One possible plot could be that Kagome from 'Inuyasha' accidentally stumbles into the world of 'The Melancholy of Haruhi Suzumiya'. Haruhi, being Haruhi, decides to make Kagome part of her SOS Brigade. Kagome then has to deal with Haruhi's wild ideas while also trying to find a way back to her own world.
A great plot could be centered around a common enemy. Let's say a powerful demon from Kagome's world somehow crosses over into Haruhi's world. Kagome teams up with the SOS Brigade to fight it. Haruhi, with her unpredictable nature, comes up with some really out - of - the - box strategies. Kagome, on the other hand, uses her knowledge of demons and her spiritual powers. Along the way, they learn about each other's worlds and grow to respect one another's abilities.
Well, perhaps in the crossover, there's a mysterious force that links the two universes. Kagome's spiritual powers are detected by Haruhi's group. They think she's some kind of alien or esper at first. Kagome has to prove she's from another world entirely. Meanwhile, Haruhi is intrigued by Kagome's ability to travel through time, which is something she wishes she could do more directly. So she ropes Kagome into all kinds of experiments, much to Kagome's dismay.
One possible interesting plot could be that Haruhi, with her unpredictable and reality - bending nature, somehow stumbles into Kagome's world. Haruhi, being curious and always seeking new things, might start interfering with the normal order of Kagome's quest to defeat demons and retrieve the Shikon Jewel. For example, she could accidentally change some of the rules of the demon world, creating chaos that both she and Kagome have to deal with. This would force Kagome to not only deal with the regular threats but also with Haruhi's unorthodox ways of handling things.
I think Kagome and Kyon would have some interesting exchanges. Kyon is the voice of reason in the SOS Brigade, and Kagome coming from a different world with different rules would challenge his view of things. He might be skeptical of her at first, but as they interact more, he'd start to see that there's more to her world than he thought. And Kagome would be intrigued by Kyon's sarcastic yet practical nature.
Kagome is also a great choice. Her knowledge of the feudal era and her spiritual powers would make her stand out in Haruhi's world. She could be the one to introduce a sense of mystery and ancient wisdom to the modern and often zany world of the SOS Brigade. Also, seeing how she adapts to Haruhi's world and tries to find a way back to her own while dealing with Haruhi's wild ideas would be really engaging.
Another plot could involve kagome in the 'Fullmetal Alchemist' universe. Since she has experience with magic and the supernatural, she might be able to assist the Elric brothers in their search for the Philosopher's Stone. She could use her knowledge of different realms to find clues that they missed.
One plot idea could be that Kagome is transported to the world of Princess Princess. She could be mistaken for a new student in the all - male school and have to navigate the strange rules and hierarchies there. Maybe she uses her miko powers to help solve some problems in the school that are related to an ancient curse.
One possible plot could be that Kagome somehow gets transported into the Lab Rats' world. Maybe she mistakes their high - tech lair for a strange youkai (demon) lair at first. The bionic heroes could be initially suspicious of her, but then realize she has her own kind of 'powers' in the form of her spiritual abilities and her sacred arrows. Together, they could team up to fight a common enemy, perhaps an evil scientist who wants to use both Kagome's spiritual energy and the bionic technology for his own malicious purposes.
Another interesting concept is that a Vocaloid character becomes curious about Kagome's world and follows her through the well. In Kagome's world, the Vocaloid has to adapt to a new way of life without modern technology. Meanwhile, they both face a common enemy - a demon that is attracted to the Vocaloid's unique energy. They must learn to work together using their different skills to defeat it.
Well, perhaps a crossover could explore the cultural differences between the feudal - era - like world of Inuyasha (where Kagome is from) and the ninja - based society in Naruto. How would Kagome adapt to the ninja world and vice versa? And how would their friends from their respective worlds react to this new situation?
One concept could be the exploration of different settings. Maybe the fanfiction combines the traditional settings of the 'kagome' world, like ancient Japanese - inspired landscapes, with the more modern or out - of - this - world settings related to 'lemon'. This can create a really visually interesting and engaging backdrop for the story.
Well, for 'kagome anime x crossover fanfiction', you could do a crossover with 'Attack on Titan'. Kagome's ability to sense spiritual energy might help in detecting Titans before they are visible. Or a crossover with 'Fullmetal Alchemist'. Maybe Kagome's knowledge of ancient magic could assist the Elric brothers in their search for the Philosopher's Stone. Also, a crossover with 'One Piece' where Kagome could join the Straw Hat crew and use her powers during their adventures on the Grand Line.