The New World, and the Land of Illusion. (Touhou Overlord crossover)

Yes this story premise is rather outlandish but hey I figured such a thing is what is needed. Besides this popped up occasionally over the last year so might as well.

---

A groan escaped as consciousness slowly started to return to her. The feeling of grass and the faint feeling of a breeze greeted her. "What happened," She picked herself up as her head pounded. "I remember using a set up with that headset I borrowed for the spell and then…"

As the headache subsided she started to look around the area. She wasn't within a futuristic, or rather modern from her perspective, room within the universality she worked with. Instead she was outside with grass, an open sky, and a faint nightly breeze.

Stars greeted her as she looked into the night sky. Renko had grown used to the difficulties of using her ability in the last few decades. With the use of magic to aid her such a problem wasn't as bad as it was but seeing the night sky without any need to help her made him recall a time when she was younger. Before those in remaining paranormal and the moon had basically cut off the leadership of the world in secret creating the conditions of how it was now. Before her learning of magic wrapped her very existence as a human into being the first Magician to be seen in the world of humans in a long time. Back in a time where she had been with her missing friend.

She closed her eyes as she thought back to that day. When they last saw each other. 'Merry…'

Reminiscing about the past could wait as right now she had something else to look into. A string of unexplained disappearances that had centered around the game YGGDRASIL. All of which looked random and were easily swept away. Indeed she would have ignored it herself if it wasn't for one thing. In one of the missing persons, someone she had known from her day job as a physics professor, had a slight taint of what she believed was magic.

Now here she was in a place where the sky could be seen again without aid. 'I should figure out where I am,' No sooner than she thought this did she activate her ability and found that everything was off. 'None of the constellations, and the moon isn't even the moon.'

Faced with weird stars, a moon that didn't feel like the moon, and the very obvious fact that everything seemed rather alright Renko could only assume she wasn't on earth anymore. Her first thought was she was in one of the "other realms" as those who still lingered in the human world called them. That thought was shut down immediately as the sky should be the same across all of them. Neither could this be the Lunarians home on the moon.

Indeed whatever had brought her here couldn't be tied to the Lunarians. That left her with few possibilities. She was either in a completely different solar system or was in a different universe. 'Did I accidentally open a wormhole?'

---

For a moment a pulse of energy had surged over the world. Most could not feel it and for those that did such a feeling was so brief that they had forgotten about it. A few knew that whatever that had been was something that peaked their interests. None more so than a large dragon who lay within a floating fortress. Tsaindorcus couldn't believe what he had felt that he almost thought his mind was playing tricks on him.

'My magic felt like it had been free,' Whatever it was had seemed for a moment to break the feeling of corruption that had edged itself into his inborn magic. It was as if something disturbed what had become reality.

As a Dragon Lord, a True Dragon Lord, he had to deal with the effects Tier Magic had on his own magical abilities. Wild Magic had suffered as a side effect of its proliferation. Mentality he cursed his father who had caused this mess overall in the first place. Yet, in a brief instance the hold it had on his magic had been removed. For a moment he had the freedom of his power. As fast as it come it was gone. Almost like a delusion of his mind.

'If I recall this is happening around the time that another player is to come to this world,' There had to be a connection as in his centuries of life had taught him that there was no such thing as coincidence. 'Could it be the player or perhaps something else?'

Tsaindorcus highly doubted it was a player. Something else had probably been the cause of that. As he thought about it he noticed that something was off. Someone was here trying to hide. "Come out, I know you are there."

Whomever it is they both were amazing at entering without triggering any alarms of the fortress but also sucked at actually not revealing themselves to him. Coming out of the shadows was a young human woman dressed in an outfit that seemed off from everything he knew. A cape that a wizard or mage would wear alongside an outfit that seemed strange. In her hand was a device of some sort small and rectangular. On her face though wasn't a look of fear, a lot most humans would have when in the presence of a Dragon Lord, or perhaps one of awe at such a being. Her look seemed closer to wonder.

"I didn't think Gensokyo had a western dragon."

Sumireko didn't know why she appeared here, and where exactly she even was, but seeing a big westerner dragon was something that she wasn't complaining about. That did bring up a question of were she was exactly. Maybe, somewhere like former hell, or maybe the dragon had moved its lair to Gensokyo much like the Scarlet Devil Mansion was moved by its vampire mistress.

"What is this Gensokyo you speak of?"

The response from the dragon confused Sumireko. She was asleep which meant she was in Gensokyo right? "What are you talking about?"

---

Chaos had gripped Gensokyo as suddenly without warning storms of various kinds, mini earthquakes, and finally tarrings of space opened and closed about. All within the span of minutes but the effects and resulting chaos was still being felt. Most of the inhabitants were in a panic about such an event likely being a new incident. For Yukari Yakumo that wasn't even the least of her worries.

In the instant that all that had happened something had attacked the Hakuri barrier. For whatever reason it didn't try to collapse the barrier, nor did it try to force its way through the barrier. Instead it was trying to take from Gensokyo, or as outlandish as it was to think of Gensokyo itself, and drag it somewhere else. Had Gensokyo just been a pocket realm isolated into itself it might have very well succeeded.

She was a bit grateful by the connections Gensokyo had though depending how far it went Yukari could have a headache. Right now her focus should be on what had attempted to take Gensokyo and to see if anyone was missing. The phenomenon, either a spell or the act of some unknown force, had attempted to take Gensokyo and while it had failed she just knew it had to have been taken from Gensokyo. Finding who caused it was a priority that she was focused on but for some it didn't seem to lead much of a trail.

Though that didn't mean there wasn't anything to follow, it was that it was confusing. One part felt as if it was from the future, time travel was something that she knew about having been stranded in the past, and only led to no real space. It seemed more along the lines of an illusion. A virtual world may be like something out of a cheap sci-fi movie. The second one, however, was near impossible to track because it felt like it was completely out of this world. Out of sync with time and space, another universe may be she did have some experience with that.

Something had reached into their universe and tried to take Gensokyo. A feat that was under normal circumstances impressive and terrifying. However, it seems that there wasn't any real control over it. 'Still, whatever the reason Gensokyo has been affected by it.'

Before she attempted to see if she could go after who or what had done this, Yukari needed to check up on everyone in Gensokyo. First on the list was Reimu. Opening a gap into she walked through and saw the state of the Shrine. While the Shrine was mostly intact, parts of the rooftop lying all around and the donation box was laying on the ground to the side, the grounds had been torn up. Damage that was all basically superficial thankfully to the Hakuri Barrier.

"Yukari what the hell is going on?!" Reimu had been caught off guard completely by the sudden incident. Whatever had just happened had torn up her shrine and she was pissed.

"Something tried to grab onto Gensokyo itself and spirit it away," An explanation that sounded ridiculous even by Gensokyo's own standards. Yet, it had been attempted by some outside source. "I managed to track it down but the thing is it's going to be rather difficult to get to who or what had caused this."

---

"So, Gensokyo is this world within a world that serves as a refuge, a refuge that you travel to in your sleep?" Tsaindorcus wondered what could have forced such a thing to happen though in her world he had a vague idea which such a place was probably filled with. Although, the term westerner dragon seemed rather strange to think about.

There was a possibility that she was from Yggdrisal. Despite his inability to use tier magic he was able to tell when it was used or if anything was made in the vein of them. What Sumireko had with her wasn't made with tier magic. "Yeah, though I guess I am not there."

Sumireko tried to think about where she could be. Maybe in some sort of western hidden world? Which might explain why the dragon hadn't heard about Gensokyo. Still, a question popped up as to why she had ended up here herself but Sumireko just probably chalked that up to something supernatural that she didn't know about.

"So, what is the place called, your world I mean?"

The dragon was a bit surprised by how casual she was with talking about this. It was as if this wasn't anything but a minor inconvenience. Perhaps it was, she probably possessed a means to return home of some sort. Either that or she literally had no idea where she really was.

"The world has had a few names depending on who you ask, we Dragon Lords know it as Saindrok, the humans once called it Terris, I forget what the ancient beastmen called it, but to the players of Yggdrisal they called this the New World."

Of all of that the only thing that sounded familiar was Yggdrisal. The World Tree of Norse mythology. Something that Sumireko did ask about it when she wanted to know about the other mythologies and how much was real. Almost no one she asked, which wasn't a lot admittedly, seemed to have an idea about what she was talking about. Kasen seemed familiar with it but told her that she shouldn't bother with asking about it. The term player threw everything she had expected into confusion.

'Wait players, does he mean something like a video game?' The multiple names for the world she was concerning as well. As much as she would like to figure all this out Sumireko had a feeling it was better to not focus on it. "Well, I apologize for popping by but I think I should wake up now."

The dragon if it could wouldhave givenher a raised eyebrow at her phrasing. "You believe this to be a dream?"

"What, no thats not what I mean," Besides she was still a bit wary about actually dreaming after the whole thing with her dream selves. "I travel between my world and Gensokyo when I sleep so if I wake up I should be back home."

In all his centuries he had never heard of something so out there. Technically, he heard that in a long time passed some old philosopher had predicted this as a possibility. That dreams could be used to travel to other worlds. Beyond that he had no idea. "Really?"

"Of course, all I have to do is focus with my psychic powers to wake myself up and…" Sumireko blinked as nothing happened as she tried to force herself awake. Even if she was not within Gensokyo proper it was possible for her to still awake back up. If she couldn't awake back home but was standing here then there had to be only one possibility. She was awake and this was actually her real body.

"You're stuck here aren't you?"

Tsaindorcus figured that was the case. It had to be because of his father's ritual. She was stuck here against her will because of him. It was fortunate for them both that she showed up here instead of some random location on the planet below. As bad as the thought was, he really didn't want to risk seeing what would happen if someone unrelated to the players could do it if allowed to roam freely. He already felt responsible for all the suffering his father had brought to the world being his son and all.

---

Reimu didn't fully understand what Yukari was talking about when she spoke about other universes. She did understand enough to know that this wasn't exactly something anyone could really see coming, though she thought she saw her say something in a barely audible whisper. Whatever the case it didn't matter much to her. Unfortunately, dealing with the incident was another matter.

"So, traveling to who or what caused this is impossible?"

"Not impossible it's just rather difficult," Most of the issue was actually how faint the echo was. Sure, she still in a word had the pathway isolated but really she wouldn't try it right now. "Before anything is done I want to see if no one has gotten pulled in by it."

Yukari knew that was a pointless justification. She already figured that had happened already. Really, right now her immediate focus was dealing with her fellow sages who likely were also planning on what to do, and get them to help with the whole crossing realities. At the very least she needed a list of names for who was missing. It was good she sent Ran off to check up on everyone.

---

So, that about does the proof of concept/prologue. I would like to hear anyones thoughts. Well, assumimg this story gets anyone to see it.

 

This took a lot longer then I thought it would but to be honest I am grateful that I at least got it out before the month ended. Sorry, but that's just kind of how it is.

---

According to Ran it had seemed that no one was missing from the Human Village, the Myouren Temple, or the Divine Spirit Mausoleum. No one from the Forest of Magic seemed to be missing to their knowledge although that was hard to fully pen down given how she really only paid a visit to those with a permanent residence there.

That's where the good news ended however. The Scarlet Devil Mansion was missing both its mistress and her little sister. Youkai Mountain had a few missing inhabitants but the most notable was Sanae who just up and disappeared right in front of her shrine. Two others were missing from the bamboo forest exactly who was unknown as a few rabbits only told Ran, the fairies around the Misty Lake were in a panic which had to mean one or both of the greater fairies which lived there were missing. The Flower Garden of the Sun was missing its primary caretaker and inhabitant. What stopped Yukari from reading the list was the fact that Okina was one of those that had gone missing as her Servants had revealed in a panic.

One of the Sages of Gensokyo had gotten taken away by this mess somehow. Yukari would have probably laughed at such a thing if it wasn't concerning. "This is just within Gensokyo directly," An emergency meeting was going to need to be called in hopes to get everything settled down amongst those in Gensokyo. "I can't imagine if this had affected any of the realms directly tied to it."

Her biggest hope was that at most it was isolated to just Gensokyo and them. Otherwise there was going to be a whole host of headaches to deal with. Some of which are more understanding than others. Speaking of the issue at hand Yukari was certain that with some help she could trace the connection to the future in order to piggyback and force open a pathway to wherever they had ended up.

The only issue for her was that it would require her and two others. Someone who can control time was preferable, something that was easy enough to get as the head maid of the Scarlet Devil Mansion will be willing to help, but also someone who can feel or see the possibilities to ensure they time it right into forcing open a gateway from this lingering connection. Unfortunately, the only person she had on hand that could do so was also one of those missing. That made things more difficult then she had liked but not impossible.

"Ran, I need you to go to Tir Na Nog."

Her shikigami looked surprised to hear that. Tir Na Nog was far out of the way of Gensokyo. The realm that was the homeland of the fairies hidden within the unseen in the British Isles and current residence to the last of the Celtic Gods. "Is there any reason I should go there?"

"I need you to get someone," Probably the only other person she knew who would be willing to help and had the skill set to take the missing position. Otherwise they are going to have to wing it and hope for the best.

---

One minute she was with Sakuya enjoying tea in her mansion and not long afterwards she felt something. A shift in the air followed by everything shaking and then the ground below of her opening up as she fell into what could be described as a rift. Remilia had no idea what had happened and found herself landed in the middle of a woodland in a small clearing during the middle of the day. Naturally, on instinct she had gathered her power to resist the sun's rays and race to the shade of the tree but for some reason she didn't feel the sensation of pain from the sunlight.

Normally, a vampire will feel the pain as the sunlight cooks them into ash. Instead she only felt mild discomfort. Which was strange as the sun didn't do that normally. Nowhere had it done that actually. Not back when she lived on the Outside World, Gensokyo, or during her time meeting with her distant relatives.

'I fell through a hole and ended up here,' That brought up a question on where she had even shown up. 'It has to be something that affected most of Gensokyo.'

Speaking of Gensokyo, Remilia noticed something off. In front of her materializing was an ethereal card. Just looking at it was enough to confirm something for Remilia. That the spell card system wasn't in effect at all. Which meant that wherever this was she was back to going about things in the old way of how things had been done. Alone as well which was something that Remilia hadn't really done in a long time. Only the clothes on her back and her spear which she always had on her for defense with her.

Looking around her immediate area Remilia noticed something that was very telling. It was faint, probably difficult to tell as someone had tried to hide the evidence, but a group of people had died here. Remilia had learned via necessity back when she lived in the late middle ages. Whomever did it only did enough to make it not so obvious. Likely hoping for the natural processes of the world to hide it. Turning away from the scene of what was probably a mass murder Remilia thought about what to do next.

Getting back home was an issue but she was certain that whatever had happened would be solved. It had to be because unfortunately for her she had no real way to return home on her own power. 'Maybe I can ask Patchi about that when I get back.'

A few minutes of wandering over a random direction Remilia was greeted with a larger clearing. Where she could see something, no someone, just standing there motionless. Her outfit reminded Remilia of a young noble lady. In her hands was a strange looking thing that Remilia thought had the appearance of a lance of some sort. Deciding to get closer she could tell that she wasn't human.

"Who are you and why are you standing in the middle of nowhere?"

No response was given. In fact, there was no acknowledgment of her presence. She just stood there looking down like some kind of standing doll. Remilia was somewhat annoyed by the refusal to acknowledge her, and a bit put off by it as well. Something was wrong with her and Remilia was curious as to why. Either it was someone's ability or perhaps a spell.

Looking at her eyes from were she was it had seemed as if she was in a trance. Yet, something was off about this. "What I wouldn't give to have Patchi here though I wonder."

As she was about to touch her in the side of her vision Remilia caught that her lance thing moved and was aimed at her. With a flap of her wings she moved back away from her. "Well, that's…"

Her outfit had suddenly changed in an instance. Almost like some kind of spell or perhaps this was her ability. "What do we have here?"

Shalltear Bloodfallen looked at the "little girl" before her. The wings coming out of her back was the most obvious trait that dismissed her rather human-like appearance overall. If Shallyear could take a guess she was probably a devil of some kind. 'She's not from Nazarick, that's obvious.'

Even if she didn't know everything in there personally she knew enough that no sort of devil or demon like her. She was a native of this world and probably liked so many of them so far, probably beneath her notice. "I wonder what a weak devil was hoping to accomplish in trying to attack me."

"Weak devil?" Remilia had been called many things. Weak wasn't one of them given that vampires are a naturally strong youkai. "You attempt to attack me and you call me weak?"

"Of course."

Remilia was insulted to even hear this. She was Remilia Scarlet, Mistress of the Scarlet Devil Mansion. She was someone to be feared and respected and here was this little upstart calling her weak. Remilia held out her hands as the spear gungnir appeared, answering her call. Pointing the weapon towards the newly armored girl. When this is all said and done she will regret those words.

---

"How did she get past the perimeter that Aura and Mare are supposed to set up around Shalltear?" No one could give him an answer and to be honest Ainz really didn't think there even was one.

Aura's beasts were patrolling at the perimeter that he had given her. The only way around it was to teleport or gate here. Which was the only way passed though he was somewhat certain that no one who could possibly do that would show up. Except of course, for whomever had done what had happened to Shalltear. Even then he didn't expect them to show up.

"She looks to be a young devil of some sort," Demiurge commented as it was kind of hard not to notice the very presence of wings on her back. "I can't make out what she is saying."

The mirror wasn't about to translate conversation. Nor was it located in such a way to try to read lips. As the young devil got closer to Shalltear Ainz was conflicted on if they should interfere. Taking a gamble he decided it was best to watch and see what happened. 'If she's the culprit I can use Greater Teleportation to be there in front of them in no time while the other Floor Guardians will follow me.'

It wasn't a very sound plan of attack but getting the surprise drop on someone was as good a plan as any now. He couldn't double back and get all that he wanted for this fight without them getting away. In the mirror he watched as his answer was given to him.

Shalltear attacked and the devil had to jump back. A few words are exchanged before the devil summoned a long red spear. Finally, they charged forward and to the immediate surprise of everyone present the first clash didn't end in the death of the devil. In fact, if Ainz was honest judging by the footwork of Shalltear, she seemed to be the one struggling in the clash.

---

Shaltear had expected nothing much from the winged girl, probably a devil of some kind, in front of her. So, far everyone that the inhabitants of the Tomb of Nazarick had faced in this world were weak and pathetic. Sure, she had dodged her first swing but to be honest that was more her putting in as much effort as she expected was necessary. Even this fight was expected to be rather easy as she expected to easily overpower this girl.

At the first clash she was proved wrong immediately and soon she found herself fighting defensively when it came to the physical front. This little girl who she expected to be nothing wasn't just stronger than her physically but was also faster than her! When she tried to break and get some distance to counter attack she closed it at a speed that Shalltear knew she didn't possess. Her own attacks, rather her counterattacks as the momentum was on her opponent's side, were deflected and blocked, almost expertly though there was some degree of sloppiness. Like she had an untold years of combat experience and training, but had neglected it at one point relying on faded muscle memory.

Shalltear used Force Explosion to send a shockwave knocking Remilia back and into the air. If she couldn't overcome her on the physical front then she was going to try on the magical side. "Implosion!"

Remilia could feel her whole body tremble as something was trying to collapse her body. It hurt but to be honest Remilia can overcome it. With a gasp of pain she endured it and looked down. The magic didn't seem like anything she had seen, and with Patchouli she had seen a lot. Shalltear who was viewing this was able to gain an idea as to the possible level of her opponent.

'Probably in the nineties at the very least,' She knew from talk amongst her creators that levels didn't technically mean everything, one's build did, but it did give a general idea of the threat of the foe. Still, compared to like everything else they had faced so far and believed such a thing was in itself worthy of respect.

Shalltear's surprise was added on as the devil waved her hand with a magic circle forming in front of her. From it a blast of red light shot out and slammed into her tossing Shalltear back. Mentally she cursed herself for just thinking that she wasn't capable of at least some magic.

Having a Magician for a friend wasn't really just all for nothing. While Remilia wasn't as well versed in magic as Patchouli she had picked up quite a lot of it here and there. The only real issue was how little she had bothered to practice. Something she had slowly been fixing as of late.

Red threads shot out from circles that appeared around her as they teached to bind her opponent. Shalltear immediately took up for the sky as Remilia raised a hand and drew something into the air, lines that vaguely looked like a letter of some kind. Crushing it and then tossing it towards her. It split up midair as they formed into a cross around her.

The symbols reappeared and from them the air burst opened as four beams of dark red, almost black energy came out and hit her from all sides. Shalltear was blasted basically where she stood as she started to feel a negative effect on her body. A debuff of some kind that she immediately realized was affecting her HP and her agility.

"Gandr is a very simple curse but it's one that I found a lot of use for," Remilia commented as she raised her hand quickly writing another rune into the air and crushing it.

From her hand she let out a blast of red lightning at her opponent which Struck her weakened foe knocking her back. With her teeth gritted Shalltear was going to have to cancel the debuff which was going to cost her MP. With a quick use of a Lesser Restoration she nullified the curse. "Greater Teleportation!"

Disappearing Shalltear reappeared behind Remilia who just barely had enough time to get out of the way of the attack. Catching her off guard with something like that wasn't easy as Remilia had grown extremely used to people appearing behind her. With a slash of her claws Remilia let out a magical slash cutting into Shalltear's armor and forcing her back.

Not wasting any more time Remilia thrusted forward with a slicing motion of her spear. Shalltear's reaction was just enough to cause the weapon to only slash through her chest and armor. A smug smirk formed on Remilia's face that was quickly gone as she watched time seem to reverse itself before her eyes as her attack was undone.

'What the…' Remilia's shock was all her foe needed as Shalltear thrusted her lance into her stomach. Remilia could feel it trying to take her own energy and on reflec she tried to resist it before flying back from the strike. She looked at her dress and the wound that had formed.

Such an injury was technically nothing. Youkai were rather sturdy when it came to what could actually kill them and as a vampire Remilia possessed an innate healing factor on top of it. For Shalltear the healing effects of her lance wasn't as much as she had expected but it would have to do. As for her opponent the strike hadn't done much of anything and she was certain that the wound looked like it was healing itself before her eyes.

---

On the other side of the mirror viewing as the fight went down the Floor Guardians and Ainz were practically speechless at the whole event. So far for the former there was a growing thought that the inhabitants of this new world were all pathetic and week. Partly because of how they themselves viewed things of considerable power seemed to be weaker themselves. Shalltear's state served as something of a wake up call that someone or something out there was an actual threat. However, there was a difference between knowing and actually seeing something that could be considered a threat.

"Physically. She. Outstrips. Shalltear. In. Strength. And. Speed," Cocytus observation was hard to deny as everytime they clashed physically Shalltear had to move into the defensive. As if to prove his point again the two clashed with Shalltear being the one to react to her opponent's movements. "Though. As. Far. As. Magic. And. Skills. Is. Concerned. Shalltear. Seems. To. Have. The. Edge."

A use of Negative Impact was used to blast the young devil off of her in the mirror as Shalltear attempted to hold her in place with Force Sanctuary. It worked for a few moments before her opponent glowed red and managed to shatter the divine magic barrier with her spear. Shalltear threw a Purifying Javelin at her as that happened which was blocked by a magic circle summoned as some sort of barrier for a moment.

"An edge that doesn't seem to be much of an issue," By the looks of it her magic wasn't Tier Magic like they are used too. Something different and as such completely unknown in how it worked. "Lord Ainz, what do you make of her magical abilities?"

Ainz was pulled out of watching the fight as he tried to recall what had just been said. Truthfully the moment they clashed on even footing, well somewhat even footing, he had watched to figure out just who that was. By his assessment Shalltear was seemingly being overwhelmed physically and her magical abilities were being used to arguably make the fight even. Unlikely everyone ese who was commenting he was more watching the fight as he tried to figure out what was going on.

"I haven't seen anything like it," None of the spells he recognized. It was like they were seeing a different system of magic that held some visual familiarities but beyond that nothing else. "It's perhaps some sort of magic native to this world."

Something else to think about. A completely different system of magic could very likely lead to issues when facing it. Ainz continued to watch on as the fight continued to be the same as Shalltear was still seemingly on the back foot even if she was holding her own. "How do you all think this fight will end?"

"Shalltear is obviously at a disadvantage and it seems is fighting on the backfoot but I am confident that she will win," A statement that may have sounded crazy given the fight seemed to be going in the favor of the devil. "Shalltear has yet to use Einherjar."

---

"Vermilion Nova!" At that a pillar of flames consumed Remilia which caused her to scream. It didn't last long as inside it the pillar waved about before it started to move and was then gathered within her hands of all things! "How the…"

Shalltear didn't get to respond as Remilia managed to reflect the spell right on to her. Having a sister that played with the Sword of Loki and who had an affinity for flames required that she have the means to counter her if the need arose. Shalltear screamed as her spell was used on her. On reflex she attempted to use her Time Reverse skill again but this time Remilia was ready. With her hand raised she pulled the threads of fate and was able to nullify the effects of the skill.

'What the hell?!' That should have been nigh impossible without a counter skill of some kind that specifically was meant to stop that.

Remilia raced forward and tried to thrust into Shalltear who in response used Mist Form to take now damage. Remilia turned over in time as Shalltear tried to attack her. Blocking it with her spear she freed one of her hands and at point blank range blasted her. Shalltear was sent flying into the air and landed with thud into the ground.

Picking herself back up, Shalltear cursed everything that was going on. She had been losing. She didn't even know how much MP her opponent even had as any spell done to figure it out failed to give her anything. By the looks of it she still had MP to spare while she was running out.

'I underestimated her,' At this point she was going to have to unleash her trump card in order to win.

As soon as that thought crossed her mind she activited her skill Einherjar. To Remilia's surprise a copy of Shalltear, seemingly completely pure white, appeared from her and right next to herself. Both Shalltear and Einherjar raced towards Remilia and while Remilia did stop Shalltears attack she did not stop Einherjar from cutting into her side.

A pulse of red energy burst from Remilia knocking back the both of them for a time. Remilia followed it up with a cut aimed at Shalltear only for Einherjar to take advantage of this to try and attack her from behind. Twirling around in time Remilia got out of the way and jumped backwards creating some distance.

No words are said but it was obvious that the momentum of the battle had changed. With Einherjar Shalltear knew she had the advantage. Sending out Einherjar to attack Remilia Shalltear figured she could use this as a chance to heal herself at least. Remilia blocked the constructs' attacks as she expected to be rushed from the side.

However, it didn't come as she predicted. Instead to the side she saw a host of creatures being summoned from shadows only for them to immediately be attacked with Shalltear's body slowly healing with each attack. Sacrificing her servants or familiars in a way that seems utterly wasteful and barbaric to Remilia.

Still, there was no way Remilia was going to let her just heal herself. From all around her formed from small magic circles red threads that tangled up the copy. A temporary solution to the attacking double but that was all she needed. Rocketing towards Shalltear a barrage of spears formed as they took out most of her summoned familiars either directly or forcing them to flee. The Floor Guardian had only a moment to get out of the way as Remilia's spear cut into her side through her armor.

Rolling a bit in midair to reposition herself, Remilia leaped forward as Shalltear blocked the incoming blow. Behind them both Einherjar broke from the bindings and raced to rejoin the fighting. Remilia broke off and flew upwards into the air as the copy failed to make contact. Looking down, Remilia saw as they both immediately turned to pursue her.

Raising her spear upwards arcs of red energy blasted down from the tip that seemed to act almost like lightning down at her foes. Shalltear used the last of her MP to cast Greater Teleportation appearing above her. Remilia broke her spell off to attack and used her wings to get out of the way at the last moment, narrowly dodging the strike aimed at her. Flipping in mid air she landed on the ground below and looked back up at the both of them.

Remilia slammed the but of her spear into the ground as her energy seemed to explode from around her. A magic circle formed below her as she then raised her spear into the air. The energy seemed to arced into the tip of the spear in her hands like a lightning rod.

Shalltear and her Einherjar raced to attack her, hoping to cancel the spell before she could finish it. Remilia brought down the tip into the ground as the gathered energy reacted. The magic circle all around her morphed its shapes into various different runes as the energy within the strike was reflected back into it. A cascading effect as the built up energy turned more violent. Right as Shalltear and her copy moved to strike the stored red energy erupted all around them in a blinding light.

As the light ceased dust and rubble from the ground fell as the clearing was torn apart and made into something better described as a blasted area. The grass in the ground had been burned and destroyed, the soil was blasted aparted, nearby trees had basically been destroyed almost completely. As the dust and smoke from the epicenter cleared it revealed only one figure still standing. Shalltear looked all around her for any sign of her foe.

That spell had been enough to actually kill her. Luckily for her then that she had a resurrection item. It had seemed that whatever that spell was it had taken out her opponent as well. A kind of suicidal spell that while not unheard of in Yggdrisal wasn't really used often if at all.

"Well, I must commend her on being willing to die to take me out."

"Sorry to disappoint you," Shalltear was caught off guard as the voice of Remilia spoke up. "But I will not be done in by my own attack."

Overhead the sky darkened as a crimson hue covered it. Reimilia flew there as she looked down at her opponent. Truth be told she hadn't had a fight like this in years, decades even. The last one was against a suicidal vampire hunter. One who could manipulate time and had an affinity for knives. The only person Remilia could say she would trust with her life. Looking at her opponent Remilia for a second could see her fate.

Her ability wasn't something she could truly control. Fate manipulation was really the ability to alter probability and one's actions. Fate was the culmination of one's choices, likely choices, and the possibilities that it created with all that in mind. A very difficult thing to control as some were naturally resistant to or could change it themselves because of an inherent awareness of its pull on some level.

"How strange your fate will continue even after your life's end at my hands."

Shalltear heard her words and had an idea what it might mean. She had died before defending Nazarick only to be brought back by her creator and the other Supreme Beings. She was going to fall and Lord Ainz would revive her. Even she couldn't deny it as her mp reserves are spent while her opponent still had some to spare on top of being physically superior to her.

A conflict of feelings raced in Shalltears mind at everything. On the knowledge that Ainz might revive her she felt both hatred, joy, and shame. At her opponent she felt anger but also respect. Shalltear had made the mistake of thinking this world was filled with weaklings and here comes someone to show that she was wrong. Even if what she said was obvious Shalltear refused to let it happen.

Remilia lunged downwards from the sky as Shalltear found the ground below her breaking as she slid away from her attempt to block the impact. Remilia was quick on the follow up as she thrusted her spear over and over as Shalltear was only barely able to hold it off.

Finally, it seemed that there was an opening for her to attack in the mess. Trying to thrust her own lance forward it was then were Remilia sprang her trap. Moving to the side Remilia stabbed her spear forward cutting right into Shalltear's forearm tearing through the armor and into the limb. Shalltear pulled her arm back but the loss of feeling was obvious as her weapon fell from her now useless hand.

Gungnir spun within Remilia's hand as she looked at the blood on the spear tip. When she cut into her foe she could smell the blood but didn't have any time to focus as she would immediately retaliate against her. Right now she knew that her enemy was basically spent and as such could take a moment to realize that her blood was foul. A living undead corpse.

"You're a living corpse of some sort that much is obvious but I don't know the type," Remilia cleaned the blood off with a swing of the weapon. "A Revenant maybe."

Shalltear was actually a bit insulted by that. She wasn't just some basic undead creature. "I'm a Vampire, a True Vampire!"

"A vampire?" Remilia couldn't suppress a laugh at this. "Please, you're not a vampire for I am one!"

"You're just some kind of devil!"

"An Oni technically, though depending on how one views it that can also be true," It was a nice play on words with the name of her mansion. "Although, I must confess both me and my sister are a bit different from the average even in that regard."

That all rested with the weapon in her hands. An heirloom of her family's bloodline and the reason for both her and her sister being born into the ranks of the bloodsuckers. Tossing her spear into the air Remilia jumped and grabbed on to it and readied the weapon to be thrown turning the spear into a javelin. As she did a demonically malicious and yet also serene and divine red light consumed the weapon. Without the limitations of the spell card rules she could unleash the true power of the divine spear. For Gungnir was a spear that would never miss its target when thrown no matter the skill of its user or the attempt of its prey to flee. In her other hand she created a large spare of red energy whose glow complemented the spear's own.

"Taste the fury of my true ancestor, Gungnir!"

The spear was tossed flying from her grasp as in her free hand she let loose the red ball. Shalltear was about to try to get out of the path of the spear yet something in the very back of her mind, a survival instinct that she had only just recently received, knew on some level the futility of it. For Remilia's own nature had been added to the spear to allow it to make its target to feel their death, to feel that their fate was sealed the moment she tossed the spear.

The spear ripped right through her chest tearing right through her heart while energy condensed around it ripped through her whole chest. Following behind it Remilia's red energy ball collided with her and in doing so her body was engulfed in the scarlet blast. Overhead the mists parted as Remilia held her hand out as gundir returned to it. The broken and torn corpse of her foe lay on the ground. It had been a long time since she really had to kill someone.

Remilia turned her head towards the sky. Having lived in Gensokyo, and even before then, Remilia had gained an understanding of when someone was watching her from afar. During her fight she had a suspicion this was the case. Holding out her hand she decided to see if this was the case as she casted a anti-divination spell.

---

Silence gripped the room as they watched Shalltear's corpse lay on the ground. Not only had the young devil managed to fight her with en . She had managed to kill her which forced the use of her , and on top of all of that she managed to kill Shalltear again with less problems as she still possessed her magic.

To say their expectations had been shattered was an understatement. The Floor Guardians had just watched one of their own fall to what seemed like a native of the New World. In that moment the growing confidence in their strength within this world had kind of been destroyed. Confirmation of beings in this world that could fight and even kill them did indeed exist.

However, when she managed to terminate the view from the mirror the shock at the end of the fight was replaced with paranoia. Ainz especially so as to him it looked like at first that she wasn't even aware of what had happened but when she terminated the view it made him literally rethink everything. Had she been aware the whole time that they had seen her? Had she gone and fought Shalltear in order to send a message of some sort? Was there more like her or was she just alone?

When his passive activated it tried to null his paranoia but Ainz literally couldn't stop as he tried to rack his mind around this. Most of his rapid thoughts are indeed in paranoia but there were also some parts of him trying to think positively, well probably in denial, about the whole thing. Maybe they weren't possibly tied to whomever had tried to take control of Shalltear and was possibly an enemy of them? If that was the case then attacking her after this was a bad idea.

"Lord Ainz?"

It was only when Albedo called to him did he realize that he had been caught in thought focusing a bit too much on the now turned off mirror. "What is it?"

"Aura and Mare are ready to move in and capture the devil," Albedo informed him as Ainz very quickly thought that was a bad idea. She just revealed that she knew she was being watched!

"What no don't!"

Everyone there looked at him in surprise at his statement. In an instant Ainz realized he might have messed up when he said that. Thinking fast he had to come up with an explanation. Luckily for him he had already thought up a good reason not too in his little worrisome thinking.

"First, she knew that she was being watched which means that she knows that she's expecting us to come after her," Now that he said it that sounded way too believable to not just be some random possibility. "Secondly, Shalltear fought her which means that she isn't the one who did that to her so we have no way of knowing if she is actually our enemy."

His arguments sounded rather weak, especially with his last one as even he didn't fully believe that. Ainz wasn't going to lie if they pushed him on it he was going to have to just give in. "You're right, how could we not have seen it?"

'Wow, they actually agreed with it?'

"Still, this event does reveal something important to note," Demiurge cut in as he cast a glance as the mirror returned to normal showing the blasted landscape with the corpse of Shalltear laying there. "There are indeed individuals in this world that pose a considerable threat."

---

You know it was a bit difficult in choosing the first interaction between Nazarick and inhabits of Gensokyo and after a few process of elimination I figured that this was the best idea. As for choosing Remilia I did so to give a general idea of the level of some in Gensokyo as her ability isn't directly combat focused, and taking some liberties she gives a good idea how the New World and Gensokyo stack up.