Well, a common theme is probably the development of relationships. In a harem - based fanfiction, Naruto has to deal with multiple relationships at once. There could also be a theme related to protecting the village or the world. Since Naruto is a ninja, his duties and responsibilities still play a role. Additionally, the idea of loyalty might be a theme, as the characters in the harem need to be loyal to Naruto and to each other in some cases.
In 'Naruto Avatar Harem' fanfictions (excluding inappropriate content), a recurring theme is often the exploration of different cultures. If we consider the 'avatar' part, it might bring in elements from different fictional cultures. Another theme could be the struggle for acceptance. Naruto, being in a harem situation, might face challenges in getting all the characters to accept each other. Also, the theme of growth, both in terms of Naruto's personal growth as a ninja and in his ability to handle relationships, is quite common.
One common theme could be the power dynamics within the harem. For example, Naruto's own power as a ninja might influence how the other characters in the harem interact with him. Another theme could be friendship. Even in a harem situation, the characters often start as friends or comrades. And also, there might be a theme of self - discovery for Naruto as he navigates through these complex relationships.
One common theme could be the exploration of different power systems. Since Naruto has chakra - based powers and Avatar has bending, a non - inappropriate theme could be how the characters learn from each other's power - using methods. For example, Naruto characters might be intrigued by the way Avatar characters control the elements through their bending.
One common theme is the growth of Naruto's character within the context of these relationships. Another could be the exploration of different powers and abilities that the 'goddess' characters bring into the story. There might also be themes of friendship and loyalty among the members of the harem, and how they all interact with Naruto.
Often, the theme of redemption can be present. Maybe Naruto travels back in time and tries to prevent some characters from making bad choices. Also, the exploration of different timelines is a common theme. He could see how different decisions in the past would have affected the future of the Naruto world. This can lead to a lot of interesting plot twists and turns.
Typically, a common theme would be the power dynamics. Naruto is a very powerful character in the Naruto universe. In a naruhina harem scenario, the other characters in the harem might be drawn to him because of his power, or Hinata might have to navigate her relationship with Naruto in the context of his power. Also, there could be themes of family and acceptance. Since a harem implies a group, the idea of creating a new kind of family or community within that group could be explored.
One common theme could be the exploration of different personalities. Kenichi, being in a harem - like situation, gets to interact with characters having diverse personalities. This can lead to themes like acceptance, where he learns to accept the differences among them. Additionally, there could be a theme of protection. Kenichi may feel the need to protect the members of the harem, and they might also try to protect him in different situations.
One common theme could be the development of relationships. In a harem - like setting, the main character (presumably Naruto in this case) has to navigate through different types of relationships with multiple characters. There could be themes of loyalty, trust, and friendship within these relationships.
One common theme could be relationship building. Harry would be in the process of forming different kinds of relationships with the members of his harem. Another theme might be loyalty and jealousy among the harem members. They might compete for Harry's attention in a non - sexual way.
One common theme could be the exploration of different relationships. For example, Goku forming strong bonds with multiple characters. Another might be the growth of Goku not just as a fighter but also in his emotional and social interactions within the harem. Also, there could be themes of friendship and loyalty among the members of the harem.
Often, a theme could be friendship. Despite coming from different worlds, Naruto and Toph could form a strong bond. They might start off as strangers but gradually learn to trust and rely on each other. Also, there could be a theme of self - discovery. Toph, being in a new world (the Naruto world), might discover new aspects of herself, and Naruto could learn from her confidence and self - assuredness.
Well, if we exclude inappropriate content, a common theme could be the exploration of Naruto's mental state. Hypnotism in this context might be used to show his inner thoughts and fears. For example, it could be about how Naruto overcomes some hidden traumas through this hypnotic experience.