Back in the Territory of Gloria, it has been quite a few years since Rimuru has left 

[Rimuru: " Truth be told, the Author has forgotten how old I'am and the time of travel as well, so I just I'm 10 years old, and the time I'm away from Gloria would be a 3 years, If it creates contradictions and plotholes, let's just say that I used my Original's Power to fixed the Plotholes "

With that Rimuru-sama then left the Author's space]

And right now, it was all out war with the Territory fighting an Army from the Criris, with the Combined Forces of the Gloria Military and Tempest Military, and the Personal Force of the Eldest Prince - The 12 Flamechasers, with it going up against the The Criris Military

And truth be told, it wasn't even a Battle really, since it was the complete lost of the Criris Military, despite hiring Grands to fight by there side, costing them Immense amounts of Money to the point that even The Kingdom of Tempest would be shocked of the cost that they have made

Chloe who is currently the Strongest in the Entire Tempest Force was just currently flying through the War Torn Battlefield, mowing down and slashing every Soldier that decided to try to fight her, with her just responding with one merciless slashed, often killing dozens if not even hundreds of Soldiers, which created a Mass of discord across the Enemy Army, while just boosting the Morale of the Tempest Army 

But that wasn't all as well, in another part of the Battlefield, Altamia the disciple of Rimuru-sama and the head of the defense force of Gloria Territory, with her currently using her Blade to create the Sharpest Blade that she has ever created in her current years, and add in with her Current Level of Swordsmanship that could only be said to be Godlike in nature, she was easily mowing down her Opponents just as fast and with extreme ease as Chloe 

Chloe: ' She has gotten stronger from our last duel ' Chloe commented while watching Altamia fight her battles

Agreed, much like Chloe thought, Altamia after suffering her defeat against Chloe has seriously trained in Swordsmanship and The Tempest Style itself, with her training day in and day out, to the point that she has completely forgotten to do anything else but to train, it was because of that she was able to reach a stage that could be said to be a Master of the Art now 

And when the two met eyes, they only nodded and then run towards each other, the Enemy Soldiers then rushed towards the two to try to Intercept them before they could team up, but it was already too late  for them to do anything about the events that would unfold 

Gathering a lot of Mana to there Blades, they then simultaneously slashed at each other, with Chloe being Vertical, while Altamia was Horizontal 

Chloe/Altamia: «Tempest Arts: Brynhildr Sigurtein!!» 

The two said the name of their attacks, and when their blades hit for the first time in the Battlefield, a Burst of Invisible Burst around them, causing the Soldiers to fly backwards and then suddenly upwards, and before they new it, they were all cut neatly into fine and tiny pieces

Both Enemy and Ally, upon seeing the devastation couldn't helped but paused and looked at the devastation that the duo has caused, especially with it now starting to rain blood all over the battlefield 

' Geez those two are far too extra about this war!! They even ruined my beautiful dress ' The Second in Command of the Flamechasers - Elysia thought of the current situation, and in truth she thought that they the 13(12)th Flamechasers shouldn't be in this battlefield, since after meeting the Forces of Gloria, she Instantly knew that they weren't needed since the average level of a single soldier in the Army of Gloria is already on the same level as an Elite Unit of Soldiers in other Kingdoms

' Well~ Rimuru-chan is cute after all~ So I don't mind fighting for her~ Hehe~~ ' Elysia thought, since she has met the Princess way back after all, she and the others has met the Princess on multiple occasions, with many being charmed by her personality and cute appearance, and with all of them being friends with her, they didn't really mind being moved out of Kevin's territory to helped Gloria, since they knew that Kevin himself could defend that sector of the land by himself after all 

After the paused of the Battle, it once again resumed, with the Gloria Army becoming more powerful after the combination attacked of the Two «Tempest Arts» users, which resulted in them gaining a massive moral boost, while the Enemy Army lost there Moral Immensely, it was already to the point of it hitting the negatives at this point, with some of them even committing suicide because of the amount of power that they have seen from two swordswomen 

While the battle became a one-sided massacre, Altamia just stood in the blooded battlefield with her just looking at the wreck sword in her hand and then turned to looked at Chloe's, who's blade was perfectly fine 

Altimia: ' She fined tuned her strength to much my own.. She truly is a master of «Tempest Arts», a natural genius at it, second only to Rimuru-sama herself ' Altimia thought while looking at the girl with equally full of jealousy and respect ' I see now why Rimuru-sama decided to teach her ' With that she then discarded the blade and then made a second one, with it being more powerful than the last, and with that she then went to the Frontlines to kill as much Enemy forces as she can 

Chloe seeing Altimia run off to continue the battle, could only giggle at herself at what she saw ' It's like seeing a younger version of me, always so eager to use «Tempest Arts» to proved to the world that I could use it, and also to make Rimuru-sensei proud of me~ '

She thought further in her time with her beloved Sensei, always so eager to learn «Tempest Arts», and use it repeatedly as a boast that she is a Student of Rimuru-sama

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In the Castle of Criris, and most Importantly in the War Room where the current war between Criris and the Territory of Gloria was being managed and govern in, was currently in a heated state, with it being full of tension and disputes 

" We should have moved the 3rd Division Army to one of the neighboring territories of Gloria to have distracted them of our real targets!! "

" Are you stupid! The Kingdom of Tempest has one of, if not the Greatest Intelligence Gathering Corps in the World, they would have Immediately realized our scheme! " 

" We should have combined the 4th and 5th Divisions together with the Main Army, with that we should have made at least a dent into there Defense "

" The Kingdom of Tempest, is a King that is known for there Defensive Warfare, with them being the Strongest in that category of War, with there Main Plan is to let the Army go to there Field and then retaliate from there "

" We should have ordered the Grand Casters to performed a Unison Magic all together to destroy the capital, and even if it failed, it would still bring down the Enemy Soldier's Morale quite a bit, and boost our own as well "

" Even if we think of it now! We wouldn't be able to do it!! With the Armies moving backward because of the Gloria Defending Force strong might and superior strategy, and superior armor and weapons "

The more they discuss the more and more they felt like they were defeated Instead, because of this, they choose to just ignore there loses to not get discourage and just went to the next battle plan instead 

" We should just give up on Gloria and just attacked some outskirts of the Kingdom instead, so that we wouldn't suffer a complete lost from here on out "

" But still, they may not be as Strong as Gloria, they are still Tempest controlled States, making them to be Immensely Protected and Powerful as well, especially since we just attacked Gloria, they all would be in a state of high-alert and would be ready for any forms of attacks as well "

" But still, it would be better on attacking them, rather than Gloria itself "

While this discussion was happening, the King of Criris only looked at the Map that separates the Territories of Criris and Tempest

' We need to acquire strong morale for the Army to follow my Orders, but what could it be? Well we could always offer Women? But even then, that wouldn't really worked in the long term though ' The King thought further, on how to motivate his already depressing army to continue the War

But before they could do or even say anything, the doors of the Room flied open, causing said Strategies to grabbed there weapons and then ready themselves for any enemy that would came to towards said Door right now 

And there wait paid off, for there was 5 Individuals that came into the Room, with them being a group of 1 male and 4 females, with them surrounding a single female at the middle, making them see her as the Head of the Group of Intruders 

" For you Intruders to come here, you must be part of Gloria, and to arrived so quickly and take out the guards that are stationed in the Castle, you either killed all of them, or was simply put is stealthy enough to not be noticed, but considering entrance, you must have killed all of them.. You Tempest/Gloria Army Men are truly Strong "

The King Complimented the Group, not even thinking of them using Magic in the first place, since the Entire Castle is covered in an Anti-magic Field, making it so that the use of Magic is Impossible to be used in the Castle, even the Royal Family wouldn't be able to use magic at this point in time

But still being able to kill every Guard, or just sneak there way in, without anyone noticing, already notified all of them that this Group is the Elite of the Elite of Tempest or Gloria, it was because of this fact that none of the room even dare to question them, especially with them having a war after all, they just choose to ready themselves for the possible combat 

The Leader, who was an Extremely Beautiful Blue Haired Woman with Golden Eyes, was currently looking at everything in the Room, with a hint of surprised in her facial expression, but didn't voiced it out to be heard 

" Well, it seems that the King is here as well, so this is good timing for me " She to no in particular, which was heard by everyone in the Room, which cause some of the men in the Room to moved to guard the King 

" Who are you people? And are you apart of Tempest " The King asked the Intruders, but despite the question, he already knew that they were apart of the Army, and he just hoped that there aren't physically powerful 

Because of the Barrier around the Castle, it is Impossible to use Magic whatsoever, because of that, no mage is ever stationed in the Castle simply because of them being utterly useless in the Castle if they are stationed there

Because of that, the Knights that are stationed in the Castle, didn't trained there Magic, but Instead trained there Physical Capabilities and Technique, it was because of that, in terms of Pure Physical Capabilities and Technique, that the Kingdom has believed them to be the Most Powerful Force in the right circumstances and place

It was said belief that truly motivated the Strategies to think that they have just sneak in, but when they thought that they have fought and killed them, they could only hoped that they would exhausted or have some sort of Physical Injury that they are hiding to disguise said Injury in the place first 

The Leader was about to speak, but was cut off by a Beautiful Maid with Silver hair, just moved forward and blocked there view of the Ever Beautiful Blue Haired Woman, which cause them to Instead to looked at the Beautiful Maid 

" My Lady doesn't need to speak to you low lives!! " And in a moved that they didn't know what happened, all of them was now groveling towards the ground, with them feeling and Incredible pressure out of no where, which cause them to be shocked 

' Wha!! What the hell!! The Use of Mana should be Impossible in the Castle! So why is it that the Maid could do something like this!! ' All of the Criris members thought at the same time, but no matter how many much time that they thought about it, they couldn't come up with a reason, with the sole exception of the King and some of his Men

' This isn't the use of Skill and Gravity Magic.. But this is the pure pressure that one exudes when they reached a level of power that could be said to be Divine... The Natural reaction of the Weak when they came face to face with the Strong! ' 

All of them thought, and achieved the correct answer 

Rimuru: ' Is the author making them smart, so that he wouldn't need to write some bullshit reason why they thought that they could claim me? ' Rimuru thought upon seeing that no one was actually looking at them in lustful eyes from the King and Strategies  

The Maid(Ciel) didn't use any Magic or Skills, with her just projecting her Strong Killing Intent, not directly at them, but at there Souls, which cause them to Instantly and Perfectly became subservient to her Instantly

It was a method of control, that even far surpassed an Ultimate Skill itself in terms of Effect, with the only Skill that could even come close to it's potency being Diablo's «Azazel: Lord of Temptation»

In truth, this form of subordination wouldn't be so potent without Ciel herself doing it herself, because of Ciel's precise control rivaling even Rimuru's own precise control, she was able to Instantly see the weak points of the Soul and Instant target them with her own Strong Killing Intent, while also being gentle enough to not easily kill them and destroy there mind as well 

" Addressed your Lady as such! "

" Hai!!! Rimuru-sama!! "

When they were attacked at there very souls, they were able to Instantly understood who they were facing with, and Instantly bowed down to begged for mercy

The Other Three Heavenly Dragons seeing this, couldn't helped but only let out a kind and understandable smile at the pathetic display that the Humans before them was doing 

' It is a miracle and a blessing that I was defeated by Combat by Ciel-sama Instead of this ' Lita thought, while watching how Ciel defeated this Humans with just her Killing Intent 

' She truly is far too nonstandard ' Alfia thought, completely being amazed by what she saw, she was able to realized just how she defeated this humans, which wasn't really a challenge considering their own power, but what she was truly amazed by, was the processed that it took just to defeat all of them with pure Killing Intent directly directed to there souls ' If it was someone other than Rimuru-sama and Ciel-sama, they could have only destroyed there souls killing them Instead of subordinating them Instead ' She thought back and once again just how amazing her current master is 

' I want to survived that ' Zald though seeing the nature of the attacked that Ciel has unleashed, his desire to get hit by it and survived the effects Instantly that would took hold of him 

With that, Ciel then took a step to the side, making Rimuru to be able to moved forward and then looked down at the King and then said 

Rimuru: " You are too announced the End of the War and say that you have lost and announced that you would worked with Tempest from now on, in exchanged for that, we would recover every body in the War and have them buried in the Holy Grounds as Heroes and pay you for the damages that you all have suffered from this War "

It wasn't a Request

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It wasn't an Order

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It was like the natural order of the World

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With that they vanished, already signifying that they have already left the castle itself, and with that they all then sat up, with the Strategies looking at there King for what he would do, with them not even trying to convince him to not accept her proposal 

King Morgan: " From this Moment onward, I King Morgan Criris, hereby announced my own Execution to take the blame for this War, and appoint my Daughter as the New Ruler when she grows up, with her being sent to the Royal Amadeus Academy to be ready to be Queen.. As for the proposal of Lady Rimuru-sama, we shall accept it "

No one questioned him

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No one disagreed with him

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They only nodded and then went to do the worked

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With them working together like normal servants serving there Master to there Fullest Capabilities 

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◇◇◇◇◇

Back at Gloria, after getting news of Criris, sudden announcement of defeat, they couldn't helped but be stunned a little, but after a little while just accepted it and just went with the celebration party right after 

And right now the entire Gloria was having there own Celebration, the same could be said for the rest of the Territory as well, with them celebrating the quick win that Gloria has acquired for themselves 

Of course, because of this, some of the Nobles in Kingdom have also having also started to say something towards Rimuru, not being in the Territory that was supposed to be her's to govern and protect

But just a day after, they have now been singing praises to the Princess, with some of them just off and disappearing from the face of the world 

How could that happen?

Of course, right now many of the High Ranking Officials in the Gloria Territory, was now going towards the Main Office of the Palace, with them being Fuka, Altimia, Shizuki, Rossary, Chloe and Elysia

They have decided to discussed what would happen now, well that was the original plan though

Since when they were 5 meters away from the Room, they Instantly sense the Immense Powers Inside the Room, causing them to in a high state of alert, and were about to call for reinforcement, but that planned failed with Chloe just blitzing towards the Door

Altimia: " Chloe wait!! "

But it was too late, she arrived at the door and destroyed it, with her not stopping and just slashed her rapier towards the one releasing the largest magical sign in the room, which was also the one seating on the chair 

*CLANG*

Before the ones outside could do or say anything, because of the fast motion of Chloe and her speed and way of destroying the door, there was a unrealistic amount of smoke covering there view of the room, causing them to only hear weapons clashing together

Elysia: " Let's go in as well " Elysia decided to ordered as well, with her just taking out her bow to be ready for combat, with the rest, minus Rossary, going to the Room planning on assisting Chloe 

But when they do get there, they couldn't do anything and just watched in disbelief at what they saw 

The Room was filled with 5 Individuals that are a complete mystery to them 

The Closest to the Door, who also makes it closest to them, was a Red Headed Beauty of a Woman, with a large Breast and Buttocks, with her casually releasing massive amounts of power that made them suffocate from the sheer pressure that she is releasing 

The One after that, is a Handsome Man with scar on his face, with him having a full body on his body and a Great Sword in hand, with him also casually releasing large amount of Magical Energy 

The Further than him, was, once again a Beautiful Woman with Mystical White Hair, with her Breast, Buttocks and Thighs being quite big, especially her Breast, she too was casually releasing a large amounts of Magical Energy as well 

The one further than her, is, again, another woman with her being Extremely Beautiful, with her having having Long Beautiful Silver Hair and her wearing a Maid outfit(Shizuki was confused on why she getting angry and jealous of the Maid), with her having a sword in her hand, which was currently blocking the thrust that Chloe was doing, which made it so that it blocked there view of the one sitting in the Chair 

With that Chloe then jumped back, and then unleashed several slashes towards the Maid, which was all filled with her Spirit and Mana, which would kill any ordinary man, but the Maid knowing that just stood straight and then just parried all of them like they were nothing

Chloe: «Tempest Arts: Caladbolg!»

With that Chloe just unleashed an downward vertical slash of pure magical energy towards the Maid, with said Maid just scoffing as well

«Tempest Arts: Reincarnation Pandora»

With that, The Maid calling out the Moved, shocked most of them, and before they knew it, she just slashed, with her slashed not hitting anything at all, and before they could react, the Caladbolg suddenly flew back towards Chloe in even faster speeds, and before she could react she was hit by her own attacked 

*BOOM!!*

Fortunately, before the attacked hit her back, a barrier appeared and engulf both her and the attacked, causing the possible collateral damage to Instantly disappear with Chloe just taking the blunt of the hit

" Ara~ Ara~ Well it seems that this reunion took such a turn~ " Suddenly, before anyone could say anything, a beautiful voice has been heard, which cause all of them(except Elysia) to Instantly blushed and made there heart beat faster

' Wait!! The only that could cause this effect on me!! Has she returned!! ' All of them thought

' She has returned, quite wonderful~ This would cause Kevin to become cheerful again~ ' Elysia thought, realizing that Kevin's precious little sister has returned 

With that, The Maid then went to the side, causing them to see that there beloved Leader of Gloria has changed drastically

Unlike before, where she still has a child like body

Now, she has a Body of a Mature and Sexual Woman, with her beauty even possibly surpassing the Goddess of Beauty, with her Long Beautiful Blue Hair with her every present and seductive golden colored eyes, and with her body now matching her seductive looked, it just increased her already alluring and seductive figure than before, especially with her now wearing a Tight White Navy Officer's uniform

When everyone saw her, no one said anything and just marbled at her extreme beauty, of course there was one person in the group that reacted Immediately after and leapt towards her 

Fuka: " Rimuru-chan!! Welcome back! " She yelled out in complete happiness that her little sister has returned back to Gloria

Despite the drastic changed that her Sister's Appearance has gotten, she didn't even questioned or hesitated on going towards her to hug her, she just knew that this person is Rimuru Arcadia Gloria Tempest, the she holds dear in her heart and the one who conquered it 

Ciel seeing this, couldn't helped but be Impressed at Fuka to have already knew that the one before her is Rimuru-sama herself 

Ciel: ' I give it to you Fuka, for you to able to figure it out, with a connection to her via the Soul Corridor, it just shows how fond you are of her ' She thought being quite amazed of the Princess before her

[Fuka has acquired the Skill Sis-Con - She will always know where Rimuru is, and would know the real version is, and would Instantly discover who is the real one if someone is transformed herself into Rimuru or put up an Illusion.. She would also know all of Rimuru's Weaknesses, Preference and Kinks that Rimuru might have in bed as well]

Rimuru who has returned the hug from her Sister, just looked at everyone and then smiled 

Rimuru: " Hello Everyone, I'm back "

With that, Rimuru was barrage with many questions, with Rimuru patiently waiting and answering every question she was hit with

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Rimuru: " You know, the reason why the Author isn't updating any of his Stories, is because he is creating prologues to other Stories, with the main one being a Crossover fic of Fate Stay Night x Campione, with it now being 16 thousand+ words now "

With that Rimuru-sama just revealed what the Author is doing up today without Updates

◇◇◇◇◇

Rimuru:  Alright this isn't much of a Information dump of what this story would do in the future, but more so a rant that I have, with this rant starting because of the Author found this page from Reddit, discussed about Me vs Ainz Oal Gown 

To make this fair, they also discussed that this matched up would be set in the Tensura verse, so that they would be fighting with the Rules of Tensura, with My strongest version, The WN version fighting Ainz with him fully preparing to fight it out as well, and the two of them fully knowing of each other and having a Month of preparation, in fact let's give them a year of preparation 

To begin, there are many issues that I have with this fight, for one, they have already tried to established that The Goal of All Life is Death, is an Ultimate Skill Ranked Skill, and to tell you the truth, it's far too weak to of an Skill to be an Ultimate Skill, at best I would ranked it as an Ultimate Gift, and at worst a Unique Skill

Since one must keep in mind that, Ultimate Skills are the Top of the Food Chain of Skills, there the Pinnacle of what a Skill can become, because of that it also provides the user a lot of options and powers, with them being a lot in scale, with them basically being a Divine Authority, with the Ultimate Skill users being Gods themselves 

And my problem with The Goal of All Life is Death in being an Ultimate Skill, is that it's a buff, a strong buff, but it's just that a buff, it does absolutely nothing except that, with said Buff being that it makes Instant Death Resistances and Immunities to be useless, causing said Instant Death Spells to actually kill the Opponent Instantly 

Which would actually worked towards my WN version, since we are operating in Slime Rules after all, but the thing that cause me to not label it as an Ultimate Skill despite it's powers, is that there are a few Unique Skills that have shown powers comparable to that of Ultimate Skills as well, with them being Absolute Severance and Masayuki's skill Chosen One

And even then, even when the two fight, it's not even fair, Rimuru or even Ainz could just stopped time, and with Ainz not being able to cast spells in time stopped, and Rimuru could, he would definitely just kill him right there and then, and it's not like Rimuru wouldn't do as well, since he would absolutely do it because of them being an enemy of Tempest 

Of course, there's also something that I must also acknowledge as well, with the Year Preparation, Ainz would definitely become a True Demon Lord, because of him massacre the 100,000 plus soldiers, so he could easily do it, even I would think it would be foolish to ignore that 

But the thing that I'm against is that, they think that Ainz could just evolved all of his Subordinates into True Demon Lords as well, since we must also think of something as well, the 12 Patrons required about 100,000 souls to just Evolved into True Demon Lords, and how much souls does Ainz has? Well certainly not enough to evolved 2 people 

But I already know that people would write that, the Guardians would have a Demon Lord Seed 

But here's the thought, the 12 Patrons was selected, not because of there Power, but because that they have Demon Lord Seeds, allowing them to evolved into True Demon Lords

If anyone were to say that it's because they only have the potential, since they don't have one, because there far too good nature to have Demon Lord Seeds 

Then what about Diablo? That Guy has done some shit that would classify him as a Villain

If not for that, then what about Carrera, she literally terrorized a Kingdom, by using High Destructive Magic daily just for the fun of it all

Testarossa even killed a lot of people in the Empire as well, with her killing an entire Army all by herself, it was so bloodied and terrifying that even after decades? Or centuries, it is still remembered as the Worst Disaster that the Empire has suffered since Veldora 

As for Carrera, I don't really know what she did, but she did some shit as well, since she is a Demon after all 

So they are obviously Evil, and would have Demon Lord Seed in them, but there still needed 100,000 Souls just to evolved, so no, not every Guardian would Evolved into a True Demon Lord, in fact Ainz might even evolved them in the first place

Since Ainz would think it would only need about 10,000 Human Souls, he would obviously give them to a Guardian and realized it wouldn't worked, he wouldn't just do it, since he would just think that a Subordinate isn't allowed to become a True Demon Lord as well

And before you guys think that I'm downplaying Ainz here, keep in mind that Guy Crimson, didn't actually know of this fact, and he has lived since the Dawn of Creation, and he would obviously know some shit and would be hella smart as well since he was Diablo's Equal, and my WN and LN version think that Diablo would be as Smart as he is, or even Smarter, and the only reason why he is so smart to begin with was because of Raphael

And there's also something else as well, do any of the Guardians even have firepower capable of taking out a country? From the most I can gather, she is a Small Town Country, while Me even before my ascension into True Demon Lord was already a Large Country Level 

And there's also something that I see as well, that was complete bullshit and doesn't know how hard it is to actually acquire an Ultimate Skill, and that was that Ainz could have acquired an Ultimate Skill in his Harvest Festival 

And let me tell you this, you do not acquire an Ultimate Skill in the Harvest Festival, since it is Incredibly rare even for True Demon Lords to acquire one, heck! Dagruel, one of the Most Powerful of the Octagram doesn't even have an Ultimate or even a Unique Skill, he was simply built different, to the point that his own Fist became his Ultimate Skill just because of how goddamn Physically Overpowering he is 

And the one that proved my point that not everyone would acquire an Ultimate Skill in the harvest festival, would be Luminous, she doesn't even have an Ultimate Skill by the time that she met Rimuru, with her only having the Unique Skill Lust, with her acquiring the Ultimate Skill Asmodeus when she fought with Granbell

Just because you all saw me acquire an Ultimate Skill right after my Harvest Festival doesn't mean everyone would acquire one, and besides that I was just lucky when I acquired my Ultimate Skill, with Great Sage forcefully evolving herself into Raphael and then forcefully evolving Gluttony into Beelzebub 

Also another factor in as well, the concept of Levels would disappear because, much like the thread said they are now following Slime Laws, and what so ridicules about this, is that one of the ones discussing this, thought that he would become a Veldanava Class Entity, simply because he is a Level 100 max

While also completely forgetting that there now on Slime Rules, so the concept of Levels would just disappear and retain there power, while acquiring the ability to get stronger as well, and even if the whole Level thing is still there, it's not like he would become a Veldanava Class Entity, since the entire Tensura verse doesn't have the Level System like the Overlord verse, sure they would get stronger through EXP and leveling up, but Ainz wouldn't become a straight up become God Level, simply because there's no such thing like that in Tensura in the first place

And there's also Akashic Records, which is a Skill that allows the user to use any and all skills, even Ultimate Skills, so even if Ainz were to acquire an Ultimate Skill, Rimuru would just as well acquire it and Instantly learn about it's Strengths and Weaknesses, and just create an Ultimate Skill that would be a Counter-Skill 

So over all, WN Me vs Ainz with Tensura Rules and 1 year preparation

I would still win