Anime Crossover: In Demon Slayer, Crossing Worlds with Tokyo Ghoul

[Demon Slayer + Tokyo Ghoul + some original plotlines woven together + unknown worlds to come] From the start, the protagonist Ye Fan arrives in the world of Demon Slayer carrying a book called A Guide to the Myriad Worlds. He gains the ability to transmigrate to the world of Tokyo Ghoul. By using his knowledge of both stories, he gains new abilities every time he completes a certain amount of progress in conquering a world. Once his progress reaches 100%, he gains permanent access to that world and unlocks the next one. With A Guide to the Myriad Worlds, Ye Fan rises to the top. [Tokyo Ghoul world progress: 10%. Half-human physique acquired.] [Tokyo Ghoul world progress: 30%. Quinque IXA acquired.] [Demon Slayer progress: 10%. Enhanced lung capacity mastered; Thunder Breathing basics learned.] [Demon Slayer progress: 30%. Thunder Breathing mastered perfectly.] In the world of Demon Slayer, Ye Fan wields a Quinque and chases after a certain scummy boss. “Muzan! Take a look at my big IXA! I'm going to stick it right through you!” In the world of Tokyo Ghoul, Ye Mu wields a Nichirin Blade, lightning flashing beneath his feet. “Arima, Eto, get a taste of what the strongest human can do.” When progress in a world reaches 100%, Ye Mu can bring people from that world out with him and turn them into fighting power.