In this fanfiction crossover, the settings would be a major aspect. The walls in Attack on Titan are a key part of the story, and how would they compare to the various locations in Lunar Chronicles? The desolate landscapes outside the walls might seem similar to some of the more dangerous areas in the Lunar Chronicles world. The Titans could be seen as a new kind of threat that the Lunar Chronicles characters have never faced before. It would also be interesting to see how the power dynamics in both universes interact. The power of the Titans versus the power of the technology and magic in Lunar Chronicles.
Well, it could be really interesting. The post - apocalyptic world of Attack on Titan with its giant Titans and the complex political and survival aspects could blend with the sci - fi and fairytale elements of Lunar Chronicles. Maybe the characters from Attack on Titan would find themselves in the high - tech yet also fairy - tale - like settings of Lunar Chronicles. They'd have to deal with the new technology and the different social structures there. And vice versa, the characters from Lunar Chronicles might be shocked by the Titans in the Attack on Titan world.