It could be really exciting. Imagine the powerful mages from Fairy Tail meeting the demon - slaying Inuyasha. They might team up to fight a common enemy, like a powerful dark mage who has made a pact with some of the demons from Inuyasha's world. The magic of Fairy Tail and the spiritual powers and swords in Inuyasha could create some really cool battle scenes.
There could be a fanfiction where the magic system in Fairy Tail is introduced to the world of Inuyasha. Kagome might learn some Fairy Tail magic, like fire - based magic similar to Natsu's, which she could use to enhance her powers against demons. This would create a whole new dynamic in her battles and relationships within the Inuyasha world.
One common theme is the clash of different power systems. Inuyasha has his demon powers and sword skills, while Fairy Tail has magic. So, in many fanfictions, they explore how these powers interact, like whether Inuyasha's Tessaiga can cut through Fairy Tail's magic barriers.
You can try fanfiction websites like Archive of Our Own (AO3). It has a large collection of fan - created works, and you can easily search for Inuyasha and Fairy Tail crossovers or related fanfiction using the search function. There are also tags that can help you narrow down your search to specific themes or pairings you're interested in.
A cool plot might be that a dark wizard from Fairy Tail discovers a spell that can open portals to other dimensions and accidentally pulls Inuyasha, Kagome, Shippo, etc. into their world. The Fairy Tail guild decides to help them get back home. But during this time, they realize that there are some similarities between the demons in Inuyasha's world and the dark creatures they fight in their own world. So, they team up. Inuyasha and Natsu could have a friendly rivalry over who is stronger and in the end, they combine their powers to defeat an ancient evil that was awakened by the portal - opening spell.
Well, his tail in fanfiction could be a sign of vulnerability too. Writers might use it as a way to show his softer side. For example, if someone were to grab his tail, it could make him feel really uncomfortable or even weak. It could also be a way for him to show affection in a non - human way, like wagging it when he's happy around Kagome.
Another interesting piece of 'Inuyasha Fairy Tail crossover fanfiction' is the one that focuses on a team - up between Inuyasha and Natsu. They go on a quest together, with Inuyasha's tough exterior and Natsu's fiery personality. Their interactions are really fun to read, like when they argue about who's the stronger fighter or when they have to combine their powers to defeat a powerful enemy.
Gray and Sango might make for an exciting pair. Gray with his ice - make magic and Sango with her weaponry skills. Gray could create ice weapons and structures to assist Sango in battle, and Sango could show Gray some of the more traditional combat techniques. Their personalities are also quite different, with Gray being more laid - back (most of the time) and Sango being very determined and focused on her goals.
Inuyasha and Natsu would be a very interesting pairing. Inuyasha is a half - demon with his own set of powers and a bit of a rough - around - the - edges personality. Natsu is a powerful dragon slayer with a hot - headed and passionate nature. They could start off as rivals, constantly trying to one - up each other in terms of strength and ability, but then gradually become friends as they face common enemies. Another interesting pairing could be Kagome and Lucy. Kagome has her spiritual powers and comes from a different time, while Lucy is a celestial wizard. They could bond over their different magical abilities and their strong wills.
His relationship with other demons could be affected too. They might see his tail as a sign of his strength or weakness. Some demons might be envious of his tail if it has special powers. Others might try to use it against him in battles or to gain some advantage over him. It could also be a way for Inuyasha to bond with other half - demons who also have unique physical features like a tail.