In fanfiction, they could also be developed through their relationships with other characters. For example, how they interact with their teammates who are jealous of their partnership. This would force them to grow as individuals and as a duo. They might have to learn to handle the jealousy in a positive way, which could lead to new character traits emerging.
For Sawamura, his character could be developed by exploring his insecurities more deeply. In fanfiction, he could have moments where he doubts his abilities as a pitcher, not just in terms of his skills but also his mental strength. Miyuki could then be the one to help him through those tough times, which would strengthen their bond.
Another interesting plot could be a time - travel fanfiction. Miyuki and Sawamura are sent back in time to the early days of their baseball careers. They use their present - day knowledge and skills to change some of the mistakes they made in the past, which in turn has a big impact on their current team's success.
For 2D, you could explore his insecurities more deeply. Maybe he's insecure about his voice compared to Ace's. So, he starts taking vocal lessons from Ace in the fanfiction. This would not only develop his character but also show his determination to grow as an artist.
For Bart, you could explore his softer side more. Show how he really cares about his family deep down, even if he acts out. For Lisa, perhaps show her struggling with non - academic things like making friends outside of her usual intellectual circle.
You could also develop their characters through their relationships with other characters in the fanfiction. If they have friends or foes, how they interact with them can reveal more about who they are. For example, if they have an enemy, do they fight back bravely or try to find a peaceful solution? This can tell us a lot about Reiji and Xiaomu.
Victoria's character can be developed by making her more assertive. In the context of fanfiction with Agent 47, she could start to take on more dangerous tasks and prove herself. For example, instead of always relying on Agent 47 for protection, she could save him in a crucial moment, which would show her growth and independence.
For Hansel, you could show his growth from a scared little boy to a brave young man. Maybe he starts learning self - defense techniques after the encounter with the witch. Gretel could be developed as a more strategic thinker. For example, she could start making maps of the forest and surrounding areas to prevent them from getting lost again.
For Shane, his character can be developed by showing his insecurities behind his confident facade. Maybe he's afraid of not living up to his family's musical expectations. For Mitchie, her growth could be shown as she becomes more assertive in the music world. For example, she could start taking more risks with her music style after being influenced by Shane.
One way to develop both characters is through their relationships with other characters in the fanfiction world. Agent 3 could be made to interact with a mentor - like figure who helps them see a different perspective on their work. Agent 4 could form a friendship with a new recruit and learn to be more of a leader. This would not only develop their individual characters but also show how they influence those around them.
One way is through shared secrets. For example, Ace could tell Marco a secret he's been holding about his past that he hasn't told anyone else. This would deepen their connection during their cuddle time as it shows a new level of trust.
One way to develop their characters is through family influence. Violet's family has a big impact on her life. If in the fanfiction, her family initially disapproves of her relationship with Tony, it could force both of them to grow. Violet might become more assertive in standing up for what she wants, and Tony could learn to respect and navigate her family's expectations. This would not only develop their individual characters but also their relationship.