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.
One common theme is the growth of their relationship. It often starts from friendship and gradually develops into love. Another theme is the Pokemon journey. Their adventures with Pokemon are often intertwined with their relationship development. Also, self - discovery is a theme. As they interact more, they learn more about themselves and their feelings for each other.
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.
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.
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.
The main characteristic to avoid in such fanfics is the adult or inappropriate content associated with the 'lemon' tag. This includes explicit sexual scenes which are not suitable for general audiences.
Well, 'The Unspoken Promise' is a really good Ash x Serena fanfic. It shows how their unspoken feelings gradually surface over time. 'Serena's True Feelings' is also worth reading. It delves into Serena's emotions in a very detailed way. And 'Ash's Discovery' is where Ash finally realizes his true feelings for Serena in a rather touching storyline.
Well, there's this fanfiction called 'Serena's Dark Devotion'. In it, Serena's yandere nature is quite intense. She goes to great lengths to protect Ash from any potential rivals. It's a really engaging read as it shows a different side of Serena that we don't usually see in the original series. It plays on the idea of her love being so strong that it turns into this possessive, yandere - like love.