One scenario could be that Naruto is initially shocked but then quickly realizes his own feelings for Hinata. Another might be that Hinata's confession causes a stir in the village as it's a very public event. Or perhaps Naruto is in the middle of a difficult mission and Hinata's confession gives him new motivation to succeed.
Well, in the Naruto universe, Naruto's confession to Hinata would bring a lot of positive changes. Since Naruto has always been the center of attention, his relationship with Hinata would be a big deal. It would probably strengthen the bond between the Uzumaki and Hyuga clans. Also, Hinata has always been a quiet and supportive character, and with Naruto by her side, she could become more confident and play an even bigger role in the village's affairs.
It's popular because the relationship between Hinata and Naruto has been a long - developed one in the original series. Fans have been rooting for them for a long time. So, fanfictions about Hinata confessing give fans the satisfaction they didn't get fully in the original work.
One of the most emotional scenes could be when Naruto finally realizes his true feelings for Hinata. Maybe it's after a dangerous battle and he sees Hinata there, always supporting him, and it just clicks. Another could be when he actually confesses. The look on Hinata's face, probably a mix of shock and overwhelming joy, would be really moving. And the moment when they embrace for the first time after the confession would also be super emotional.
There's a fanfic called 'A Confession Long Awaited'. In this one, Hinata's confession is a turning point in their relationship. It's set after a big battle where they both realize how much they mean to each other. The story does a great job of showing Hinata's strength in being able to be so vulnerable. And then there's 'Confessing My Love, Hinata - Style' which is a more light - hearted take on her confession, with some cute and funny moments between the two characters.
If Naruto doesn't return her feelings, it could potentially damage their friendship. Sakura's confession might make Naruto feel pressured, and he may start avoiding her. However, if they communicate openly about it, they could potentially salvage their friendship and even grow closer in a different way. For example, they might become more honest with each other about their emotions in general.
In some fanfictions, a great plot twist is that Naruto has amnesia when Sakura confesses. He doesn't remember who she is or their past interactions. This makes Sakura's confession even more poignant as she has to try to make him remember and also deal with his possible rejection. Also, there could be a time - travel plot twist where Sakura from the future comes back to confess her love, which throws Naruto into a state of confusion as he doesn't understand how this could be possible.
Another interesting fanfic could be set in an alternate universe where Hinata is a famous ninja and Naruto is a regular villager. Hinata's confession in this scenario would be different as she has to overcome her status and the social differences to tell Naruto how she feels.