Naruto's reaction would be complex. He would be devastated, of course. But he also has a strong will. He might isolate himself for a while to process his emotions. Then, he could start investigating the root cause of the betrayal. If it was due to a misunderstanding, he would try to clear it up. If it was something more malicious, he might try to find a way to redeem his friends or, if necessary, oppose them while still holding onto the hope that they can be saved.
At first, Naruto would be in disbelief. He has always trusted his friends wholeheartedly, so this would be a huge blow. He might then feel a deep sense of anger and sadness. However, Naruto being Naruto, he would likely also start to look for ways to prove his innocence or the misunderstanding. He might go on a journey of self - discovery to figure out what went wrong and how he can win back his friends' trust, all while dealing with the pain of the betrayal.
Naruto might initially be in shock. He has always believed in his friends, so the betrayal would be a huge blow. He could try to reason with them at first.
He could then feel a deep sense of anger. Naruto has a temper, especially when it comes to those he loves. He might vow to find out the reason for the betrayal and make things right, or if it was truly malicious, seek revenge in his own Naruto - like way, which would involve trying to understand the person's motives even while being angry.
At first, Naruto would likely be shocked. He has always been so loyal to his team, and this sudden betrayal would be a huge blow. He might stand there in disbelief, unable to process what's happening.
He would be heartbroken. Naruto values friendship above almost everything. At first, he might not believe it and try to reason with his friends.
Naruto would be extremely hurt. He values his friends above almost everything, so their betrayal would be like a knife to the heart. At first, he'd probably be in disbelief and try to reason with them. When he realizes they won't listen, he might become angry and lash out. But deep down, he'd still hope to win them back.
He could also get angry. Naruto has a strong sense of justice and loyalty. So, being betrayed might fuel his anger, and he could set out to prove his innocence on his own. He might go on a journey to find evidence that clears his name and also to become stronger so that he can face his former teammates if they become enemies. He might also start to rely more on other friends outside of Team 7, like Shikamaru or Rock Lee, who might believe in him from the start.
At first, Naruto might be in shock. He has always trusted his friends, so the sudden betrayal would be a huge blow. He could be silent, unable to process what has just happened.
Sakura would be heartbroken. She's always seen Naruto as a dear friend. But she also has a strong sense of justice. So she would be conflicted, wanting to believe Naruto is innocent but also being influenced by the evidence against him.
I think his friends' reactions would be mixed. Kakashi would be that calm and collected presence, giving Naruto some words of wisdom about this new chapter in his life. Hinata might be a bit sad at first because she had feelings for Naruto, but she would also be happy for him. The rest of the Konoha 11 would be excited. They would see it as an opportunity for Naruto to bring about new changes not just in Konoha but in the whole ninja world. They would all gather around to support Naruto and make sure the marriage goes smoothly.
Naruto might initially be in shock. He's a person who values friendship highly, so being betrayed by Mirajane would be a huge blow. He'd probably first try to talk to her, to understand why she did it.