How would the other characters react if Chihiro turns into a spirit in a fanfic?

The other Pokemon in the Pokemon Center where Pikachu is usually treated would be very frightened. Nurse Joy would be at a loss as to what to do, as she has never seen Pikachu act this way. Professor Oak would be extremely concerned and would start researching immediately to find out what could have caused this sudden change in Pikachu. Team Rocket, on the other hand, might initially see this as an opportunity to capture Pikachu more easily, but they would soon realize that an evil Pikachu is far more dangerous than they expected and might end up getting in over their heads.

One possible plot could be that Chihiro, after some kind of encounter with a powerful spirit or magic in the spirit world, gradually starts to transform into a spirit herself. She might first notice small changes like her body becoming more translucent. As she turns into a spirit, she could gain new abilities, such as the power to communicate with plants and animals in a way she couldn't before. She might also face challenges as the other spirits don't know how to react to her transformation. Some might be scared, while others might see her as a threat or an opportunity.

Sasuke might be extremely suspicious. He has a long - standing relationship with Orochimaru, and this sudden change would make him wonder if it's a new trick. He would keep a close eye on her to see if she's still the same threat.

The Joker would probably be both delighted and a bit confused. He's used to Batman being his nemesis, but an evil Batman would change the dynamic. He might initially see it as a new and exciting game, but then realize that an evil Batman could be a real threat to his own chaotic existence. The Joker might try to manipulate the situation to his advantage, but it could easily backfire on him.

Zazu would be flustered. He's used to reporting to the grown - up Simba and giving advice. With Simba as a baby, he would be at a loss for a while. He would try to maintain order in the pride but would also be constantly worried about Simba's safety. The hyenas, if they got wind of this, would see it as a chance to cause chaos. They might try to attack the pride while they think Simba is vulnerable. But the pride, united by their love for Simba (even in his baby form), would be ready to defend their king and their territory.

The Beast would be very confused at first. He has been the one with the beastly form for so long, and now seeing Belle in that state, he might feel a sense of guilt as if it was his fault. He would be protective of her, though, and try to help her adjust. Gaston, on the other hand, would probably see this as an opportunity to prove his 'heroism' by trying to 'save' Belle from her new form, but really he just wants to show off. Belle's father would be heartbroken and try to find a cure for his daughter, using his knowledge of inventions and books.

Tails would probably be very curious and eager to figure out how to change Sonic back. He might study Sonic's new form scientifically. Knuckles, on the other hand, would be a bit more confused but still stand by Sonic's side. Amy might be initially jealous because she's used to being the main female around Sonic, but then she could become a great friend and help Sonic adjust. Dr. Eggman would likely see this as an opportunity to take advantage of Sonic's confusion in her new form.

Germany might be really confused at first. He's used to Prussia as his older brother figure, so seeing Prussia as a girl would be a big shock. He might be a bit protective in a different way than before. Italy would probably be very excited and might even start flirting a bit. He's always been a bit of a ladies' man, so he'd be intrigued by this new female Prussia.

Jiraiya would have a very interesting reaction. Since he's a bit of a pervert in the series, he would have to really adjust his behavior. He might also see this as an opportunity to study the differences in chakra and fighting styles between male and female ninjas while also trying to guide Naruto in this new form.

Some characters might be very shocked at first. For example, Sandstorm, if she was in a relationship with Firestar before, would be confused and have to re - evaluate her feelings. But others, like Graystripe, might be more accepting and just see it as another change that they have to adapt to. Younger cats in the clan would probably be more curious and excited about this new Firestar.