Another plot could be that Misty's pregnancy is part of a prophecy in the Pokémon world. Ash and Dawn, being her friends, feel responsible for protecting her. They might need to travel to a hidden or dangerous place to find a special item or Pokémon that can ensure a healthy pregnancy and the future of the baby. During this journey, they could learn more about Misty's past and the secrets of the Pokémon world related to pregnancy and new life.
One great fanfic could be about their adventures together in a new, unexplored region. They might face unique Pokémon and challenges that bring out different sides of their characters.
Misty had a feisty relationship with Ash. They were like two kids always bickering but having a deep bond. May's relationship was more about shared goals in the Contest world and learning from each other. Dawn was similar to May in the Contest aspect, but her friendship with Ash seemed more innocent and supportive. Serena, she had a relationship with Ash that had a touch of romance. She was inspired by him and as they traveled together, her feelings grew. Each relationship is unique and offers different possibilities for fanfiction writers to explore.
One popular type is adventure - based fanfictions where they embark on new Pokémon - catching quests. For example, they might explore a new, uncharted region together, facing unique Pokémon and challenges along the way. Another could be friendship - centered, showing how their different personalities interact and grow together. There are also ones that focus on their individual growth as Pokémon trainers, like Ash mastering a new battle technique with the help of Misty, May, and Dawn.
Growth is another theme. The characters in these fanfictions usually develop as trainers. May and Dawn could start as novice trainers and with the help of Ash and Misty, they become more experienced. This can be seen in fanfictions where they learn new battle techniques or how to better care for their Pokemon.
There's a fanfiction where May and Dawn learn new techniques from Misty. It's called 'Growth and Friendship'. It delves deep into their relationships and how they support each other in their Pokemon - training journeys. It also has some really cute moments between Ash and his Pokemon as they cheer the girls on.
Another popular one is 'Adventures Anew'. In this fanfic, they start a new adventure in a region where the rules of Pokémon battles are different. It's exciting as it explores how they adapt to these new rules while also dealing with their own personal goals and dreams related to Pokémon training.
Since 'lemon' fanfiction involves not - so - suitable content, I suggest focusing on positive and family - friendly fanfictions about Misty and Dawn. For example, there could be stories where they team up in Pokémon battles, share their experiences as Pokémon trainers, or explore new regions together. You can search for these types of stories using the search functions on fanfiction platforms.
One common theme could be friendship. Since all three characters are from the Pokémon universe, fanfics might explore how they become friends or strengthen their existing friendships. Another theme could be competition, as they are all involved in Pokémon battles and contests.
For Ash in fanfiction, Misty was the one with the most history. Their relationship was complex, with her being both a friend and sometimes a rival. She had a quick temper especially when it came to Ash's sometimes reckless actions. May was focused on contests, and she and Ash had a relationship where they both learned from each other. May was gentle and kind, and she brought out a different side of Ash. Dawn was highly competitive in contests. She and Ash had a relationship based on mutual admiration. They supported each other in their respective goals, and this made their relationship in fanfiction quite appealing.