Sakura's female friends might be really excited for her. They could start planning all kinds of things for the new couple, like double dates. Shikamaru would probably just roll his eyes and say something like 'What a drag, but good for you two.' And Kakashi would give them a knowing smile and some advice about how relationships can be as difficult as the toughest ninja battles.
The other Konoha 11 members would have mixed reactions. Some, like Ino, might be a bit jealous at first because she has her own history with Sakura. But then she would be supportive. Kiba might tease Naruto a lot about it, saying things like 'Finally, you got the girl, loser.' And Hinata would be quietly happy for Naruto, even though she once had feelings for him herself. She's a kind - hearted person and would wish them well.
Iruka - sensei would be really happy for Naruto. He has always been like a father figure to Naruto, and seeing Naruto find love would warm his heart. As for Sasuke, as I mentioned before, he could have a negative reaction. He might distance himself from them at first, but eventually come around when he realizes that Naruto and Sakura are truly in love and that his friendship with them is important. Choji would be happy and would offer to share his snacks with them to celebrate.
Their friends outside of the immediate ninja team would also have different responses. Some of the villagers who have watched Naruto grow up might be overjoyed. They see Naruto as a hero, and seeing him find love would be like a fairytale come true for them. However, there might be a few who are more cynical and think that it's just a passing phase or that it could cause problems in the village in some way. But in general, the positive reactions would outweigh the negative ones.
He might be a bit flustered at first. Gohan is not the most confident when it comes to romance. He could stutter a bit and then take a moment to compose himself before responding positively. He might say something like 'I've always hoped for this, but I'm just so surprised right now' and then go on to express his love for her.
Naruto might be overjoyed. He's always been someone who values friendship and love, and Hinata's confession could be like a dream come true for him. He could immediately accept her love and start planning a future together.
Well, Naruto's reaction can vary. Sometimes, he might be a bit hesitant at first. Given his past focus on becoming Hokage and his general obliviousness to Hinata's feelings in the original story, he could take a moment to fully process what she's saying. He might then respond with a heartfelt speech about how he values her and wants to explore their relationship further. For example, he could say something like 'Hinata, you've always been there for me, and I want to be there for you too. Let's see where this love takes us.'
Kakashi would be more of a supportive figure. He has seen Naruto and Sakura grow up, and he would likely be happy for them. He might offer some advice to Naruto on how to handle this new relationship, especially considering the challenges they might face as ninjas. For Sakura, he could give her words of encouragement to be true to her feelings.
Sasuke might initially be a bit aloof but secretly be happy for them. He's always had a complex relationship with Naruto and Sakura, and deep down, he would see that they are good for each other.
At first, Naruto would likely be extremely shocked. He has always considered Sakura a friend and teammate, so this would be a huge blow. He might question his own judgment in trusting her.
Sasuke would probably have a complex reaction. He might feel a bit of envy deep down but also be happy for them on the surface. Kakashi would be very supportive and would likely give them some sage advice about marriage, like how to always communicate and trust each other. Shikamaru would be like 'What a drag, but congratulations anyway' in his typical laid - back style.
His friends would likely be shocked. Shikamaru, for example, would probably be disappointed in Sakura. He might try to comfort Naruto and tell him to think rationally. Choji might be angry on Naruto's behalf and want to confront Sakura. And Sasuke, if he's around, might have a complex reaction. He might feel a strange sense of satisfaction that Naruto is finally seeing Sakura's 'true' side, but also a bit of pity for Naruto.
There are fanfics where Sasuke is a bit more reserved in his reaction. He may not show extreme emotions outwardly but instead, internally he's filled with a mixture of excitement and fear. He might start thinking about all the responsibilities that come with having a child and how his life as a ninja will need to change to accommodate this new addition to his family.