In a Inuyasha After Story fanfiction, we could see a story where Inuyasha and Kagome's relationship hits a rough patch. Maybe Kagome misses her modern - day life a bit too much and Inuyasha doesn't understand. Meanwhile, there are strange disappearances in the forest near their village. The gang discovers that a new type of demon is luring people and demons into a different dimension. They have to figure out how to stop it. Also, Sango and Miroku's kids could play an important role in helping to solve the mystery, with their own unique skills they've learned from their parents.
Inuyasha college fanfiction can have some really cool plot ideas. For instance, the college could be built on an ancient battlefield, and strange artifacts keep popping up. Inuyasha, with his knowledge of the past, tries to figure out what they are and how to keep them from causing chaos. Another idea is that Inuyasha's half - demon status makes him a target for a group of demon hunters who have infiltrated the college. He has to prove his good intentions while also protecting his friends. And what if there's a time - traveling element? Inuyasha and his friends get sent back in time to the era when the college was first founded and have to deal with the original problems that led to its creation.
One idea could be a story where Inuyasha and Naraku are forced to team up against a greater evil. They start off distrusting each other but gradually come to understand each other's motives. Another could be a what - if scenario where Naraku was redeemed early on and had to work with Inuyasha to protect the Shikon Jewel from a new threat.
One idea could be a modern - day AU where Inuyasha and the gang are in a high - school setting. Inuyasha, the half - demon, could be the new kid who catches the eye of a popular girl. Their relationship could start off rocky due to his rough exterior and her preppy friends not approving. But as they get to know each other better, they find a deep connection. Another plot could be a time - travel scenario where a character from the present day is sent back to Inuyasha's era and falls in love with him while trying to find a way back home. They have to navigate the differences in their cultures and the danger of the feudal era together.
A cool plot could be that there's a tournament across different anime worlds, and Inuyasha and Naruto are chosen to represent their respective worlds. Along the way, they discover similarities in their pasts, like both having some form of demon - related heritage (Naruto with the Nine - Tails and Inuyasha being a half - demon). They also exchange combat techniques. Naruto teaches Inuyasha how to better use chakra control in his attacks, and Inuyasha shows Naruto some unique sword - fighting skills.
The descendant might be born into a time of great unrest in the Naruto world, but their Inuyasha - related powers give them an edge. They could start off as an outcast because of their strange powers, but as they grow and develop, they become a key figure in a conflict. For instance, they might be the only one who can communicate with a group of demons that are encroaching on the ninja villages. By using their unique heritage, they can negotiate peace or, if necessary, fight to protect their home using a combination of ninjutsu and Inuyasha - style combat.
A possible plot could involve the Hollows from Bleach somehow making their way into the Inuyasha universe. Inuyasha and his friends would have to team up with Ichigo and the Soul Reapers to fight them. This would create a really interesting dynamic as the different fighting styles and powers collide. The Hollows might also target the demons in Inuyasha's world, seeing them as a new source of power or prey.
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.
One idea could be that Inuyasha gets transported to the Ouran High School world. He'd be this wild and rough - around - the - edges character in a posh, refined school setting. Maybe he mistakes the Host Club for some sort of demon - like group at first and tries to fight them. Another plot could involve a character from Ouran getting dragged into Inuyasha's feudal Japan world and having to adapt to the lack of modern conveniences and the presence of demons.
One idea could be that Kagome starts to develop feelings for Sesshomaru while still loving Inuyasha. Sesshomaru, on the other hand, is conflicted because he has his own pride and his past views on humans. This would create a very tense love triangle as Inuyasha would be jealous and Sesshomaru would be struggling with his new - found emotions.
Another plot could be Sango getting injured and Inuyasha having to take care of her. It would show his softer side and how their relationship might change as he nurses her back to health. This could also include some flashbacks to their past experiences that made them who they are.