One idea could be that Ranma accidentally stumbles into the world of Sailor Moon. Maybe he gets caught up in a fight against a youma and the Sailor Scouts mistake him for an enemy at first. But then they realize he has his own unique fighting skills and they team up to defeat the common foe.
One common theme is power combination. Writers often explore how the powers of Sailor Moon characters combine with those from the other crossover universe. For example, in a Sailor Moon and Dragon Ball Z crossover, they might look at how Sailor Moon's magic could work with the energy - based attacks in Dragon Ball Z.
Sure. You can find some on popular fanfiction websites. They range from short, fun reads to long, in - depth stories. A lot of them play with the idea of Naruto characters being introduced to the Sailor Moon world and vice versa. It's really interesting to see how the different character dynamics change in these crossovers. Some might be more action - oriented, while others could be more about the characters getting to know each other's cultures.
Another theme is the power of friendship. Both Sonic and Sailor Moon series value friendship, and in crossovers, it's often about how the characters from both sides form bonds and work together. For example, Sonic's loyalty to his friends and Sailor Moon's strong relationships with the Sailor Scouts combine to create a united front against common enemies.
Well, one possible plot could be that the Sailor Scouts are transported to the Pokemon world. They might team up with some Pokemon trainers to fight against a common enemy. Maybe an evil organization is trying to use both the power of the Dark Kingdom from Sailor Moon and some powerful, dark Pokemon. The Sailor Scouts' magical powers could interact in interesting ways with the Pokemon's abilities.
Another theme is the teamwork between the two sets of characters. For example, the Sailor Guardians are used to working together in their own way, and Sam and Dean Winchester have their own dynamic. In these crossovers, they have to find a way to combine their skills and strategies to face the threats. Usually, they start off a bit at odds but gradually learn to trust and rely on each other. This theme of building new relationships across different universes is quite prominent.
Plotting can also be a pain. You need to figure out a reason for these two groups of characters from different universes to meet. It could be some sort of magical portal or a powerful enemy that affects both worlds. Then, you have to decide how they will react to each other, how they will work together (if they do), and what the overall goal of the story will be. There are so many elements from both series to consider that it can be overwhelming when trying to write a good crossover fanfiction.
Well, in such a fanfiction, the art styles could be blended in an interesting way. The Sailor Scouts could have a new look inspired by Batman's aesthetic, like darker colored fuku with bat - like symbols. And Batman could get a touch of Sailor Moon's magic, perhaps his utility belt having some magical items. The story could explore how two very different universes collide, and how the characters grow from the experience.
One interesting plot could be that the Sailor Guardians are on a mission to a world similar to Naruto's. There, they meet Naruto and his friends. Naruto is initially confused by their strange powers but quickly realizes they can help fight a common enemy. Maybe an evil force from the Sailor Moon universe has teamed up with Orochimaru. The Sailor Guardians' magic combined with Naruto's ninja skills could make for some epic battle scenes.
Some Tumblr blogs dedicated to Sailor Moon also share and recommend 'best sailor moon crossover fanfiction'. You can follow these blogs and look for their posts about crossover fics. They often have some hidden gems that you might not find on the bigger platforms.