A possible theme is rivalry. The fanfiction might portray Hinata as a rival to Naruto in some aspect, causing his hatred. For example, in a political or power - struggle context within the Naruto universe.
Often, there could be themes related to unrequited love turned sour. If Hinata has feelings for Naruto but he rejects her harshly in these stories, it can lead to a lot of negative emotions and actions that form the basis of the 'naruto hates hinata' plot. It could also involve themes of betrayal, where Hinata does something that Naruto perceives as a betrayal to him or his friends, thus fueling his hatred.
Often, it could be about Naruto's loyalty to his friends. Danzo has been shown to be willing to sacrifice others for the so - called greater good. Naruto, who values his friends highly, would hate that. So, the theme of friendship and loyalty being at odds with Danzo's actions is common. Also, the idea of Naruto seeing through Danzo's power - hungry nature and hating him for it is quite prevalent in such fanfictions.
One common theme is love and romance. Since their relationship is a significant part of the Naruto series, many fanfictions expand on how they fall in love and deal with the challenges that come with it.
Another common theme is the exploration of their powers in relation to each other. For example, how Hinata's Byakugan and Naruto's Nine - Tails power could be combined in some way during battles or training. Also, the theme of family and legacy, especially as they start their own family, is quite popular in these fanfictions.
One common theme is love and relationship development. Since their relationship in the original series is a significant part of the story, fanfictions often expand on it. They show how their feelings for each other grow over time, from Hinata's initial shy admiration to a deep, mutual love.
The theme of loyalty is quite common too. Hinata has always been loyal to Naruto, and Naruto is loyal to his friends and the village. In fanfictions, this loyalty can be tested in different situations. For instance, when the village is in danger, how do they stay true to each other and their values? And there are also themes related to the ninja world, like exploring new jutsus together or uncovering secrets about the history of the Hidden Leaf Village.
One common plotline is Naruto realizing Hinata's worth after some event. For example, Hinata might save Naruto from a dangerous situation, and that makes Naruto see her in a new light and start to develop stronger feelings. At the same time, he could start to distance himself from Sakura because of her continued focus on Sasuke. Another plotline could be Hinata and Naruto getting paired up for a mission, during which they bond more closely while Naruto realizes how different she is from Sakura in terms of her loyalty and selflessness.
Maybe the fanfiction portrays Hinata in a way that doesn't align with her true character. For example, it might make her overly aggressive or weak in a way that doesn't fit the original concept.
Some people create such fanfiction maybe because they like to explore alternative or dark storylines. They might think it's interesting to deviate from the canon relationship between Naruto and Hinata.
In fanfiction, the evidence often lies in the way the author portrays Naruto's interactions. For example, Naruto may be shown being cold or dismissive towards Sakura, like avoiding her company or not showing any romantic interest. Meanwhile, with Hinata, he could be depicted as being more affectionate, like blushing around her or always coming to her aid. But it's important to note that this is all in the realm of fan - created interpretations and not the official canon.
One common plot device is the love triangle. It creates drama as Sakura may be jealous of Hinata's relationship with Naruto. Another is the redemption arc for Naruto's feelings. Maybe he used to be confused about his feelings for Sakura but then realizes his true love is Hinata. And there could be a friendship break - up plot device where Naruto distances himself from Sakura due to his newfound love for Hinata.