What are some interesting ideas for a 'seraphim sans crossover fanfiction'?

One idea could be a crossover where Sans from the game enters a human world during a major historical event like the Industrial Revolution. He could interact with inventors and workers, his magic and unique personality causing all sorts of comical and thought - provoking situations.

One idea could be a cross with a classic fairy tale. For example, Sans from Undertale could be in a world where he meets characters from Cinderella. He could use his unique abilities to help Cinderella in a new and unexpected way. Maybe he uses his shortcuts to quickly gather all the things she needs for the ball or to outwit the evil stepmother.

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.

Well, you could write a fanfiction where the Nine - Tails in Naruto has some sort of connection to a powerful entity in the Seraphim universe. This connection could lead to a series of events that require Naruto and the Seraphim characters to work together. Or perhaps a character from Seraphim is reincarnated as a ninja in the Naruto world and has to adapt to the new way of life while still having some of their Seraphim abilities.

A third storyline could focus on a mystery. There are strange happenings around Sans Seraphim High School, like students disappearing without a trace. The characters from High School DxD start to investigate and uncover a dark secret that has been hidden for a long time, perhaps something related to an ancient evil that is now awakening.

One interesting sans crossover fanfiction could be where Sans from Undertale crosses over with the world of Harry Potter. He might use his unique abilities like teleporting to surprise the wizards in Hogwarts. Another could be a crossover with the Pokémon world, where Sans teams up with Pikachu. Maybe he'd use his bone attacks along with Pikachu's electric shocks to battle villains.

A plot could revolve around an accident that causes their universes to merge partially. Underfell Sans and Sans find themselves in a strange new reality where they have to figure out how to get back to their own universes. Along the way, they learn about the differences and similarities in their lives, and this leads to some really interesting character development.

One interesting concept could be the clash of different universes' rules. For example, when Sans from the Undertale universe meets characters from other crossovers, the way their powers interact. Sans' unique abilities like teleporting and bone attacks might be affected by the new environment or powers of the crossover characters.

One interesting concept could be how Sans' unique abilities from his original game would interact with the RWBY universe. For example, his teleportation might be a new and unexpected skill in RWBY battles. Another concept could be the character interactions. Sans' laid - back personality could create some really fun and comical exchanges with the more serious or energetic RWBY characters like Ruby or Weiss.

One interesting idea could be a crossover with "Moana". Elsa's ice powers and Moana's connection to the ocean could create a really cool dynamic. Maybe Elsa accidentally freezes part of Moana's ocean and they have to work together to fix it. Another could be with "Tangled". Rapunzel's long hair and her adventurous spirit combined with Elsa and Anna's journey in Frozen 2 would be exciting. Rapunzel could use her hair to help them climb mountains or cross chasms. A third idea is a crossover with "Beauty and the Beast". Belle's love for books and knowledge could help Elsa understand more about her powers and the history of magic in the Frozen world.