70% of my body is made of Touhou

Don't forget your birthday stretches especially into your if you're young (Old)

First example I'd like to discuss is Yu Yu Hakusho. Since we know Shiki Eiki is the Yama assigned to Gensokyo, that means that the Yama in Yu Yu Hakusho could just be the one assigned to Earth. I also went to the wiki briefly to see what some of the other worlds in that show are that I haven't gotten to because I haven't finished the show yet and there's also a version of Makai in that show, and since it's so vast I think it would be fun if Touhou's Makai and Yu Yu Hakusho's Makai were both connected. Maybe Shinki's city in Makai wasn't the only existing city there since it's such a large location. In fact, I would like to dump any show that takes place in normal modern day Earth that have Makai as a potential world to go into, mainly for the sake of building together a large realm to work with.

The next example is Dandadan, and mainly because the idea of Okarun, Momo and their gaggle of idiots meeting Sumireko and going to Gensokyo sounds like an amazing crossover idea and Momo and Okarun would both love Gensokyo. Okarun would ask Nue so many questions and Momo would wanna be friends with Reimu so bad. Meanwhile, Seiko and Yukari are having the battle of the century and Turbo Granny and Mamizou are watching it together and catching up on stuff since I imagine they would be close friends lol. Also, the Lunarians would absolutely be considered aliens to Okarun and he'd be desperate to learn more about them.

Speaking of the Moon, I think it would be interesting if we added Sailor Moon to this hypothetical. I know a bit more on the world for that, and with the description of how the future Earth works you could probably work in some of the Hifuu Club stuff into some of the precursors to that. Also, I like the idea of the Lunar Capital staying on the hidden side of the moon while the moon civilization in Sailor Moon potentially lives on the more visible end of it, and the reason the Lunarians didn't get screwed over by Queen Beryl is because they stayed hidden pretty well. This one is kinda loosey goosey and I know there's a lot more space worldbuilding in this series but again, the idea sounded fun and I think you could definitely work this in if you felt like it.

Now that I think about it, could you hypothetically work in the Fate series/nasuverse into this as well? I know with one of the visual novels in that series there's a supercomputer on the moon and maybe that can coexist with the Lunarians??? IDK someone please tell me if you could work this in.

I think K-Pop Demon Hunters and Jentry Chau VS the Underworld could work here too. I like the idea of bringing some of Korean and Chinese folklore into this too since Touhou kinda brings it in already with some character based on Chinese folklore. Once again these two are kinda stretches, but with how Gensokyo works, I feel like some of the realms in that show too could be parts of Makai/the underworld that are kinda like the Animal Realm where they're close by it, or there is just one big underworld with all the different variants of Hell located to each culture's mythology. IDK how well that would work and if someone reading this is more familiar with either of those two please let me know. Once again both of those options are based on a "wouldn't it be funny if these characters went to Gensokyo?" type of deal. These two are kinda really stretching it though. Under this logic, I am also adding the Percy Jackson book series/universe and even the Welcome to Night Vale series. I loved the Percy Jackson books growing up and I have read one of the Welcome to Night Vale novels (the faceless old woman who secretly lives inside your home) and am working through another one right now (Welcome to Night Vale). I know that the latter doesn't have exact parallels to some of Touhou's worldbuilding rules/philosophies I think there is still something spritually there you could work with IDK. This one is mainly just vibes. Oh, also Gravity Falls, I absolutely think Gensokyo would be canon to that universe as well, and because I saw some really good art of Dipper asking Yukari where Mabel is and I love that concept so why not. As for more details on the Percy Jackson idea, even though it has some issues with how it portrays the gods and Greek mythology, I also think that's what makes it easy enough to include. These are incomplete interpretations of these gods by the people of that world, so it kinda fits with how Gensokyo works as well.

And now onto the things I don't think people would immediately think of as being shared universe material with Touhou. The common thread on these next few are "universes where human belief ends up impacting reality". First up is Mandel Catalogue, probably one of the more direct comparisons if you're into analog horror, but a funny possibility. This goes for stuff like Greylock as well even though I haven't watched it, I know the gist of it and that it also does the "people's belief in something impacts reality" thing too.

Here is where we begin leading into connecting Touhou to internet creepypastas, because I think the universe of Abandoned by Disney would also be one where Gensokyo would be canon. The idea of Reimu encountering the photnegative Mickey thing in the OG creepypasta and going "ah, so this is what America's Yokai are like" and not even batting an eye would be extremely funny (same idea with Mandela Catalogue, her not even being scared of the alternates because she's "dealt with worse" would be funny too). Like, no shit this is happening in countries other than Japan too, why wouldn't it? Also, bringing in some of the other stories I mentioned earlier, I think Okarun and Momo encountering this same thing would be really funny/interesting. Okarun would wanna collect the weird goop that comes out of the suit to see what it's composed of and Momo would probably be underwhelmed since it isn't trying to eat/kill either of them. Edit: Aira would have an appropriate reaction and would immediately try and crucify it magical girl style, and Jiji would agree with Momo that the decapitation trick is lame and yell at it to "DO A FLIP" to which Momo and Turbo Granny would join and then Okarun and Aira join (Okarun for scientific purposes, and Aira would tell it to do a flip off of a building), and soon enough this poor demon beyond all comprehension is getting yelled at to do a flip by four teenagers and their weird ass cat.

Please add more to this in the comments/reblogs if you guys have any other ideas. I love thinking about crossovers so please build onto this if you're insane like me as well. I know a lot of these are superficial but honestly this is all in good fun and I had this really dumb idea I wanted to share.

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