Friendship is a big one. They could develop a deep friendship based on mutual respect and understanding. Also, the theme of protecting the village together. They both have a strong sense of loyalty to the Hidden Leaf Village, so there could be fanfictions where they fight side by side to defend it from powerful threats.
One common theme is the exploration of their brotherly love. It could be about Sasuke finally understanding Itachi's sacrifices for him. Another theme is their power and how they compare to each other in terms of ninja abilities. Also, the theme of redemption might be present, especially in relation to Itachi's actions.
Survival is a very common theme. Given the post - apocalyptic setting of 'The 100', many fanfics explore how the characters continue to find food, water, and shelter. They also deal with the threats from other groups and the harsh environment.
One popular theme is 'What - If' scenarios. For example, what if Naruto had a different teacher instead of Iruka or Kakashi? Another is exploring the backstories of minor characters. Fans often create stories about how characters like Tenten or Kiba got their start as ninjas. And of course, there are many fanfictions about the relationships between characters, not in a romantic way only, but also friendships like Naruto, Shikamaru, and Choji's bond.
The regency era was also a time of change in terms of social and cultural values. So, themes related to the clash between traditional values and new ideas can be seen. For instance, some young people might be influenced by new literary or philosophical ideas from the continent, which could put them at odds with their more conservative families. This added an interesting layer of conflict and drama to the regency stories.
The theme of Naruto's family heritage is quite popular. Writers often delve into the secrets of the Uzumaki clan and how Naruto's connection to it affects his powers and his place in the ninja world. Additionally, fanfictions about the different types of ninja arts and how they can be combined in new and creative ways are also well - liked, all of which are far from inappropriate themes.
One popular theme is the exploration of different Hogwarts houses. Writers often create stories that focus on the unique qualities and interactions of students from Gryffindor, Slytherin, Hufflepuff, and Ravenclaw.
Well, the theme of friendship is very common and appropriate. Fanfictions might show how Naruto's friendship with characters like Shikamaru or Kiba deepens over time. Also, the exploration of different ninja clans and their cultures within the 'Naruto' world is a great theme. It can involve things like how the Hyuga clan's traditions impact Hinata's character development. Additionally, fanfictions about the challenges Naruto faces in bringing peace to the ninja world are also quite popular.
Common themes may include friendship as well. In the context of a harem, the characters who are part of it might start as friends or develop a friendship while competing for the main character's affection. Cultural exploration can also be a theme. Given the rich cultural backgrounds in 'Naruto' and 'Bleach', fanfiction might explore different cultural elements further. But unfortunately, the 'lemon' part often makes these themes secondary. It's also possible that themes of redemption could be present, where a character in the harem has a past they want to make up for.
One possible theme could be the struggle for acceptance. Naruto himself faced a lot of rejection in the beginning because of the Nine - Tails inside him. In 'naruto lust fanfiction' (excluding the inappropriate parts), this theme could be extended to other characters as well. They might struggle to be accepted by their clans or the village. Also, the theme of redemption could be there. A character who has made mistakes in the past tries to make up for it, just like some characters in the original Naruto story.
Well, loyalty within the family is a big theme. The way Draco is expected to be loyal to Lucius and the family name, and how that loyalty is tested in different situations. Also, the theme of redemption can be there. For instance, if Lucius has made some wrong choices, how Draco might be influenced by that and try to redeem the family name in his own way. There are also fanfictions that focus on their magical education and how Lucius' knowledge affects Draco's learning process.