondo specifications for gear and started training with goblins from Enri's finests.

It would be the perfect moment to build a dungeon for practice now. For that he'll need Mare to construct the place quickly since it would be probably easier to build it underground if he wanted a really huge place for monsters and spells. Moreover, he needed a construction group from Nazarick made from undeads and golems. Involving Ainzach to fill the place with traps, monsters and various encounters such as enigmas and tests will also help. Plus he liked the man for his simplicity since their travel to the arena.

As he started to remember all the fun he had in dungeons with his guild his eyes started to wander accross the room until they reached Fifth who was standing still until now but was starring at him, beaming in expectation for an order :

« Is there anything I can do, Suprem One ? »

Ainz tilted and coughed to gather his thoughts, « Yes, go get me Mare, also I'll need Titus and all the documentation he can find for dungeons construction from Ashurbanipal ».


2 Days later, at an hour of march from E-Rantel in Carne's direction.

Ainz, Mare and Ainzach were having a look at blueprints designed by Titus (Ainz thought that Titus, as a librarian elder-lich with a high intelligence, made a really nice work) for the first floor while golems were cutting trees in the spot they had picked up.

Ainzach was impressed by the efficency of his new kingdom in heart. Ainz Ooal Gown contacted him the day before and here they were today, starting the construction with incredible tools at hand. According to the constrution manager, an Imp who was repporting from time to time to the small elf child that came allong with the Sorcerer King. He has been introduced as « Mare, a guardian of Nazarick, surely the most fitted for a massive project ». Tthe construction of the ground floor buildings should be ended in a week and they would start digging for the main underground project. The ground floor facility was already drawned, a huge complex with training grounds, shops, a blacksmith, an administrative building, warehouses and several other small buildings, just in case.

As they were discussing the dungeon, Ainz realised something. He had to know approximatively the level of adventurers that fits the different rank in order to make them fight appropriate ennemies from Nazarick pop monsters and make them progress.

« Tell me Ainzach, we currently don't have a team of each rank in E-Rantel, from copper to adamantite, do we ? »

« We don't have any iron team since they all left due to lack of missions and new adventurers that came were either copper or gold ranked your Majesty. Moreover since the vampire 'incident' last year and your conquest of the city, no orichalcum team either »

« Mh, and I don't think Momon is representative of adamantite rank » Ainz said.

Ainzach looked at him surprised, « what do you mean ? »

« Well I don't exactly know how strong are adamantite adventurers but Momon is mostlikely stronger than all of them. How much stronger from copper to adamantite an adventurer must get if we, as you told me in Arwintar, 'Raise the hatchlings' ? »

Ainzach thought about it for a minute before answering : « from copper to gold an adventurer must grasp the fundamentals, understand how things works outside of their usual lives. They also have to be able to fight in a group against an ennemy group that could include several monsters such as ogres, undeads or magic casters. And then, they have to obtain powerfull equipment, powerfull martial arts, skills and spells, and always improve themselves as individuals and team. The ranks mainly reflect the difficulty of missions achieved with the guild. But I'm wondering your Majesty, Momon shouldn't be here as the strongest adventurer of your kingdom ? »

Ainz didn't thought of it, obviously from Ainzach perspective it was logic but for the moment Pandora's Actor was better used as Momon in E-Rantel focusing on keeping things smooth and being a bait if someone wanted to turn him. If needed he can always make a quick stop but the truth is that there was no real adamantite team in his kingdom. He answered Ainzach :

« For the moment Darkness is not needed and I doubt that they will improve a lot in here», as he thought about Nabe / Narberal and her being still level 63 and not 100 like himself. He tried to imagine her fighting Moknak who was a mithril adventurer, even with all his team 'Rainbow' they would be crushed. He could even see her smile over their bodys calling them bugs of all sorts while electrocuting them.

But then he remembered Blue Rose and their fight with Entoma. With only 3 on 5 from their team they were able to win against a pléiade. That was something ! Even if Entoma wasn't the strongest amongst them, she was still level 51. If his new adventurers were that strong, they could be really usefull for Nazarick around the world while not being too much of a threat in case things go poorly.

He might also use this dungeon for his real forces as well in the end. With a level in the dungeon for Nazarick's use only, he might be able to improve fighting skills for a guardian one by one or teams such as pleiades who'll need to fight all together to overpower a real level 100 threat. Yes, things were starting to get in good shape. But still, he'll need better adventurer teams as reference in order to fill the dungeon once it's finished. « Ainzach, while this place is under construction I want you to recruit some orichalcum and adamantite team for a consulting job. Two of each should be enough while waiting for more to come »

« Several of each won't be easy, if I get it right you want to know how strong they are and try the dungeon ? »

« Yes, in order to make the more advanced parts of the dungeon we'll need to know how strong is an adventurer party. Especially the currently stronger ones, who are our short term goal. And I also heard of Blue Rose from Momon and I'd like them to come ».

While thinking about it, Ainz figured out that it might be a good idea to send Momon or use Renner to be sure they'll come but it might be better to trust Ainzach with adventurers management.

« You will work with young Mare here who will be in charge with Aura of assessing the strenght of adventurers and filling the dungeons for most with monsters and traps for the adventurers to overcome. Mare, you will collaborate with Ainzach and your sister on this project. Don't hesitate to use any help or ressources you need from Nazarick. Also contact Gondo from Carne to help you hiring some dwarves to work with you, their city was impressive for an underground one. »

Mare who until now was focused on the contruction and thinking about the spells he'll use to create the dungeon turned to them and said stuttering : « Yes Ainz-Sama ! I … I will do my best ».

Ainzach was really curious about this child, but a caster guarding the Sorcerer King was probably as strong as the great Fludder or the young but impressive Nabe. But while he was a little worry at first to work with « a guardian from Nazarick » expecting an undead or a monster, he was put at ease that it turned out to be a cute little elf girl that looked really shy and her sister when needed. The Sorcerer King is like that, nothing is like expected at first.

« How much can we offer for this mission ? It's not really something usuall and they might worry coming work for the Sorcerer Kingdom to help us build a new adventurer guild your Majesty»

« I think a few thousand gold pieces and some magic and runic items for each team should be enough for several months of work ? We can provide potions, healing and resurection without penalties for free during the mission of course, like we will when the dungeon will be running and if needed each team can make a request, even if not everything is on the table. But a longer life, a change of species, spells or knowledge can be granted, if that could incite them to become adventurers for the Sorcerous Kingdom, that can be a good investment »


One week later at the Royal Capital

Since 2 days, Blue roses were discussing the subject; the adventurer guild master from E-Rantel came through a hole of darkness in the Royal Capital guild hall and asked to talk to them … to offer them an absurd deal from the undead. Tia and Tina were trying to learn as much as they could about E-Rantel and the Sorcerous kingdom. They managed to learned a lot, especially some details about his killing of Jaldabaoth, conquering of Abelion Hill's demihuman and claiming of the Demon Maids that fought Evileye and Nabe. Meanwhile Evileye was sighing about Momon and blustering agains't the Sorcerer King who dared trap her knight; day dreaming of how her love for one will destroy the other and fighting with Gagaran about either to go or not. Lakyus seeked guidance with her friend Renner, with her she was certain to hear good advices …

Renner like always, was delighted with Lakyus's visit, it always was a great joy to play with Blue Rose and since the appearance of Albedo and Ainz Ooal Gown, her Master, it was incomparably better. Drinking tea and talking about the Sorcerer King with Lakyus and Climb, while playing the frightened but hopefull princess role was the funniest thing in her whole life.

« So, Lakyus » Renner said putting her cup on the table, « the Sorcerer King wants to recruit adventurers and he asked for you, I imagine that was a surprise ? »

« Yes it was ! We never had any relation with him, we just happened to work a couple of time with Darkness before he conquired E-Rantel » Lakyus said looking embarassed. « If we understood Pluton Ainzach correctly, the Sorcerer Kingdom is building a trainning dungeon for adventurers and need some of them to help him. He told us that we were the first he was asking to. After he was going to ask to Silver Canary and to the empire adventurers guild for some orichalcum teams. And then he'll try in the Draconic Kingdom ».

« What a fearsome king, already having Momon and wishing some of the most powerfull others. » Said Renner looking concerned.

Climb reacts at his mistress sight, moving on his chair, unconfortable, well aware that he was not strong enough to protect the kingdom and Renner from the whole world.

Renner enjoyed the torment of climb for a few seconds but added : « So if I think about it, his offer looks genuine, I have heard that he already made a speach in Arwintar to recruit adventurers. For the moment, the Sorcerer King has a limitate credit beside sheer power, I think he wants to improve his image and promote his country. »

« What makes me worry are the terms, he wants to hire us for several months in E-Rantel, make us try their dungeon and fight monsters, claiming that heal and resurection are free of charge. Althought they are offering us a lot of money, magic items and a 'request' from the Sorcerer King whatever that means. » Lakyus added looking uncertain, « it's not like we had a lot of jobs besides you occasionaly hiring us lattely, nobody dares to make a move ».

« I feel that there is a question that Blue Rose has to answer Lakyus : how long can you be an adventurer and avoid the Sorcerer Kingdom. » said Renner looking thoughtfull « Besides the Slane Theocracy and the Draconic Kingdom, now that the Sorcerer King is assisting the Robble Kingdom, there are not a lot of places where you can operate while avoiding him, and sooner or latter they'll also have to face him one way or another ».

« The theocracy is out of question and the draconic kingdom is too broke to hire adventurers. I thought about the other northern countries, the Argland Council don't need adventurers and the City State Union is too far from the Kingdom to operate. Gagaran and I won't be at ease if we are totally unable to assist it if needed. »

Renner made her 'angelic face n°2' « It might be an occasion for your team and the Kingdom I think. You'll be legally and covered by the guild in E-Rantel. You might be able to learn a lot ».

« Evileye is obviously motivated to go in E-Rantel to discuss the mission since she could see Momon. Tia and Tina are probably curious enough to go for it. Gagaran thinks it's a trap and that we don't need it anyway … Personaly I'm not sure ».

Climb remembered the last time he saw the Sorcerer King, hesitated a little to talk but finally said : « When Ainz Ooal Gown faced Gazef on the Katze plain, he asked him to come at is service. At that moment I felt like he truly wanted him by his side; after all that happened that day, the more I think about it, the more I believe he admires strength regardless of the rest »


Later that day, all Blue Roses gathered in their room

Evileye was still in favor and Tia / Tina aggreed that they could do good business in E-Rantel, they heard from merchants that the Sorcerer King was filled with gold and was investing in everything in his kingdom, from potion and magic items to housing and food production. They had good hope that even a simple trip there was interesting for them.

Gagaran however was still not convinced, « This undead is too dangerous, I already died recently and I didn't enjoy the experience that much. Even if other adventurer teams show up, they'll be waiting for us ! »

Lakyus aggreed « Yes this might be deadly, but like Renner said, sooner or latter we'll have to face the undead, we have to figure out what is going on with this sorcerer kingdom. I feel we won't get a better opportunity ».

Tia, on a couch besides her sister added « Don't forget, we might encounter those demon maids again, especially the bug one or the others 2 that you fought Evileye. I'm not sure what kind of job they're doing for him now, but I heard that one of them is in the Robble Kingdom with a girl that is creating a cult to the Sorcerer King ».

« Yeah they were kind of strong, I couldn't do damages and had to avoid a lot of attacks from them. They were good at working together, but I wonder what Momon thinks about them »

« Or Nabe » added Tina always remembering Evileye the beautifull ice princess when she could.

« Still, thinking that Ainz stole them to Jaldabaoth and killed him, seems insane » said Tia

« If we go, we should go along with backup, I don't think Brain will be up to and Climb won't leave the princess. And besides we can't go with more adventurers that there already will be » said Lakyus thinking outloud. « Evileye you should [message] Rigrit, last time she said that she was doing research about Ainz Ooal Gown, if we go in the Sorcerer Kingdom at the same time, we could help each other. If we are going to do this, we'll need all Blue Rose »


The same day in Ashurbanipal - library of Nazarick

Two maids were moving discretly accross the huge room, sometimes crossing the road of a lich and nodding politely.

« What are we doing here Ento-chan ? you can tell your big sis' »

« You saw me and followed me, I wasn't going to tell anyone » said Entoma hesitating

Lupusregina stopped Entoma and looked around them, then said with an evil grin « I'm not going to tell anything to Yuri-nee if it's … weird ».

Entoma's face didn't flinch but Lupusregina could sence her uncertainty, so she added « I'm not sure what it is about but, whatever, Lupu-Chan will always be there for you », she added with a way too serious face and big eyes starring her while holding her.

Entoma started to walk again and said « Then come along » and they resumed their way. « I heard Mare-sama talking about his work today »

« Yes I know, I crossed some of those adventurers - toys at Carne for who he is building things, it's what Ainz-sama wants. So what's the big deal ? »

« I heard him talk about hiring adventurers to fight monsters picked by Aura-sama »

« I'm sure it's part of the Ainz Ooal Gown 10 000 years Master Plan ! » screamed joyously Lupusregina way too loud, getting bad looks from elder lichs and some overlords.

Entoma stopped walking and turned to Lupusregina, then using her real voice instead of the sweet girl's she was using before:

« I HopE So LuPU-ChAn »

She resumed walking, until they reached, in a corner of the room, an old man sitting at a table with an elder-lich hovering next to him. The table was covered with numerous spell books and parchments.

Since the vassalisation of the Baharut Empire, the status of Fludder Paradyne regarding the emperor or the country wasn't clearer. But that way he was able to come for a few days each week to study and do research for Nazarick, or what he call it 'The God of Magic's Domain'. Usually working at the library or asked to give an advice about the world to his master, he quickly got used to the place. Incredible beings coming in incredible shapes or forms. One moment he was talking mana cost efficiency while drinking a Nazarick cocktail at a bar with a suited up demon the next he was working on a permanent [gate] spell at the library with overwhelmingly powerfull undeads. It was the paradise his heart always desired.

He was working with Titus, when two of the pléiades maids came in. He recognized them as his master's throne room guard, if he remembered correctly their positions. (if it matters in this place where he saw a dark elf child play catch with a dragon wearing glasses and scolding him for being to slow and fat until he cried) one of them with red hair and braids the other one wearing a strange mask.

« What can I do for you pléiades-sama ? How can I be of service for this great place ?! » Fludder said jumping off his chair and bowing like a madman.

Lupusregina looked puzzled but Entoma hesistated a second and turning her face between Titus and Fludder said with her sweet voice :

« Do you know a spell called [VerminBane] ? »

Fludder and Titus thought for a few seconds and answered almost in the same time « no I don't » looking at her with the same look of interest in their eyes / flames in skull.

« I'lL nEeD YOuR hElP WitH A pErSOnAl ProBlEM » said Entoma starting to drool, wondering how this bitch with a red cape and a mask will taste.