Well, you could write a fanfic that focuses on the relationship between the different characters. Maybe a story about how the friendship between Mendel and Marvin develops over time. Or a fanfic that shows a day in the life of the characters from the perspective of one of the minor characters. Also, a fanfic about the characters going on a trip together could be interesting.
One idea could be exploring the characters' backstories more in - depth. For example, delving into Marvin's childhood and how it shaped his adult behavior. Another idea might be a what - if scenario, like what if Whizzer never got sick? A third idea could be a modern - day reimagining of the story with the characters in different professions but still with the same complex relationships.
Some good falsettos fanfic ideas could involve time - travel. Imagine a character going back in time to change a crucial event in the story. You could also write a fanfic where the characters are in a different setting, like a high - school AU (alternate universe). This would give a fresh take on their relationships and personalities. Additionally, a fanfic centered around the musical aspect of falsettos, like the characters creating a new musical together, would be great.
First, re - watch or re - listen to Falsettos to get a fresh feel for the characters and the story. Then, pick a character or a relationship that interests you the most. For example, if you're into the complex relationship between Marvin and Whizzer, start with a scene that showcases their dynamic. Just start writing down your ideas, don't worry too much about grammar at first.
One idea could be a story where Luz and Amity go on an adventure in the Demon Realm to find a rare magical artifact. This would test their relationship and their individual magical abilities.
One idea could be a fanfic where Billie is on a magical adventure in a parallel universe filled with talking animals. Another could be a story set in the future where Billie uses her music to save the world from an environmental disaster. Or perhaps a fanfic about Billie's early days as a musician, the struggles she faced and how she overcame them.
One idea could be exploring Blinx's origin story in more detail. Maybe he comes from a long line of time - controlling heroes and his powers are a family legacy.
Another good idea is a slice - of - life menma fanfic. It could focus on a day in her life, like going to school, hanging out with friends, and dealing with typical teenage problems such as crushes and schoolwork.
One idea could be a story where Piper and Percy have to team up on a quest that involves both Aphrodite and Poseidon's powers. Maybe they need to find a lost artifact that was created by the combined efforts of the two gods in the past.
One idea could be a fanfic where Serena embarks on a special journey to find a rare Pokemon that has a deep connection to her family's past. Another could be a story about Serena competing in a unique Pokemon tournament that has different rules than the usual ones. Maybe also a fanfic where Serena teams up with an unlikely group of Pokemon trainers to save a region from a mysterious threat.
A Vandread and Macross crossover could also be cool. The mecha elements in both could blend well. The pilots from Vandread could learn new combat techniques from the Macross pilots, and there could be some cultural exchange regarding how they view their mecha and the role it plays in their respective societies.
An OC could be a time - traveling fan of Kakashi. They come from a future where Kakashi is a legend. The OC tries to change certain events in Kakashi's past to make his life easier, but in doing so, they create unforeseen consequences. This could lead to an interesting dynamic where Kakashi has to figure out what this strange person is doing and why.
One idea could be a fanfic that focuses on a side character's backstory in the Inheritance Games. Maybe explore how they got involved with the Hawthorne family in the first place. Another idea is a 'what if' scenario, like what if Avery had a different reaction to the initial inheritance games invitation. It could also be interesting to write a fanfic that delves into the relationships between the Hawthorne brothers from a different perspective, showing their hidden rivalries or alliances.