One common theme could be Sasuke's growth and development. It might explore how he overcomes his past traumas and becomes a stronger person. This could be related to his relationships with other characters as well.
The exploration of his ninja skills and how he uses them in different situations not covered in the original series. This could include him taking on new and difficult missions and how he strategizes and fights in those scenarios.
Since Naruto is about ninjas, friendship, and achieving one's dreams, and if combined with Galatea, perhaps a common theme could be an unlikely friendship. Maybe Naruto befriends Galatea in a new world or situation, and they learn from each other. Another theme could be adventure, as Naruto is no stranger to going on quests, and he could bring Galatea along on his adventures in the Naruto universe.
If we consider non - inappropriate interpretations, a common theme could be family relationships. In Indian society, family is highly valued, and stories might revolve around family dramas, like conflicts between generations or different family members.
One common theme could be the exploration of love and attraction. For instance, it might show how certain things or situations can enhance the feeling of attraction between characters. Another theme could be the power of beauty and how it can be alluring, like a character's physical appearance or a beautiful setting in the graphic novel.
Often, there could be a theme of self - discovery. Ginny might realize things about herself through this unexpected relationship with Draco. Also, the theme of how friendships are affected. For example, Harry's relationship with both Ginny and Draco would be greatly strained, and the fanfiction could explore how they navigate that. It's a way to dig deeper into the characters' personalities.
One common theme could be redemption. Maybe Hans is given a chance to redeem himself and prove his love for Elsa, and the pregnancy becomes a symbol of a new start for them. Another theme might be family and acceptance, as they deal with the reactions of their friends and family in the fictional world.
If we assume non - inappropriate interpretations of 'lemon' (maybe as something tangy or fresh - themed), a common theme could be Clara's relationship with food or drinks. For example, a fanfic could be about her trying to make a lemon - based recipe during her time on Earth between adventures.
Well, friendship could be a theme. In a non - romantic or inappropriate way, Harry might be using his charm to break through Snape's cold exterior and form a friendship. Also, the theme of self - discovery might be present. As Harry tries to get closer to Snape, he could learn more about himself and his own capacity for forgiveness and empathy.
If we consider non - inappropriate versions, common themes could be Aquaman's relationship with his underwater kingdom. His leadership and how he balances his duties as a king and a hero might be explored. Also, his interactions with other characters like his friends or family members in Atlantis.
Another common theme could be the lizardman's struggle for acceptance in a world dominated by other races. This could involve them trying to prove their worth, intelligence, or ability to co - exist peacefully. Their physical characteristics might also play a role, like their scaly skin or sharp claws, which could be both a source of strength and a reason for others to fear or misunderstand them.
If we assume non - adult versions, a common theme could be the power of Yveltal. Fanfictions might explore how Yveltal's power affects the Pokémon world or the characters around it. For instance, stories could show how trainers or other Pokémon react to Yveltal's presence.