Perhaps the story could focus on Arceus's journey while being pregnant. It might face challenges that it has never faced before, like dealing with new limitations on its power due to the pregnancy. It could also be about how it prepares for the arrival of its offspring and how the other Pokémon in the world react to this upcoming change.
A different plot could be centered around the reactions of the trainers and humans in the Pokémon world. They might see it as a sign of something big coming. Some could be trying to protect Arceus during its pregnancy, while others might be trying to take advantage of the situation for their own gains. The fanfiction could explore the moral and ethical dilemmas that arise from this.
One plot idea could be the mystery around how Arceus became pregnant. Since it's a very powerful and almost god - like Pokémon, it could involve some sort of divine intervention or a very special event in the Pokémon world. Maybe other Pokémon are in awe or even a bit afraid of what this could mean for the balance of the world.
Perhaps Arceus and Misty have a unique bond that was formed over time. Arceus, seeing the good in Misty, decides to bestow upon her a gift of a new life. The plot could involve Misty having to keep this a secret from most people as they wouldn't understand. As her pregnancy progresses, she starts to develop special powers or a deeper connection to the Pokémon world, all while dealing with the normal pregnancy symptoms and the mystery of what this child will bring to the world.
A potential plot could be centered around Ash's role in a prophecy. Since he is the son of Arceus, he is the key to saving the Pokémon world from a great danger. He has to travel to different regions, gather powerful Pokémon, and learn ancient secrets about his father. His friends might initially be skeptical of his new identity but eventually come to support him as he faces numerous challenges and battles against powerful foes.
Well, perhaps Naruto could be transported to the world of Arceus. He might discover his own chakra has some unique connection to the power of Arceus. Maybe he has to team up with Pokémon to fight against some dark forces that are threatening both the Pokémon world and his own ninja world.
The fanfiction could also be about the challenges Chloe faces during her pregnancy. For example, she might have health problems during the pregnancy. She could also face social issues, like dealing with people who judge her for being pregnant at a certain age or in a certain situation. The story could show how she overcomes these difficulties and grows as a person.
One plot idea could be that Natsu has to deal with the physical and emotional changes of pregnancy while still trying to be part of his usual adventures. Maybe his friends are super protective of him now.
One idea could be focusing on how her friends and family react to the news. They might be surprised, excited, or worried. For example, her best friend could offer to throw a baby shower. Another idea is exploring how Naruko prepares for the baby, like setting up the nursery or choosing baby names.
One plot idea could be that the pregnant ladybug is on a journey to find a special place to lay her eggs safely. Along the way, she meets different bugs who either help or hinder her. Another could be that she has to protect her unborn babies from a predator in the garden.
Well, perhaps the fanfiction could be about Aria's pregnancy in a world where there are some special circumstances. For example, if it's a fantasy setting, the baby could have some unique powers. It could also be about how Aria manages to balance her normal life with the upcoming motherhood, like still trying to pursue her dreams while pregnant.
One plot idea could be that Shantae discovers she is pregnant during a time of peace in her land. She then has to balance her usual duties of protecting the area with preparing for motherhood. Maybe she could start training a young apprentice to take over some of her tasks while she is on maternity leave.
Well, the plot could involve Rapunzel seeking advice from her fairy - godmother - like figure. She could be worried about passing on her long - haired trait to the baby. There could also be a sub - plot where the villain from the original story tries to take advantage of her vulnerable state during pregnancy. But Rapunzel, with her strong will, overcomes these challenges.