One common theme is the complex relationships among the characters in the harem. There's often jealousy and competition for the hero's attention. Another theme can be the growth of the hero as they navigate through these relationships. They might learn about different personalities and how to handle diverse emotions.
Typically, the main character would be an original character created for the fanfiction. He is usually the one around whom the harem forms. And of course, there would be characters from the Naruto series like Naruto himself, Sasuke, Sakura, etc. who might interact with the main character and the harem in various ways.
Well, in addition to the ones mentioned above, Ino could be part of Naruto's harem. She's confident and has her own charm. Then there's also Temari. She's a strong - willed and powerful kunoichi from the Sand Village. Her relationship with Naruto could develop in an interesting way in a harem fanfiction. And don't forget about Karin, who has had some interactions with Naruto and could potentially be in the harem.
One characteristic is the focus on multiple romantic relationships for the main hero, Naruto. Usually, there are several female characters vying for his attention or being part of his life in a romantic way.
In such a fanfiction, from Naruto, Sakura could be in the harem. She's strong - willed and has her own set of skills. From My Hero Academia, Ochaco Uraraka could be there. She's kind - hearted and has an interesting quirk. And of course, Hinata from Naruto is also a likely candidate with her shy yet determined personality.
First, create your hero. Decide on their personality, powers if any, and their backstory. Then, start thinking about the different characters for the harem. Each should have a distinct personality. For example, one could be a feisty warrior, another a wise mage.
Well, one interesting plot could be how the main character manages to balance his relationships with different members of the harem while also dealing with the challenges in the Naruto world. For example, he might have to protect his harem from enemy ninja attacks.
One interesting plotline could be Naruto having to balance his ninja duties with the attention of his harem. For example, he might be in the middle of a mission but then be called away by one of the girls in his harem who needs his help. Another could be the relationships between the different members of the harem themselves, like how they deal with jealousy or form friendships.
There's also 'Izuku's Harem Adventure'. In this fanfiction, the author creates unique scenarios where Izuku finds himself in the middle of a harem. It has great character development for not only Izuku but also the members of his harem, exploring their individual personalities and how they interact with Izuku.
Ochaco Uraraka is a common character in the harem. Her kind and friendly nature makes her a likely candidate. Momo Yaoyorozu is also often included. Her intelligence and elegance add an interesting dynamic to the harem. And Tsuyu Asui could be part of it too, with her unique personality.