Crabbe and Goyle might be a bit confused. They are used to following Draco and might not understand why he would do something so out of the ordinary. But they would still stand by him, mostly because they are loyal to Draco more than they care about his hair color.
Blaise Zabini might be amused. He would probably tease Draco a bit at first, but then support him because Blaise is often portrayed as someone who is confident and not overly bound by convention. He might even give Draco some tips on how to make the hair color look even better.
Others might be a bit shocked at first. But after getting used to it, they could come around. For example, they might initially tease him a little but then realize it's just Harry being Harry and trying something new.
His Slytherin friends might be initially shocked. Some could mock him for wanting something so 'cute' and un - Slytherin - like. But others might secretly support him, like maybe Pansy could see how much it means to him and help him keep it a secret from those who would oppose.
He could also be very kind and gentle in his reaction. Percy might not want to hurt his friends' feelings, so he'd try to let them down easy if he doesn't feel the same way. He might say something like 'You're a great friend, and I value our friendship so much' to show that he cares about them but not in that romantic way. On the other hand, if he has some hidden feelings for one of them, he could start to show more interest in return, like spending more time alone with that friend.
Sakura would be very worried. She would immediately try to find a medical solution, using her knowledge as a medical ninja. She might be disgusted by the worms at first, but her concern for Naruto would override that.
Hermione could also be very hurt. Her hair is part of her identity, and having Draco, who she already has a strained relationship with, do something so cruel would cut deep. She might go to her friends, Harry and Ron, for support. They would likely be just as angry as she is and plot some sort of revenge against Draco and his Slytherin friends.
Shikamaru, being the laid - back yet perceptive friend, would probably think that Naruto has a plan. He would be concerned but also understand that Naruto is not one to make hasty decisions without a good reason. He might keep an eye on Naruto's family in his absence and hope that Naruto will return safely one day.
Hermione's friends from Gryffindor would be a mix of disbelief and concern. Neville, for example, would be worried that Draco might be using Hermione in some way. Luna would be more accepting, seeing it as a unique and interesting relationship that defies the norms of the wizarding world. As for Draco's friends from Slytherin, they would also be shocked. Some might see it as a betrayal of Slytherin values, while others might be intrigued by the power dynamics at play between a Muggle - born witch and a pure - blood wizard.
Harry and Ron would probably be shocked at first. Ron, especially, might have a hard time accepting it because of his past relationship with Hermione. But eventually, they would come around because they care about Hermione. Ginny would likely be more open - minded and try to be supportive. Other friends from Hogwarts might also be divided, some might be against it because of the long - standing rivalry between the Gryffindors and Slytherins, while others would see it as a chance for unity in the wizarding world.
Some of Naruto's friends could be really enthusiastic about his new friendship with Tora. Choji might offer Tora some of his favorite snacks. Ino could try to dress Tora up in cute little outfits. However, Neji might be a bit skeptical at first, thinking that Tora could be a distraction for Naruto. But as he sees the positive impact on Naruto, he would come around.
Annabeth would probably be a mix of amused and exasperated. She might tease him a bit at first but then help him out if he's in an uncomfortable situation because of the dress. Grover would be really shocked at first but then try to be supportive. He might say something like 'Well, Percy, you look... different, but it's okay!'. As for Tyson, he would just be happy to see Percy and not really care about the dress all that much.