Sakura would be extremely proud. She has seen Naruto grow from a clumsy kid to a potential Hokage. She'd probably be right by his side, offering her medical skills to support him and also giving him advice when it comes to dealing with the more diplomatic aspects of being Hokage. Shikamaru, on the other hand, would be a bit more reserved in his reaction. He'd recognize the huge responsibility Naruto has taken on and would be ready to offer his strategic mind to help Naruto make important decisions.
Naruto would probably be extremely hurt. He has always looked up to the Third Hokage as a grandfather figure. So, initially, he would be in denial, thinking there must be some misunderstanding.
When Team Minato meets Hokage Naruto in a fanfiction, their reactions would depend on their individual personalities. Minato would be overjoyed and would immediately start asking Naruto about his achievements and how he has led the village. Kakashi would be his usual calm self but would show his admiration through his words and actions. Obito, who has had a difficult journey, might initially be hesitant but then would be inspired by Naruto. Rin would be the most excited, perhaps jumping up and down and saying how wonderful it is that Naruto is the Hokage. This encounter could also lead to a deeper understanding between them all and a strengthening of the bonds between generations.
The villagers' reaction would be a mix of excitement and some concerns. On one hand, Naruto's popularity among the younger ninjas is huge. His friends like Sakura and Shikamaru would be his biggest supporters and help him in his new role. However, some of the more traditional clans might worry that Naruto's unorthodox ways could disrupt the long - established order in the village. But over time, as Naruto shows his ability to balance his unique style with the responsibilities of the Hokage, they'd come around.
He might be extremely disappointed and angry. Naruto has always dreamed of becoming Hokage, so this ban would be a huge blow to him. He could lash out at those he believes are responsible.
There would be a group of people who understand his decision. They might have seen how much Naruto has sacrificed and how tired he must be. They would support him in his choice to step down and hope he can finally have some peace in his life. For instance, his close friends like Shikamaru might be among those who support his decision.
There could also be friends who are so loyal to Naruto that they would consider following his request if they truly believe it's for the greater good. However, they would be deeply pained by it. Kakashi, for instance, might understand Naruto's selfless nature but would also struggle with the moral and emotional implications of taking his life.
Sakura would be extremely distraught. She has always cared deeply for Naruto, and seeing him in such a dangerous situation would make her rush to his aid immediately. She might use her medical ninjutsu to heal him if he's injured. Kakashi, on the other hand, would be shocked but also proud that Naruto has the courage to face his inner demons in such a drastic way. He would try to understand Naruto's motives and help him get back on track.
Sasuke would be furious. He already has a strong sense of justice and loyalty to Naruto. He'd likely immediately start looking for Naruto, using his Sharingan to track any possible leads. He might even go against the village rules if he thought the village was involved in Naruto's kidnapping.
Sakura might be really surprised at first. She could offer to help Naruto with his girl disguise, teaching him things like how to do his hair or choose the right clothes. She might also find it a bit funny but would be supportive in the end, seeing it as part of a mission. Sasuke, on the other hand, might be a bit more aloof. He would probably just raise an eyebrow at Naruto's new look but wouldn't make a big fuss about it as long as it was for a good reason.