To develop Goku's character in relation to Sakura, you could have him teach her about the importance of having a pure heart in combat. This would not only help Sakura grow as a fighter but also deepen their relationship. For Sakura, she could introduce Goku to the concept of medical knowledge in combat. This would make Goku think about fighting in a different way. He might start to consider how to prevent injuries during battle rather than just focusing on winning. This development of both characters would create a more interesting dynamic between them in the fanfiction.
In fanfiction, Goku's character can be developed by exploring his family side more in relation to Sakura. Maybe he sees her as a sister - like figure and tries to protect her. This would show a different side of his protective nature. Sakura, on the other hand, could be developed by her learning about Goku's simple yet determined mindset. She could then apply some of that to her own life, like being more straightforward in her goals. This would change her character in a way that makes her more confident and less self - doubting.
With Gine, her character can be developed by exploring her feelings towards Goku. She could be shown as a loving and proud mother, but also with a sense of sadness for all the years she missed with him. Her interactions with Goku could bring out her more maternal instincts, and she might start to see Goku as a symbol of hope for the Saiyan race.
For Sakura, you can develop her character by showing her growth in confidence. Maybe at the start, she's shy about wearing the ribbon, but as she discovers its significance, she becomes more assertive. As for other characters, if there's a friend character, show how their relationship with Sakura changes. For example, they might start as rivals for the ribbon but later become allies.
Develop other inmates as well. For instance, create an inmate who has a tough exterior but a soft heart. Sakura could be the one to break through that tough exterior. You can also show how different inmates have different reasons for being in prison and how those reasons shape their personalities. Some might be remorseful, while others might be defiant. By having Sakura interact with these different characters, it can enhance the overall character development in the fanfiction.
For Naruto, he could develop by learning more about leadership from Tsunade. He already has his own unique style, but Tsunade's wisdom in leading the village could give him new insights. Sakura could develop her medical ninjutsu further under Tsunade's guidance and also become more confident in her combat abilities. Tsunade herself could develop by seeing the new generation, Naruto and Sakura, grow and be inspired to take on new challenges for the village.
Sakura's character can be developed by exploring her emotional side. In the fanfiction, she could be faced with difficult decisions that test her loyalty and morality. Her relationship with Indra could bring out new aspects of her personality, like a more assertive side when she has to stand up for what she believes in. Indra, on the other hand, can be developed by delving into his past traumas. Maybe his experiences in his past battles have made him distrustful, but Sakura's presence helps him heal and become more open - minded and less cynical.
Typically, Sakura's character might be developed by showing her determination in dealing with Pain. For example, if they are in a conflict situation, she could stand her ground and use her medical and combat skills to face him. This would highlight her growth as a strong kunoichi.
Often, Sarada's character is developed through her relationship with Sakura. For example, she might start off as a bit rebellious but as she spends more time with Sakura, she learns important values like perseverance. Sakura, on the other hand, is developed as a more experienced and wiser figure, guiding Sarada.
Goku's character can be developed in this genre by having him teach Female Beerus about the joys of training and self - improvement from a Saiyan perspective. This could lead to her becoming more enthusiastic about training and less reliant on her natural divinity. Female Beerus could develop Goku by introducing him to the more complex politics and hierarchies of the divine realm. This would make Goku more aware of the bigger picture and force him to think more strategically, not just in terms of physical battles.
For Goku, his character can be developed by showing his adaptability to Ultear's world. He could learn about different types of magic and use his Saiyan ability to incorporate some aspects of it into his fighting style. For Ultear, she could grow in terms of her understanding of different power sources. Goku's simple yet strong sense of justice could inspire her to be more straightforward in her actions and less manipulative if she has such tendencies in her original character.
For Kushina, her character could be developed by exploring her past more deeply. For example, showing her early days as a ninja in training, her dreams, and how she overcame difficulties. With Sakura, her growth from a timid girl to a strong ninja can be further explored, like her insecurities that still linger and how she conquers them. In a story together, they can learn from each other's experiences and develop in new ways.