One possible plot twist could be that their kiss is part of a magical spell gone wrong. Maybe Ursula was trying to steal Ariel's voice again with a new spell, but instead, the spell backfired and made them kiss. This could lead to a strange alliance between them as they figure out how to reverse the spell.
A plot twist could be that the kiss actually reveals a long - lost connection between them. For example, Ursula could be related to Ariel in some way that was hidden in the past. This discovery through the kiss would completely change their relationship dynamics and how they view each other in the underwater world.
The kiss might be a ruse by Ariel. She could be pretending to be in love with Ursula in order to get closer and find a way to destroy the sea witch once and for all. Ariel, being brave and resourceful, uses the element of surprise of the kiss to gain an upper hand.
One possible plot twist could be that Ariel, while being raised by Ursula, discovers a hidden power within herself that Ursula was trying to keep dormant. Maybe it's a special kind of magic that can break Ursula's control over the sea creatures. This would lead to a power struggle between them as Ursula tries to regain control and Ariel fights for her new - found freedom and the rights of the underwater world.
One possible plot could be that Ursula, after seeing Ariel's determination and new - found courage, has a change of heart. She kisses Ariel as a sign of new - found respect and an unspoken truce between them. Maybe it's a moment of realization for Ursula that Ariel is more than just a mermaid who got in her way.
One possible plot could be that Ursula, after some sort of magical transformation that changes her nature, falls in love with Ariel. They might face opposition from Ariel's father and the underwater kingdom at first. But as they prove their love to be true, they gradually win over the hearts of those around them and have a grand underwater wedding.
A third plot could be a story where Ursula loses her powers and has to rely on Ariel for help. At first, Ursula is reluctant, but as Ariel helps her, she starts to see things from Ariel's perspective. Along the way, they face challenges like other sea creatures who don't trust Ursula, and they have to work together to prove that Ursula has changed.
A different way to develop their relationship could be through a magical accident. Let's say a spell backfires and Ariel and Ursula's minds are swapped. They have to live in each other's shoes for a while. Ariel experiences Ursula's loneliness and the reasons behind her actions, while Ursula gets a taste of Ariel's kind and curious nature. This could lead to a more empathetic relationship between them.
Well, obviously Ariel and Ursula are the main characters. Ariel is the curious and adventurous mermaid princess. She is known for her beautiful voice and her longing for the human world. Ursula, on the other hand, is the sea witch. She is often depicted as a villain, with her tentacles and her devious plans to take over the underwater kingdom or cause trouble for Ariel.
It's popular because their relationship in the original story is so complex. There's a lot of room for exploration. Fans like to imagine different scenarios where their dynamic can change, like friendship instead of enmity.
One idea could be that Ursula has a change of heart after Ariel saves her from a dangerous sea creature. Maybe Ariel gets lost in a part of the ocean Ursula controls, and Ursula decides to help her find her way back instead of taking advantage of the situation.
One great Ursula and Ariel fanfiction could be about Ursula having a change of heart before the final battle. In this story, she might see Ariel's determination and purity of heart and decide to help her instead of trying to defeat her. It could explore their relationship in a whole new light, showing that even villains can have redeeming qualities.
A third plot could be a time - travel scenario. Ariel and Ursula are sent back in time to before Ursula made her evil choices. Ariel tries to prevent Ursula from going down the wrong path, and they end up changing the future of the underwater world for the better.