One common theme is the growth of their relationship. It often starts with Serena having a crush on Ash and then Ash slowly realizing his feelings for her. Another theme is adventure. Since they are both Pokemon trainers, they go on adventures together and these experiences strengthen their bond. For example, in many fanfictions, they face tough battles side by side which deepens their connection.
Well, there could be a plot where Ash's aura suddenly goes out of control during a big tournament. Serena, with her special understanding of auras, steps in to calm him down. Their auras interact in a beautiful and powerful way that not only saves the day but also makes them realize their feelings for each other.
Well, in Ash x Mirror Serena fanfiction, often there's a sense of the unexpected. Since Mirror Serena is a different version, she may have different personality traits compared to the original Serena. This can lead to unique interactions with Ash. For example, she might be more assertive or have different goals.
Maybe they enter a Pokémon tournament where the rules are very different from what they're used to. They have to adapt quickly and use their combined knowledge to win. This would test their relationship and their skills as trainers.
In this kind of fanfiction, it could be about a rivalry in high school. Ash and Dawn might be a team or a couple, and Serena is their rival. Maybe it's a battle of skills like Pokémon battles or a competition for popularity. For example, they could be competing in a school - wide Pokémon tournament, and Serena has some new strategies that Ash and Dawn need to counter.
Some fanfictions like to play with the idea of alternate universes. For example, what if Ash and Serena met in a completely different setting? Or what if their roles were reversed in some way? These alternate universe concepts can lead to really interesting and unique stories that still revolve around their relationship.
One common theme is the exploration of complex relationships. Since it's a harem concept, there's often jealousy and competition among the characters in the harem for Ash's attention. Another theme is growth. Serena, in particular, usually experiences personal growth as she deals with the challenges of being part of a harem. For example, she might become more confident or learn to better express her feelings.
Obsession is a major theme. In these fanfictions, Serena's love for Ash is often so extreme that it becomes an obsession. This can lead to her doing things like isolating Ash from his other friends. Also, there's often the theme of secrecy. Serena might try to hide her yandere side from Ash at first, which adds an element of suspense to the story.
In fanfiction, anything can happen. However, without specific details of the particular fanfic, it's hard to say for sure if Serena is pregnant. Some fanfictions might explore this plotline for the sake of drama or character development. It could add an interesting twist to the relationship between Ash, Serena and Lemon, but it also depends on the overall theme and direction the author wants to take the story.
They would probably be a bit shy at first. Ash being his usual energetic self but also respectful of Serena's space in the tent. Serena might be a bit nervous but also excited to be sharing such a close space with Ash.