Yes, there are many interesting Uta One Piece fanfictions. Some focus on exploring Uta's backstory in more depth, like her relationship with Shanks before she became a famous singer. Others might create alternate universes where Uta's powers are used in different ways to change the course of the One Piece story.
The 'one piece film red novel' likely delves deeper into the themes presented in the movie. It could be about the power of music as shown through Uta's character. It may also explore the new locations and the significance of the events that take place there. Maybe it gives more details on the battles and how the characters use their skills to overcome difficulties.
One common theme is the exploration of Uta's true nature. Since she has a complex character in the movie, fanfictions often try to dig deeper into what makes her tick. Another theme is the power of her music, like how it can be a weapon or a tool for peace in different scenarios.
The main characters in the 'one piece film red novel' include Luffy, Uta, and the rest of the Straw Hat pirates. Luffy is always at the forefront, leading the crew. Uta is a key figure as her actions and her past drive much of the story. And the other crew members, like Chopper the cute reindeer doctor, Robin with her knowledge of history, and others, all have their parts to play in this story set in the world of One Piece Film Red.
It's mainly about the story in the 'One Piece Film Red'. It might expand on the characters' emotions, backstories, and the overall plot of the movie in a written form.
One idea could be Uta using her music powers in new and unexpected ways. For example, she might create a song that can temporarily freeze time in a small area within the One Piece world, allowing her to escape from a tough situation or pull off a clever heist. Another idea is a fanfiction where Uta teams up with the Straw Hat crew for a special mission. She could use her music to communicate with sea creatures and gain their help in navigating dangerous waters.