What are some interesting plot ideas for 'fate in time fanfic'?

A great plot for a Fate Tiamat fanfic could be a scenario where Tiamat tries to adapt to the modern world within the Fate universe. She has to deal with human culture, technology, and the other strange things she never encountered before. This could lead to some comical as well as deep and meaningful interactions with the other characters.

A good plot for a Brynhildr Fate fanfic could be a time - travel story. Brynhildr could be sent back in time to a crucial moment in her own history. She could then have the chance to change things that she regretted in her past. Or, you could write about Brynhildr falling in love with a character who is not from her original story. This would create a lot of interesting drama as she tries to balance her new feelings with her duties as a Servant. Also, a story where Brynhildr has to train a new and inexperienced Servant could be quite engaging.

One idea could be to explore an alternate timeline where the main characters make different choices at a crucial moment. For example, if a character who usually chooses to fight decides to negotiate instead, how would that change the course of the story? Another plot could involve a new character being introduced who has a special power that disrupts the existing power balance in the 'game of fate' world. This new character could either be a force for good or evil, depending on their motives.

One idea could be exploring Arjuna's relationship with other Servants in a modern-day setting. For example, how he adapts to living among them and dealing with modern technology.

Another interesting plot could be a time - travel scenario within the 'breach of fate' world. A character goes back in time to try and prevent a certain 'breach' from happening, but in doing so, they create unforeseen consequences that make the situation even more complex.

One idea could be that the Servants from Fate end up in the RWBY world and have to team up with the RWBY characters to fight a new common enemy. For example, a powerful Grimm that has some sort of magic ability similar to a Servant's Noble Phantasm. Another plot could involve the RWBY characters being summoned into the Fate universe and having to participate in the Holy Grail War, but with their own unique skills and abilities that disrupt the normal flow of the war. A third idea might be that a mysterious force starts fusing the two worlds together, and the characters from both have to figure out how to stop it while also dealing with the cultural and power differences between them.

Well, a cool plot for a 'Fairy Tail x Fate fanfic' might be centered around a powerful magical artifact that exists in both universes. The characters from both series start to search for it, and during their journey, they learn about the similarities and differences in their magic systems. Maybe some of the Fairy Tail wizards get mistaken for Servants at first and have to prove their true identity while also dealing with the various factions in the Fate world.

One idea could be that the characters from Teen Wolf end up in the Fate universe and have to deal with the complex magic system there. For example, Scott could try to use his werewolf abilities to control the powerful magical forces in Fate. Another could be a love story where a character from Teen Wolf falls in love with a Fate character, like Stiles falling for a Fate mage. Maybe the Teen Wolf pack has to fight against a common enemy in the Fate world, something that combines the bestial nature of the werewolves with the magical threats of Fate.

Well, perhaps the Pokeballs in this fanfic could be like the Command Spells in Fate Stay Night. A trainer might use a Pokeball to summon and control a powerful 'Pokemon - Servant' hybrid. And the different regions in the Pokemon world could be the battlefields for the Grail War. The trainers would travel around, catching and training their unique Pokemon - Servants while competing for the Grail.

Another plot could involve Naruto being mistaken for a new type of heroic spirit. He then has to prove himself in the Grail War while also trying to find a way back to his own world. Along the way, he could meet some of the Fate characters and learn about their backstories, which would be a great way to combine the two universes.