One interesting concept could be the crossover of the two universes' magic systems. For example, how Star's wand magic might interact with the gem powers in Steven Universe. Another could be the character interactions, like Star and Steven teaming up to face a common threat.
Some fanfics focus on the origin stories of the villains in Star vs the Forces of Evil. They might explore what made Toffee so evil or how Ludo became the way he is. By delving into these backstories, the fanfic can add more depth to the existing story. And there are also fanfics that center around the magic items in the show, like the wand, and how they could be used in different and unexpected ways.
You can start by looking on fanfiction.net. It has a large collection of fanfics for various shows, and there are likely to be some good ones for this crossover. Another option is Archive of Our Own (AO3). It's known for its wide range of fan-created content and has a great tagging system to help you find exactly what you're looking for.
One interesting concept could be characters from different universes within the fanfiction meeting and interacting. For example, Star from 'Star vs the Forces of Evil' might meet characters from other popular shows. This can lead to unique storylines and character developments. Another concept could be the combination of different magical elements from the show and the crossovers. It can create new powers and challenges for the characters.
In genderbend fanfiction, the character designs can be really fascinating. The male version of Star might have different magical powers or a different style of using magic. He could have a more brash or bold approach compared to the original Star, which would lead to different plot developments when facing the Forces of Evil.
One idea could be exploring an alternate universe where Star and Marco's roles are reversed. Another could be a fanfic that focuses on the backstory of a minor character like Pony Head. Or perhaps a story where the forces of evil have a more sympathetic origin.
There could be a fanfiction that puts Evil Star in a situation where she has to face her own good side. Maybe she gets hit by a spell that makes her see the consequences of her evil actions. This could lead to an internal struggle within her, and the story could explore whether she would change or double down on her evil ways. It would be really interesting to see how the writer develops her character in such a scenario.
Well, in 'Steven Universe Harem Fanfic', the concept of friendship expansion can be quite interesting. Since Steven is a very friendly and empathetic character, the harem aspect could be used to show how he draws in various characters who might be initially quite different from him. It can also be about the power of his gem - related abilities being used in new and creative ways within these relationships. For example, his healing powers could have a deeper impact on the emotional states of the characters in the harem.
One interesting crossover could be the characters from 'Star vs the Forces of Evil' ending up in the Naruto universe. Star could use her magic in new and unexpected ways in the world of ninjas. Maybe she'd team up with Naruto and use her wand to help in battles against the Akatsuki. Another idea is for Naruto characters to visit Mewni. Sasuke might be intrigued by the magic there and try to learn some new techniques.
The 'star vs the forces of evil lemon fanfic' often has interesting takes on the themes of the original show. For instance, the theme of friendship and loyalty might be explored in a more complex way. The fanfics could show how characters' loyalty is tested in different situations that the show didn't cover. Additionally, the fanfic might play with the power dynamics between characters. Maybe a weaker character in the show becomes more powerful in the fanfic and how that changes their relationships with others. The creativity in exploring these elements makes these fanfics worth checking out.
Well, one interesting aspect could be the exploration of different character relationships in unique and unexpected ways. However, it's important to note that fanfics can vary greatly in quality and content.