Often, Hinata might be included. Since Hinata has a long - standing relationship with Naruto in the original series, in a harem fanfiction, she could be part of the group. Also, Sakura could be there. She has her own complex relationship with Naruto in the original Naruto story, so it makes sense for her to be in a harem setting with him in fanfiction. Another character could be Ino. She is also a female ninja who has interacted with Naruto and could potentially be part of this harem scenario.
In the fanfiction, a big challenge could be the jealousy or interference from other characters. There might be other people who have feelings for Naruto or Hanabi. For Naruto, Sakura might still have some unresolved feelings, and she could potentially cause some problems for their relationship. For Hanabi, there could be members of the Hyuga clan who oppose her being with Naruto, thinking that he is not a suitable match for her in terms of clan traditions and politics. All these factors combined would create many challenges for Naruto and Hanabi to overcome.
The Hyuga clan members would be very confused by 'Hanabi' (really Naruto). They would notice her (his) un - Hyuga - like behavior and attitude. For example, Naruto's loud and friendly nature would be a stark contrast to Hanabi's more reserved Hyuga self. As for Naruto's friends, they would be puzzled by 'Naruto' (actually Hanabi). They would wonder why he (she) seems a bit different in combat and decision - making.
In this fanfiction, Naruto's personality could shift in a few ways. He'd likely become more attuned to the needs of the Hyuga clan, trying to fit in and understand their ways. His impulsiveness might be tempered a bit as he has to consider Hanabi's feelings and the traditions of her family. Hanabi would change too. She'd become more flexible, learning from Naruto's ability to adapt to different situations. Her quiet nature could gain a bit of Naruto's boldness, and she might be more willing to speak up for what she believes in, especially when it comes to their relationship.
If there is such a fanfiction, it could be that the author is exploring a very dark or alternative take on the Naruto world. Maybe they are using the'slave' concept as a metaphor for power dynamics between the characters. But it's also likely that it could be a story full of misinterpretations and inappropriate content. Since Hanabi is a strong and respected character in the Naruto series, seeing her in such a demeaning role would be quite a departure from the original characterizations. It might also include elements of Naruto trying to rescue or change Hanabi's situation, but again, this is all speculation without actually reading the story.
I don't think it's a very common type of fanfiction. Usually, the Naruto - Hinata relationship is quite popular and widely accepted in the Naruto fandom. So stories where Hanabi tries to steal Naruto from Hinata are not as frequently seen.
In a 'hanabi steals naruto from hinata fanfiction', Hanabi might start by spending more time with Naruto. She could befriend him and gradually make him see her in a different light. However, this would be a huge shock to Hinata, who has deep feelings for Naruto. The story could then explore the consequences of such an action, like how the Uzumaki - Hyuga relations might be affected. Also, Naruto himself would be in a difficult position as he has his own relationship with Hinata, but Hanabi's actions might make him question his feelings.
A Naruto Hanabi fanfic could be about various things. It might explore their relationship in different scenarios. For example, it could be set in an alternate universe where they are on a joint mission and have to rely on each other to overcome challenges. It could also focus on their friendship, how they support each other in the shinobi world, and the growth they experience together.
I'm not sure if there is a specific 'Naruto spank Hanabi' fanfic. Fanfics cover a wide range of themes and scenarios, but this particular combination might be quite rare or might not exist at all. It also depends on the various fanfic platforms and the creativity of the writers within the Naruto fan community.