One idea could be to explore what would happen if the Little Mermaid had a different power, like the ability to control storms. Another could be a story where she meets a merman from a different part of the ocean who has a completely different culture. Maybe a fanfiction where she has to save the entire ocean from a new kind of threat that no one has ever seen before.
The little merman himself is of course a very popular character. He is often the center of the story, with his adventures and relationships being the focus. Ariel, from the Disney version, is also a commonly used character. Her beauty and her longing for the human world make her an interesting addition to fanfiction.
First, think about the main character. Decide if you want to keep the Little Mermaid as she is in the original or give her some new traits. Then, come up with a unique plot. It could be something as simple as her having a different adventure in the ocean. Start with a strong opening, like describing a beautiful underwater scene where she is swimming.
One idea could be that the little merman discovers a hidden underwater kingdom full of magic and mystery. He could be on a quest to find a powerful artifact that can save his own kingdom from a dark force. Another plot could be a love story where he falls in love with a human who can also breathe underwater due to a special spell.
The main plot of the little merman story is about a mermaid who falls in love with a human prince. She makes a deal with a sea witch to get legs in order to be with the prince.
One possible story could be that Eric, as a merman, is an outcast in his own underwater kingdom. Maybe he has different ideas about interacting with the surface world compared to the other mermen. He could befriend Ariel, who is curious about his unique perspective among the mermen.
A plot could be that Eric, as a merman, is part of a group of mermen who are at war with a different underwater species. Ariel gets caught in the middle of this conflict. Eric has to choose between his loyalty to his kind and his growing feelings for Ariel. This would create a lot of drama and tension in the fanfiction.
The main characters could include the little merman's family members. His father, the king of the merman kingdom, might play an important role in shaping his future. And his mother, who could be a gentle and nurturing figure. There could also be a young mermaid who is his love interest, and together they face various challenges in the story.
One key theme could be self - discovery. The young merman might be on a journey to figure out his place in the underwater world. Another theme could be friendship, as he may interact with other sea creatures and form bonds. Also, there might be a theme of adventure, perhaps exploring new parts of the ocean that are unknown to him.