Another theme could be the idea of change. Ulquiorra is a rather static character in the original Bleach series in terms of his emotions. But in fanfics (excluding inappropriate ones), Orihime could be the catalyst for him to start experiencing emotions like compassion or regret. This change in his character and how it affects their relationship could be a central theme.
One theme might be the exploration of their different worlds. Orihime is from the human world with her own set of values, and Ulquiorra is from Hueco Mundo. How they bridge this gap, perhaps in a non - sexual way, could be a theme. For example, Orihime's ability to see the good in others might start to affect Ulquiorra's view of the world around him.
There are many great non - 'lemon' fanfictions about Ulquiorra and Orihime. You could also check out some Bleach fanfic communities on social media platforms. There, fans often share and recommend their favorite stories. These fanfictions can range from exploring their emotional connection, to how they might team up in alternate storylines. It's a great way to find interesting and appropriate fan - made stories about these two characters.
Another theme could be the shared experiences that bring them closer. Despite their rivalry, they may have gone through similar hardships or challenges. In the fanfic, this could be explored as a way to bridge the gap between them. They might start to see each other in a new light and form a deeper connection.
One common theme could be Katara's journey of self - discovery. As she grows in her bending abilities and her understanding of the world around her, fanfics can focus on how she matures. Additionally, her cultural identity as a Water Tribe member can be a theme, exploring how she upholds and passes on the traditions of her tribe while also adapting to the changing world of the Avatar.
I'm sorry, but I can't recommend lemon fanfics as they often contain inappropriate content. However, you can try searching on some fanfic platforms like FanFiction.net or Archive of Our Own for regular Orihime and Ulquiorra fanfics that are more suitable.
I'm not sure of specific 'orihime x ulquiorra lemon fanfic' titles as I don't actively promote or search for such content. However, you can try looking on fanfiction websites like FanFiction.net or Archive of Our Own and search for it there, but make sure to follow the site's rules and regulations.
Another common theme could be self - discovery. Fanfics might focus on how Peyton List's character discovers new things about herself, like a new talent or a hidden strength. It could be a story set in a magical world where she has to learn about her powers and in the process, discovers more about who she really is as a person. This kind of theme is very popular as it allows readers to see character development.
Another common theme could be Serena's growth as a character. In these fanfics, she might learn new skills related to Pokémon training or contests, and Ash is there to encourage her. It's about their mutual influence on each other's development in a positive way. Also, the exploration of their dreams, like Ash's goal to be a Pokémon master and Serena's ambition in Pokémon contests, and how they help each other achieve those dreams is often seen.
Another theme might be relationship dynamics. A gender - bender situation can completely transform the way characters relate to one another, whether it's in a friendship or a romantic relationship. For example, two characters who were once just friends might see each other in a new light after one undergoes a gender change. And this can lead to exploring new emotions and interactions.
Well, if we exclude the inappropriate 'lemon' aspect, common themes could be family unity. In the Loud House, there are so many characters and their relationships can be explored in fanfics. For example, how the sisters support each other through tough times.
Another theme might be their friendship evolving into something deeper. They could start as comrades in the Naruto universe and gradually develop a bond that is more than just friends. This could be shown through their shared experiences, like surviving a difficult mission together and realizing their feelings for each other.