One possible plot could be that Inuyasha somehow gets transported to the Twilight world. He might initially be confused by the modern settings and the presence of vampires and werewolves. Bella could mistake him for a new type of supernatural being. And Inuyasha, with his sword and combat skills, could get involved in the ongoing feud between the Cullens and the werewolves in Forks.
One good example could be a story where Inuyasha's group somehow ends up in the Twilight universe. Maybe they cross paths with the Cullens. In such a fanfic, the cultural and power differences between the two universes can create interesting conflicts and alliances. For instance, Inuyasha's demon slaying abilities compared to the vampires' powers in Twilight.
Goodreads has some groups dedicated to fanfiction as well. Although it's mainly known for book reviews, these groups can be a hidden gem for finding Inuyasha - Twilight crossover fanfiction. You can also ask in anime or fantasy - related subreddits if anyone has any recommendations. Some users might be into this unique crossover and can point you in the right direction.
One popular trope is the 'fish out of water' situation. For example, characters from Inuyasha's feudal Japan world find themselves in the modern - day setting of Twilight. Another is the power struggle trope. Inuyasha's demon powers and the vampires' powers in Twilight often lead to interesting power dynamics in the fanfics. There's also the love triangle trope, with the main characters from both universes getting involved in complex relationships.
The werewolves in Twilight have their own set of abilities like enhanced strength and pack telepathy. Inuyasha also has his encounters with wolf demons. In a fanfic, the werewolves could team up with Inuyasha against a common enemy, perhaps some powerful demon that has made its way into the Twilight universe. Their combined strength and abilities could create a really dynamic and action - packed story.
Inuyasha and Edward would be really interesting. Inuyasha is brash and hot - tempered, used to fighting his enemies head - on. Edward, on the other hand, is more reserved and calculating. Their different approaches to handling threats and their unique supernatural abilities would create a lot of tension and also some interesting interactions.
One idea could be that Sephiroth somehow gets transported to the feudal era of Inuyasha. He might initially be seen as a great threat due to his power. But as the story progresses, he could form an unlikely alliance with Inuyasha and his group against a common enemy, like a powerful demon that is even more menacing than any they've faced before.
Love across different worlds is also a big theme. For example, a fanfiction might have a character from Twilight fall in love with someone from Inuyasha's world. This kind of love story often has to overcome many obstacles, such as different values, powers, and the reactions of their respective communities. It makes for very interesting and emotional reading.
A popular one is 'The Meeting of Paths'. This fanfiction focuses on a situation where Inuyasha and Sesshomaru meet under different circumstances than in the original series. It has great characterizations, and the way the two interact and gradually change their views of each other is really well - written.
One idea could be that Sakura, with her medical ninjutsu skills, ends up in the Feudal era of Inuyasha. She could help treat the wounds of the villagers who are often attacked by demons. Inuyasha might be initially suspicious of her strange powers but gradually come to respect her as she proves her worth in battles and in healing the injured. For example, when Inuyasha gets seriously injured in a fight against a powerful demon, Sakura's medical skills could be the key to saving him, which would change his view of her.