First, decide which two universes or characters you want to cross with Sans. This is crucial as it will set the tone and direction of your story. Then, do some research on both. If it's a crossover with a game or a book you're not familiar with, make sure you know the basic rules, settings, and character traits. For example, if it's a crossover with a Final Fantasy game, understand the magic system and the different races.
Once you have the initial setup, start developing the plot. Maybe there's a conflict in this new world that only Sans can help solve. Or perhaps he has to find a way back home while dealing with the challenges of the new place. Keep in mind the pacing of the story. Don't rush through important events and give enough space for character development. Also, don't be afraid to add some humor or unique twists to make your cross sans crossover fanfiction stand out.
Begin by creating a basic plot outline. Maybe Sans is on a quest in the human world, or he's there by accident and just wants to get back home. Then, develop your characters. Besides Sans, create interesting human characters that he'll interact with. Their personalities and backstories will drive the story forward. For instance, you could have a young scientist who is fascinated by Sans' abilities and tries to study him, which could lead to all sorts of adventures and conflicts in the story.
First, decide on the two universes you want to cross over. For example, if it's with a magical girl anime universe, figure out how Seraphim Sans fits into that world. Then, create a basic plot. Maybe he's lost his powers and has to team up with a magical girl to get them back. Next, start writing an introduction that grabs the reader's attention, like starting with a strange event that brings Seraphim Sans into the new universe.
First, replay the game to get a fresh feel for the characters, settings, and story. Then, pick a concept or idea that you're passionate about, like a character relationship or an unexplored part of the game's lore. Start with a simple outline, including the beginning, middle, and end of your story. Don't worry too much about grammar at first, just get your ideas down on paper (or on the screen).
First, get to know the character of Nightmare Sans well. Read as many existing fanfictions about him as you can to understand his traits. Then, come up with an interesting concept. It could be something like 'What if Nightmare Sans lost his powers?'. Start with a strong opening scene that grabs the reader's attention.
First, you need to create your original character (OC). Think about their appearance, personality, and backstory. Are they a shy mage? Or a bold adventurer? Then, consider the relationship you want your OC to have with Sans. Once you have these basics, start planning a simple plot. It could be something like your OC getting lost in the Underground and Sans helping them. Begin with an engaging opening, like a description of your OC's first encounter with Sans or the strange situation that brings them together.
First, get to know the original character of Sans well. Understand his traits, his sense of humor, and his relationships in the game. Then, think about a situation that could cause him 'hurt' - it could be physical or emotional. For example, a betrayal by a friend.
First, choose the world you want to cross RWBY with. Then, think about how the characters from both sides would interact. For example, if it's a RWBY and Lord of the Rings crossover, consider how Ruby would react to meeting hobbits or Aragorn. After that, plan out a basic plot. Maybe the RWBY characters are brought to Middle - earth to help fight Sauron. Start writing simple scenes to get the story flowing.
To start a Kakuzu crossover fanfiction, you need to have a clear goal for the story. If it's a crossover with the DC universe, you could start with Kakuzu arriving in Gotham City. He might start causing chaos as he tries to amass wealth in this new, unfamiliar place. Think about how the existing characters in the DC universe, like Batman, would react to him. Build on these interactions, adding in elements of Kakuzu's backstory and motives to create a complex and engaging narrative.
First, you need to have a good understanding of the Asura lore. Know their culture, powers, and how they interact in their own universe. Then, choose the other universe you want to crossover with. Research that universe thoroughly as well. After that, think of an interesting plot point that could bring these two universes together. For example, a mysterious portal that connects the Asura world to the other.
First, decide which universe or character you want to cross Beerus with. This is crucial as it sets the tone and direction of your story. For example, if it's a crossover with the Naruto universe, think about how Beerus' powers would interact with ninjutsu. Then, create an interesting starting point. It could be Beerus accidentally landing in the Naruto world due to some sort of space - time rift.