One plot idea could be kagome getting involved in the vampire - werewolf conflict in the Twilight world. Maybe she has some unique powers from her own world that could change the balance. Another idea is that kagome and Bella become friends and kagome tries to help Bella deal with the supernatural chaos around her.
Some fanfictions might explore the idea of kagome being a long - lost relative of one of the Twilight characters. For example, she could be related to a vampire or a werewolf. This would create a whole new set of relationships and storylines. Another plot could involve kagome using her knowledge of magic and the feudal era from her own world to teach the Twilight characters new ways of fighting or protecting themselves. It could also be interesting if kagome's presence in the Twilight world starts to change the rules of that world, like how vampires and werewolves interact with each other.
Well, a plot could involve Naraku being cursed to feel all the pain he has caused, and Kagome is the only one who can ease his suffering. So he has to follow her around. Or perhaps in a fanfiction, Naraku and Kagome get trapped in a magical realm where they have to rely on each other to survive. Also, a story could be about Naraku having a split personality, and one part of him is attracted to Kagome and tries to break free from his evil self to be with her.
One interesting plot idea could be exploring how different characters adapt to the post - apocalyptic world in new and unexpected ways. For example, a character who was once a timid office worker becomes a fearless scavenger.
Another idea is that Bankotsu gets injured and Kagome, with her kind heart, decides to nurse him back to health. During this time, they have long conversations about their different worlds. Bankotsu shares his tales of battle and Kagome tells him about her own world and the friends she has left behind. This leads to a mutual respect and a budding relationship.
One idea could be the challenges they face in protecting their unborn child from the various demons that still lurk. Another could be how their relationship evolves during the pregnancy, with Inuyasha becoming even more protective. Maybe Kagome has to deal with newfound powers or sensitivities related to the pregnancy.
Another plot could involve the Phantom being intrigued by Kagome's unique appearance and abilities. He might see her as a new kind of muse and try to incorporate her into his grand plans for the opera house. However, Kagome is determined to bring a positive change to the dark and brooding atmosphere of the place. She could start by befriending the other performers and gradually influencing the Phantom as well. For example, she might introduce him to the concept of forgiveness and redemption through her own cultural beliefs.
A possible plot is that a dark force in both the Inuyasha universe (connected to Kagome) and the Vampire Knight world is trying to take over. Kagome and the main characters from Vampire Knight, like Zero and Kaname, have to work together. Kagome's knowledge of magic and spiritual energy could be combined with the vampires' powers to combat this threat. They might start off distrusting each other but gradually learn to rely on one another.
One plot idea could be that Koga and Kagome accidentally end up in a situation where they have to take care of a baby together. Maybe they find the baby in the forest and have to figure out how to keep it safe while also dealing with their own feelings for each other. Another idea is that a magic spell causes them to have a baby of their own in a strange, otherworldly way. This would lead to a whole new set of challenges as they navigate being new parents in a world full of demons and magic.
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 idea could be that the baby has some unique powers that are a combination of Kagome's spiritual powers and Sesshomaru's demon abilities. This could lead to various adventures as they try to protect the baby from those who might want to use its powers for evil.
Maybe Kagome is mistaken for a new ninja from a far - off land. She has to quickly learn the ways of the ninja while also trying to find a way to return to her own time. Naruto could be the one to help her adapt and in the process they learn from each other's unique abilities.