Well, the 'Eyes of the Sun God' in the 'Fairy Tail Hisui' fanfiction could symbolize a source of great energy. Maybe it has the power to control light or heat. It could be that characters are on a quest to either obtain it for its power or to keep it out of the wrong hands. It might also have some connection to the history and lore of the 'Fairy Tail' world in the Hisui part of the story.
Some characters might be protectors of the 'Eyes of the Sun God'. They could have a sworn duty to keep it safe from those who would misuse it.
The unique character of Hisui. She has her own charm and backstory in the Fairy Tail universe. Writers can explore her character in different and often exciting ways in lemon fanfiction, adding a new dimension to the existing story.
Hisui could be put in situations where she has to make tough moral choices. For example, when faced with a decision that could benefit the kingdom but harm an innocent group of people. This would force her to think deeply about her values and develop her character in terms of ethics.
One common theme is adventure. Since Fairy Tail is an adventure - filled series, fanfictions often continue this trend with Princess Hisui. She might go on quests, explore new lands, or face dangerous foes.
A plot could revolve around Hisui having to deal with a threat to the kingdom that only she can stop due to her unique connection to certain magical artifacts. She might have to form an alliance with some of the Fairy Tail members she's not very familiar with, like Natsu and his team, and learn to trust them in the process. This would involve a lot of character development for Hisui as she steps out of her comfort zone.
Maybe the 'eyes of the sun god' are a key to an ancient mystery in the Fairy Tail world. Natsu, with his newfound eyes, embarks on a journey to uncover the truth. Along the way, he faces challenges that test his loyalty to his guild and his own strength. His friends in Fairy Tail might be initially skeptical or worried about this new development in Natsu, but they gradually come to support him as they see the potential of the 'eyes of the sun god' powers.
In Fairy Tail fanfiction, the 'Demon Eyes' can be a really cool and mysterious element. They might be a power that a character has, perhaps giving them abilities like seeing through illusions, detecting hidden magic, or even having some sort of mind - control powers over others. It could also be something that is passed down through generations in a certain family or clan within the fan - created story.
Well, a great storyline might involve Hisui getting lost in a dangerous magical realm and Natsu being the one to go and rescue her. During their time in the realm, they rely on each other's strengths. Hisui uses her knowledge and diplomatic skills, while Natsu uses his brute strength and dragon slayer magic. This shared experience brings them closer. Or perhaps there's a prophecy about Hisui and Natsu that they initially don't believe in, but as events unfold, they start to see the truth in it.
One interesting crossover could be a story where Naruto and characters from Fairy Tail end up in the world of Hisui. Maybe Naruto's jutsu skills combined with Fairy Tail's magic could be used to solve the mysteries or threats in Hisui. For example, Naruto's shadow clone jutsu could be used for reconnaissance while Fairy Tail mages use their elemental magic for combat.
One great example could be those that explore their relationship in an alternate universe. Maybe a world where magic is used in different ways. Another is the ones that focus on how they first meet in the fanfiction world. It could be a chance encounter during a magical event. And there are also fanfictions that deal with them facing a common enemy together and how that experience brings them closer.