He could be characterized as strong and protective. Since he is a diclonius, he would have certain powers that he can use to safeguard the females in his harem.
One idea could be a male diclonius who finds himself in a world where he has to protect a group of female characters from various threats. Another could be a story where he is on a journey to discover his true powers and along the way, he gathers a harem of different female diclonius with unique abilities.
To create a compelling male Diclonius character, give him complex emotions. He could be conflicted about his powers, feeling both pride in his strength and guilt for the harm they can cause. Also, give him a backstory. Maybe he was an outcast among humans before he knew he was a Diclonius. Physical traits can also be important. Describe his horns or his unique Diclonius features in an interesting way.
The plot could be about Naruto suddenly discovering he has Diclonius powers. He might have to hide it at first because people in the Hidden Leaf Village would be afraid of his new abilities. Then, he could start training to control his Diclonius powers, like his vectors, while still dealing with the regular threats in the Naruto world, like Akatsuki.
A plot could involve a male Diclonius who discovers he has a unique power among his kind. He is then hunted by other Diclonius who see him as a threat or a valuable asset. As he tries to evade them, he stumbles upon a hidden community of Diclonius who have different ideals and he has to decide whether to join them or continue on his own path. He could also be on a quest to find out the origin of his kind and the true purpose of their powers.
Yes, there might be such fanfiction. However, I haven't read it specifically. Diclonius is from a different anime concept, and when combined with Naruto in fanfiction, it could potentially create some really interesting crossovers. It might involve Naruto characters having some of the characteristics or facing situations related to Diclonius, like the horns and special powers.
Well, Rock Lee would be a great addition to Naruto's male harem in fanfiction. Lee's admiration for Naruto's spirit is well - known. His energetic and positive attitude could blend well with Naruto's. Neji could also be a potential member. Despite their past differences, Neji could see Naruto in a new light and develop feelings for him. And then there's Kiba. His competitive nature with Naruto could shift into a more romantic - like rivalry in a male harem fanfiction.
Communication is key. Have the male OC have deep conversations with each member of the harem. For example, he could talk about his dreams and fears, and the girls could do the same. This would create an emotional bond. Also, shared experiences like going on quests or fighting together can strengthen the relationships. For instance, if they face a powerful enemy together, they'll rely on each other and grow closer.
There are also male harem fanfictions in the world of video games. For example, in some 'Final Fantasy' fanfictions. The male lead might be in a situation where he has a group of female (and sometimes male) companions who have different motives and feelings towards him. These stories can explore themes of friendship, love, and adventure all at once.
One common theme is the struggle of Naruko to balance her relationships with all the male characters. For example, she might have to deal with jealousy among them.