A good plot could involve Inuyasha turning human at unexpected times. This creates a lot of chaos as his friends are used to his demon form. For instance, they might be in the middle of a battle with a powerful demon, and suddenly Inuyasha turns human. His friends then have to protect him while also trying to figure out how to turn him back. It could also be interesting if his human form has some sort of hidden power or connection that they discover during this time.
One plot idea could be that an ancient spell backfires on Inuyasha. Kagome has to take care of baby Inuyasha while also trying to find a way to reverse the spell. Maybe she has to search for a rare herb that only grows in a dangerous, demon - infested area.
One plot idea could be that Inuyasha, as a girl, has to deal with different reactions from the other characters. For example, Miroku might be more hesitant to touch her inappropriately as he used to do sometimes with Inuyasha in his male form. Kagome could be both confused and intrigued, and they might have to re - evaluate their relationship. Another idea is that Inuyasha in female form has different powers or a different way of using her existing powers, which leads to new adventures and challenges in fighting demons.
One plot idea could be that Erin, after turning into a werewolf, tries to hide it from her family and friends. She struggles with the new instincts and the fear of hurting those she loves. Another idea is that she discovers there's a whole underground community of werewolves and has to learn their rules and ways to survive. Or perhaps she meets a vampire who is intrigued by her new werewolf status and they form an unlikely alliance.
One idea could be that as Bill turns human, he has to deal with human emotions like love and empathy for the first time. He might struggle to understand why people cry or laugh, which could lead to some comical and also poignant moments.
One idea could be that a human accidentally stumbles upon a time - related artifact that starts the transformation process into a time baby. As a time baby, they have the ability to briefly glimpse into different time periods, which they use to prevent a great disaster in the future.
Another interesting plot could be that there is a curse that forces Inuyasha to live as a human permanently. Kikyo, who has always been conflicted about his demon side, now has to deal with a fully human Inuyasha. They could start a new life in a small village, but old enemies still lurk. They have to use their wits and the skills Kikyo has as a priestess to fend off these threats, and in the process, they fall in love all over again in this new human - centered context.
Kagome is an obvious choice. She has a strong bond with Inuyasha already, and when he turns human, their relationship could take on new dimensions. She might have to be more protective of him, or they could have different kinds of interactions. Miroku is also interesting. His wisdom and his own goals could play a role in helping Inuyasha deal with being human. He could offer advice on how to handle the new situation, or he might have some knowledge about the cause of Inuyasha's transformation.
One plot idea could be that Inuyasha and Kagome are paired up for a college project. They start off bickering like in the original series but gradually grow closer as they work together. They could discover a hidden mystery on campus that relates to their past lives.
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.