A playboy weeb from our world, that doesn't know anything about Touhou, gets Frieza-sama powers and the appearance of Killua Zoldyck from Hunter X Hunter, then gets isekai-ed to Touhou Project world. In case you find incorrect information in the story, don't worry, it's not me who didn't know it, but the characters themselves. From chapter 36, 'High school DxD' will be initiated.

Yukari in her daily travel's to the Outside World, stumbles upon a world she finds interesting. In this world pirates across all places come from the seas, in search of the treasure of a deceased man called Gol. D Roger. The One Piece. Yukari then Decides to Throw some of the Inhabitants of Gensokyo to this World to her own amusement. Read the first chapter for info.

a collection of interconnected one-shot where the key figure of W40K universe swapped with Touhou character

Please watch Warmly as Vaishnava Izuku, his wife and a few Gensokyen will make All For One and co. regret every decision they've made. For those who need comfort for the horrible final.

Twenty-one year old Reimu Sanchez has to deal with a myriad of things in her life. Ranging from the dysfunction nature of her family, to her sci-fi shenanigans of her paternal grandfather, to the mystical nature of youkai. How will she fare in her own chaotic life? (Touhou belongs to Team Shanghai Alice, Rick & Morty belongs to Adult Swim. Crossposted on AO3.)

Después de que lo persiguieron por crímenes que no cometió Sonic consiguió escapar de Mobius a un lugar desconocido y decidió quedarse allí por un tiempo para relajarse y calmarse, allí conoce a la Ermitaña de un brazo:Kasen Ibaraki. Sonic The Comic Online x Touhou Project crossover.

Butters and Cirno get trapped on the It's A Small World ride at an abandoned Disneyland.

Captain Toad ends up farting in the methane making world of Touhou.

A what-if scenario following Goro Akechi's disappearance in Persona 5, the charismatic ace detective and cold-blooded assassin winds up in Gensokyo, where he must reinvent himself, make new friends and allies, and confront a force which threatens to drown humans and youkai alike in their worst instincts.

Wishing for a permanent presence in a world that she once helped via Imperial Japan forces, Amaterasu urged Historia Alliance to initiate Project Shoukan. After 7 years, they finally finished the project, and with her blessing, the newly established Historia Shoukan Dominion is transferred to the New World. The Emissaries of the Sun God have returned at last. (Touhou/Japan Summons)

After the short-lived Kira Incident comes to a close; or so they thought, occurences cause them to take interest in the ongoing Kira case in the Outside World. Out of their own interest and mild annoyance, they seek to stop Kira discreetly. Rated T due to death.

The Touhou girls learn the hard way to not mess with the dinosaurs of Jurassic Park.

Doc Brown finds a bunch of Touhou girls around him while he's visiting Universal Studios Florida.

When Hardy created the Gate in Ginza, she noticed a barrier. Finding another land behind it, she excitedly placed a second Gate within. Little did she know, the aftermath would force Gensokyo to leave the shadows and reveal itself to the world once more. Japan and Falmart will never be the same, for the monsters that once lurked within the dark have returned, and they plan to stay.

Una chica normal, Yuni, tras una experiencia que cambia su vida para siempre, se embarca en un viaje hacia una tierra olvidada de Magia y Youkai. Sin embargo, nuestro grupo de heroínas de la Luna decide investigar más a fondo las circunstancias de Yuni, terminando todas atrapadas a la mitad de un...Incidente.

Mokou gets a job at Freddy Fazbear's Pizza as a night guard. It goes about as well as you'd expect.

At this point you can already expect stupidity from both of these properties.

Youmu winds up in Westeros outside of Winterfell. Her journey will take her through the events of Game of Thrones and her allegiances will change. But will her loyalty to Yuyuko remain when she leaves?

The term kami usually refers to the deities of the Shinto religion. There are countless gods in Shinto and I, Hikigaya Hachiman is unfortunate enough to be a disciple of one.

The Touhou girls find their way to Pinata Island to embrace their inner party animal!

Gassy Pokegirls know how to make the Touhou world feel stinkier than usual!

The Touhou girls get trapped in Tetris.

Farting girls from Touhou happen to fit well within the confines of Fortnite!

Farting around the television set makes the Touhou girls go into the TV to a world projected beyond their imagination!

Dos humanos descubren que su universo no es el único, abriéndose a la posibilidad de que existan realidades aún más extrañas. Pronto se dan cuenta de que están destinados a desempeñar un papel crucial en un evento trascendental. Juntos, emprenden un viaje más allá de la lógica, donde los límites se desvanecen. (Fase Beta) (Rating T aunque si avanzo podría aumentar por momentos a M)