So, yeah this idea came to me and I figured I might as well do it.

Also, given some issues with grammar I am updating each chapter but if you read it already things should be more or less the same

Disclaimer: I do not own both franchises.

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 setup 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 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 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 piqued 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. Mentally 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 came 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 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 where 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 Hakurei 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 for the connections Gensokyo had though depending on 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 maybe 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 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 lying on the ground to the side, the grounds had been torn up. Damage that was all superficial thankfully to the Hakurei 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 Western Dragon seemed rather strange to think about.

There was a possibility that she was from Yggdrasil. 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 Yggdrasil they called this the New World."

Of all of that, the only thing that sounded familiar was Yggdrasil. 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 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, would have given her a raised eyebrow at her phrasing. "You believe this to be a dream?"

"What, that's 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 on 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.

Well, there goes the Prologue. Yes, I am wanting to set up the issue for the inhabitants of the new world and in turn the other visitors/invaders in the Great Tomb. For dome context Renko and Sumireko are summoned before the Tomb appears but yeah they aren't the only ones to end up here.

As for power scaling of Gensokyo I am being rather conservative and not going with the insane high ends because that's not really fun narratively speaking. However, those stupid extreme lowballs are also dumb. I will mostly stick to something like the middle ground. The reason will be apparent in later chapters. Although that is more predicated on if this idea can justify itself as a story.