One major ethical concern is the idea of slavery. Slavery is an immoral and unjust institution in real life, and depicting it in fanfiction, even in a fictional Naruto - based context, can be disturbing. It normalizes a relationship based on coercion and lack of freedom. Also, the harem aspect might objectify characters, reducing them to simply being part of a collection for the pleasure of one character, which goes against the principles of respect and equality for all characters.
I'm not entirely sure if it's a highly popular genre. While the Naruto fanfiction world is vast and diverse, the idea of a'slave harem' concept might not be as mainstream as other themes like adventure or character development. It could appeal to a niche group who are interested in exploring such unique and often controversial relationship dynamics within the Naruto universe.
There are many alternatives. For example, fanfictions that focus on Naruto's journey to become a stronger ninja. Or ones that explore the relationships between the main characters in a more positive and healthy way, like how Naruto and Sasuke's friendship could develop further.
Tsunade could be part of it. Since she is a Senju, she could be a powerful ally and also someone who helps Naruto and Hinata navigate the complex relationships in the harem. Also, Nawaki Senju could be brought back in some way, maybe as a spirit or through some time - travel plot device. He could befriend Naruto and be involved in the growth of the relationships within the harem.
Love and relationships are common themes. Since it's a harem concept, the development of Naruto's relationships with the Senju characters is central. For instance, the growth of romantic feelings and how they deal with jealousy among the harem members.
One idea could be Naruto, who has a connection to the Senju clan, finds himself in a harem situation with Hinata. Maybe they all have to go on a quest to protect the village, and during this journey, their relationships develop. For example, Hinata could use her Byakugan to help them avoid traps while Naruto uses his Senju - related powers to fight off enemies.
Well, if we have to talk about it, some might have the main character Naruto in a situation where he has a group of characters (usually female) around him in a harem - like situation. But again, this is not a very positive or healthy concept in most cases.
One big issue is that it disrespects the characters. Hinata is a strong - willed and kind - hearted character in the Naruto series. Turning her into part of a'slave harem' concept completely goes against her character traits. Moreover, it also goes against the overarching themes of the Naruto series which are about respect, friendship and growth. Fanfiction should enhance the original work, not undermine it with such unethical concepts.
Sure. There are some out there. The idea of Naruto being related to the Senju clan opens up a whole new realm of possibilities in the Naruto fanfiction world. For example, it could change his relationships with other characters. If he was Senju, his connection to Sasuke, who is an Uchiha, would have even more depth considering the historical rivalry and connection between the Senju and Uchiha. And it might also give Naruto access to different jutsus and abilities that are unique to the Senju.