His friends would react in a very concerned and protective way. Hermione would use her intelligence to find the best solutions for his recovery. She might also try to figure out what went wrong on the mission to prevent it from happening again. Ron would be there for Harry no matter what, showing his loyalty. Ginny, being Harry's love interest in many fanfictions, would be extremely emotional. She would be a strong presence by his side, making sure he has everything he needs. The rest of his friends would also come together, forming a support network around Harry, sharing memories and positive thoughts to help him through the tough time of recovery.
His friends would be extremely worried. Hermione would immediately start researching every possible spell or charm that could be used to find him. She might also look into any historical records of similar disappearances during Auror missions.
His friends would most likely rally around him. Kiba might use his dog Akamaru to scout the area and make sure there are no other immediate threats. Hinata would be really worried and would try to use her Byakugan to see if there are any hidden enemies or if Naruto has any internal injuries. Choji would offer some of his food to Naruto to give him strength, as his clan's food can have special effects on a ninja's body.
His other friends like Shikamaru would think of the most practical solutions. He might calculate the risks of continuing the mission with a sick Naruto and come up with a plan. Maybe he'd suggest splitting the group, with some staying to take care of Naruto and others proceeding with the mission - related tasks that can't be postponed.
He could have to take a long time to recover, which might make him feel frustrated and impatient. It could also lead to him doubting his abilities as an Auror for a while.
Hermione would usually be very worried and immediately start looking for ways to heal him. She might use her knowledge of magic to find the right spells or potions to treat his injuries.
The Auror department would likely be in chaos. There would be a lot of self - reflection and blame - sharing. Some might question the safety protocols of their missions. His death could also lead to a decrease in morale among the younger Aurors who looked up to him. In the wider wizarding world, there would be fear as Harry was seen as a great protector. People might start to worry more about their safety.
His friends would be extremely worried. They might immediately drop whatever they are doing to rush to his side. For instance, Thomas would be right there, trying to assess the situation and figure out how to help. He would be filled with a sense of urgency and determination to get Minho the care he needs.
Timmy's friends' reactions can vary. Cosmo might accidentally make the situation worse by using the wrong spell in his haste to help Timmy. Wanda would be more level - headed and try to correct Cosmo's mistakes. Chester and AJ would be really concerned and would try to comfort Timmy. They might hold his hand or tell him that he'll be okay. In some fanfictions, if Timmy is in a coma or seriously injured, his friends would be constantly by his side, waiting for him to wake up and doing whatever they can to speed up his recovery.
Sakura would probably be very angry at Kurenai. She's protective of Naruto and would demand an explanation. She might even try to heal Naruto right away if it was a physical injury.
If his friends continue to ignore him, Harry could become sad and withdrawn himself. He might start to isolate more, spending time alone in places like the Forbidden Forest or an empty classroom. He might also lose his confidence in himself, thinking that he is not worthy of their friendship. In his loneliness, he could focus more on his studies or some solitary magical pursuits, trying to distract himself from the pain of being ignored.