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.
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 possible scenario could be that Pikachu is exposed to a strange type of energy. This energy mutates its genetic structure, slowly transforming it into a human form. At first, Pikachu might be confused and scared, not understanding its new body. But as time passes, it starts to learn about human ways, like walking on two legs and using its hands to pick things up.
There is no such thing as Inuyasha becoming a woman in a novel because Inuyasha is a Japanese manga character and his image is usually depicted as a male. Although some novels and manga depicted Inuyasha as a female character, this was usually based on fictional plots or settings rather than his real gender.
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 way a human could 'turn into' Zelda fanfiction is through creative writing. If a person is deeply inspired by the Zelda universe, they can start by imagining themselves as a character within it. For example, they could write about waking up in Hyrule, with all its unique landscapes and creatures. They might describe their experiences, like facing off against Bokoblins or exploring ancient dungeons. By using vivid details and elements from the Zelda games, they can create a fanfiction that is centered around their 'human' self in the Zelda world.
One idea could be that Optimus Prime turns into a human mechanic. He uses his knowledge of machinery from his days as a Cybertronian to revolutionize car repair in a small town. People are amazed by his skills and he secretly uses his new form to keep an eye out for any Decepticon threats.
One idea could be that Jack Frost turns into a human to experience the warmth of human emotions. He might find himself in a small town during winter. As a human, he discovers the joy of a hot drink on a cold day, something he never truly understood as a spirit. He could also fall in love with a local girl who is kind - hearted and loves the winter. This newfound love makes him question whether he wants to return to his former state or stay human forever.
These alliances can also be a source of character growth. A human character might start off being afraid of demons but through an alliance, learn to see them in a different light. Similarly, a demon might gain a new perspective on humans. In some fanfictions, the alliance might even lead to a change in the social structure of the Inuyasha universe, with humans and demons starting to co - exist more peacefully. This is often a long and difficult process as there are many prejudices on both sides to overcome.