One idea could be a story about Moana's journey during her pregnancy. It could focus on how she still tries to maintain her connection with the ocean and her village. Maybe she teaches the children about the importance of nature even while she's expecting.
In a fanfiction scenario, the pregnancy might bring new challenges for Moana. She's used to being active and leading her people, but now she has to take it easy. Maui, on the other hand, tries to step up and learn about what a woman needs during pregnancy. He might even ask the ocean for help, as it has always been a guiding force for them. They could face some opposition from the more traditional members of the tribe who have doubts about a demigod being involved in the future of their chief, but in the end, they overcome it all with love and determination.
Well, one funny story could be that pregnant Moana still tries to go on her little adventures around the island. She waddles to the beach, and the ocean waves seem to be extra gentle with her as if they know she's in a special state. The little sea creatures come closer to her than ever before, and she has to shoo them away gently while laughing at their curiosity.
A possible plot could be that Moana discovers she's pregnant during a normal day on the island. She's filled with a mix of emotions - joy, fear, and excitement. She then decides to go on a small journey within the island to find a special place where she can talk to the spirits about the new life growing inside her.
One storyline could be that Moana discovers she's pregnant during a time of peace in Motunui. She then has to balance her new role as a mother - to - be with her duties as a leader. She could start teaching the children of the village about the ocean and their heritage in a new way, inspired by her own upcoming motherhood.
The story could be about their journey to prepare for the baby. Maui might use his strength to build a special place for the baby to live. For example, he could create a beautiful hut using his fishhook and the resources from the island.
Pregnant Moana might try to fit into her old canoe. She squeezes in but realizes she can't move as freely as before. Then, as she attempts to paddle a little in the shallow water near the shore, the canoe starts spinning in circles because of her unbalanced movements. She bursts out laughing, and the villagers on the shore are in stitches watching her.
She could develop more patience. As she goes through the physical and emotional changes of pregnancy, she would have to learn to be patient with herself and those around her. This could also lead to her being more empathetic towards others in the village who are going through difficult times.
One popular trope is the 'What If' scenario. For example, what if Maui didn't leave Moana at some point in their journey? Another is the 'Hidden Relationship' trope, like Moana having a secret connection to another character from her island's past. And the 'Character Development Expansion' is also common, where a writer delves deeper into Maui's backstory, perhaps exploring his early days as a demigod and how he became the Maui we know in the movie. Fanfictions often play with these ideas to create new and interesting stories within the Moana universe.
Moana is indeed an original story. The filmmakers came up with the concept and characters from scratch to bring a unique and engaging narrative to the screen. There are no direct ties to any previously existing tales.