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.
Naruto could develop his understanding of female ninja. Working closely with Sakura and Tsunade, he could learn about their different fighting styles and how they approach problems. Sakura could develop her own identity as a ninja separate from being in Naruto's shadow. Tsunade could develop her patience. Dealing with Naruto's exuberance and Sakura's eagerness to learn, she could become more patient and understanding, which in turn would make her an even better teacher and leader.
They could start training together more often. Since Tsunade is a great medical ninja and has a lot of combat experience, she could teach Sakura some advanced medical and combat techniques. This shared learning experience would strengthen their bond.
Naruto could be developed by having him face moral dilemmas that Tsunade has already experienced. Tsunade can guide him through these, and in the process, Naruto becomes more mature and worldly. Tsunade's character can be developed by Naruto challenging her traditional ways. For example, Naruto might suggest a new approach to handling village finances or medical training, which forces Tsunade to adapt and grow. This interaction would make both characters more three - dimensional in the fanfic.
Their relationship can be developed through shared experiences in the medical field. For example, they could work together on a difficult medical case that requires both of their skills. This would force them to communicate, trust each other, and learn from one another.
For Naruto, in high - school he can develop his academic skills. He was never really good at schoolwork in the original series, but in this fanfiction, he could have a teacher who really believes in him and helps him improve. This would not only make him more well - rounded but also give him a new sense of pride. Sakura can develop her emotional intelligence. High - school is full of emotional situations like crushes and friendship dramas. Sakura can learn to understand and handle her own emotions better, as well as be more empathetic towards Naruto and other students when they are going through tough times.
For Naruto, you could show his growth in understanding his feelings for Sakura. Maybe he starts to realize that his protectiveness towards her is more than just friendship. He could start to show small gestures of affection that are more romantic in nature.
I think all three are great in their own ways. Naruto is the heart of the story, his optimism and determination are infectious. Sakura has the potential to be a complex and strong female character. She can have her own character arc that is independent yet related to Naruto and Tsunade. Tsunade, with her long history and powerful abilities, can be a source of both conflict and resolution in the fanfictions. For example, her past experiences can create interesting plot twists when combined with the current situations of Sakura and Naruto.
Tsunade can be developed in terms of her vulnerability. As the Hokage, she is often in a position of power and authority. But in this fanfic concept, being ticklish reveals a more human and approachable side of her. She may become more open to Naruto's antics and show a softer side that she usually keeps hidden. This can also lead to her trusting Naruto more and sharing more of her thoughts and feelings with him.
Perhaps a shared experience like fighting a common enemy could bring them closer. If they are in a battle together and Naruto saves Tsunade's life, or vice versa, it could be the start of a deeper emotional connection. Tsunade might then open up about her family to Naruto, and Naruto could share his own feelings about family, as he has always longed for one.
It can start with mutual respect. Naruto respects Tsunade as the Hokage and for her great strength. Tsunade, in turn, can see Naruto's potential. For example, Tsunade could start mentoring Naruto more closely, like sharing her experiences during the wars which Naruto hasn't been through yet. This would create a bond between them.
Another way to develop their relationship is through a common goal. Let's say there is a new threat to the village that requires both their skills. Tsunade's medical expertise and Naruto's combat abilities are both needed. As they work together towards this goal, they learn to trust each other more, share their techniques, and their relationship evolves from acquaintances to comrades and then to close friends.