She might be initially shocked. Sakura has always seen Naruto as a friend, so learning of his romantic feelings could completely change her perspective of him. It could make her re - evaluate all their past interactions.
In many fanfictions, it might start with Sakura noticing small things about Naruto that she hadn't paid much attention to before. For example, his unwavering determination in the face of difficulties. This newfound awareness gradually grows into admiration and then love as she spends more time with him, either on missions or during downtime in the village.
Maybe there's a prophecy that says their love is doomed. This would add a sense of urgency and drama to the story. They would have to fight against fate to be together.
Another development could be that Sakura starts to develop feelings for Naruto as she spends more time thinking about his love for her. She might notice things about him that she never paid attention to before, like his kindness and determination in a more romantic way.
In the context of fanfiction, Sakura admitting her love for Naruto can be a really interesting twist. It might attract a lot of readers who were always hoping for a different romantic outcome in the Naruto story. Fanfiction allows for such creative liberties, and this particular scenario could lead to various story arcs, like how Naruto reacts to it, or how it affects their friendship with Sasuke.
Well, it could be a story where Videl starts to notice her feelings for Gohan during a training session. Maybe she realizes how much she admires his strength and determination, and those feelings gradually turn into love.
She might be initially surprised. Fanfiction often presents alternate scenarios of relationships. Sakura has always had a complex relationship with Naruto, more of a deep friendship in the original story. If she found out about this in fanfiction, she could be flattered that someone thought of them in that way, but also might feel a bit awkward since their real - life relationship dynamic is different.
Well, in this kind of fanfic situation, Sakura could also become more protective of Naruto. Since a jinchuuriki is in a rather dangerous position, she might start to see him as someone who needs her support more than ever. She could try to keep his secret safe from those who might want to harm him because of it.
She might be overjoyed. After all, Naruto is her son. She could immediately rush to find him and embrace him tightly, tears of happiness streaming down her face.
Some of his other friends might react differently too. Some may be more cautious around him, worried about the power of the jinchuuriki within him. But those who truly trust Naruto, like Shikamaru, might not change their attitude much. They would see that Naruto is still the same person he was before, just with this added aspect to his identity.