A typical plot in such fanfiction is that Hinata gets injured while protecting Naruto, and this makes Naruto confront his feelings. He starts to notice how much she means to him and realizes he secretly likes her. Another plot could be that Naruto has a dream or vision about Hinata being with someone else, and this makes him jealous and finally understand his feelings for her. There are also plots where the village elders try to arrange a marriage between them, and Naruto discovers his own feelings during the process.
Often, a common plot is set in an alternate universe where Naruto isn't as dense about his feelings. He quickly realizes he likes Hinata and they start a secret relationship. There are also plots where Naruto is jealous when he sees Hinata with another guy, which makes him realize his own feelings. And sometimes, there are time - travel plots where Naruto from the future comes back and realizes he should have paid more attention to Hinata in the past, thus secretly liking her all along.
In the Naruto series, there are some hints that could be seen as Naruto having special feelings for Hinata. For example, Hinata has always been very shy around Naruto but also extremely supportive. Naruto, in turn, gradually realizes Hinata's importance in his life. However, in fanfiction, writers can explore this relationship more deeply, often creating scenarios where Naruto's secret liking for Hinata is more overt. Some fanfictions might base it on Naruto noticing Hinata's consistent presence in his life, her unwavering faith in him, and how she has risked her life for him on multiple occasions.
One possible plot could be them trying to keep their relationship a secret from their friends. For example, they might have to come up with excuses for why they're always disappearing together. Another plot could involve Hinata's family finding out. Her father might initially be against it, but then come to see how much Naruto has changed and grown, and finally give his blessing.
A common plot could be Sakura trying to hide her feelings from Naruto while he remains oblivious. This creates a lot of internal conflict for Sakura and comical or tense situations in the story.
One common plot is the discovery of their relationship. Maybe someone starts to suspect that Naruto is hiding something, and they gradually piece together that he's married to Kagura. Another plot could be them facing opposition from their respective communities. For example, Konoha might not approve of Naruto's marriage to Kagura for some reason.
One common plot is the 'love triangle' situation where there might be another character interested in either Naruto or Hinata, creating some jealousy and drama. For example, in some fanfictions, there could be a rival for Hinata's affection who tries to come between her and Naruto.
One common plot is that Hinata travels. She goes to different places, meets new people, and through these experiences, she slowly forgets about Naruto. For example, she might go on a journey to study a new form of ninja art in a far - off land and there, she discovers new passions.
One common theme is unrequited love. Often, Sasuke is shown as having these secret feelings while Naruto is oblivious. Another theme could be the struggle between Sasuke's pride and his feelings for Naruto. He might try to hide his emotions because of his Uchiha pride or his past traumas.
One common plot development is that Naruto starts to spend more time with Hinata. He wants to get to know her better now that he knows her feelings. For example, they might start training together more often.
A frequent plot in such fanfictions is Naruto's over - protective nature towards Hinata. He might be overly cautious when Hinata is involved in a dangerous situation, even if she is fully capable of handling it herself. This can lead to some comical situations as well as moments of deep emotional connection. Also, there could be plots where Naruto has to protect Hinata from a threat within the ninja academy, like a jealous rival.
A unique plot could be a time - travel one where Hinata travels back in time and tries to change certain events to make Naruto's life easier earlier on. She might use her knowledge of the future to help him avoid some of the hardships he faced in the original story.