Serena's character development could be profound. First, she'd probably experience a great deal of grief. But through that grief, she could transform. She might become more fearless in battles, using Ash's sacrifice as motivation. Also, she could develop leadership qualities. Since Ash is no longer there to lead in some situations, she has to step up. She may also form new alliances and friendships as she tries to cope with the loss and move forward in the Pokémon world.
Maybe he loves her deeply. In the Pokémon world, love can be a strong motivator. He might see a threat coming towards Serena and know that sacrificing himself is the only way to save her.
Gwen would likely become more determined and strong - willed. Merlin's sacrifice would be a huge emotional blow to her. It might make her more resolute in fighting for the good he believed in, perhaps becoming a more fearless leader in Camelot. She may also carry a sense of guilt and a need to prove that his sacrifice was not in vain.
Their relationship would become more mature. They would have to rely on each other more than ever. With a baby, they'd have to share responsibilities, which could lead to a deeper understanding and respect for each other.
For Ash, he could develop better communication skills. In the Kalos League, he often gets so focused on battles that he forgets to share his thoughts and feelings with Serena. By learning to communicate better, he can strengthen their relationship. For Serena, she could develop more self - confidence in her own Pokémon training skills. Maybe she starts out doubting herself but as the Kalos League progresses, she becomes more assertive and makes her own mark in the Pokémon training world.
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.
Ash can be developed by having him gradually notice Serena's yandere tendencies. At first, he might just think she's being a bit overprotective. But as it becomes more extreme, he could start to feel conflicted. For example, he loves Serena as a friend but is starting to be uncomfortable with her actions. This forces him to grow and become more assertive in setting boundaries.
To develop their daughter in a fanfiction, first, think about her appearance. Does she have Ash's eyes or Serena's hair? Personality - wise, she could be shy at first but as she gets into Pokémon adventures, she becomes more confident like her father. Also, her relationships with other characters are important. Maybe she has a rival who challenges her in ways that help her become stronger both as a trainer and as a person.
Serena could be a bit shy at first. She might blush deeply and look down for a moment. But then, she would look into Ash's eyes with love and admiration. She would tell Ash how much she loves him and how she has been hoping for this moment. She would accept his proposal gracefully, and they would share a tender embrace while their Pokémon friends cheer around them.
Ash's passion for Pokémon could make their daughter extremely enthusiastic about all things Pokémon - related. She would be eager to learn about different Pokémon species and their abilities. Serena's creativity, as shown in her contest performances, could inspire their daughter to come up with unique training methods. Their combined influence would create a well - rounded character, with a balance of Ash's boldness and Serena's finesse.
Their relationship would likely grow closer. At the dance party, Ash might be a bit clumsy at first, and Serena would gently guide him, which would create some sweet and tender moments between them. They would share laughter and maybe some embarrassed blushes as they interact more intimately during the dance, deepening their bond.