They could start with a mystery. For example, Sakura starts to have strange dreams or powers that she can't explain, which leads her to discover her connection to Madara. Writers can also use existing characters to react to this revelation. Naruto and Sasuke, for instance, would have very different reactions to finding out Sakura is Madara's daughter.
Their relationship could start with mutual distrust. Madara might see Sakura as a weakling from the new generation, while Sakura would be wary of Madara's power and his past actions. But as they face challenges together, they gradually start to respect each other. For example, if they are in a battle against a powerful enemy, Madara might be impressed by Sakura's determination and her ability to hold her own in combat.
Sakura could develop by becoming more confident in her combat abilities. As she faces Madara, she realizes that she has more strength and potential than she thought. For instance, she might start using her medical ninjutsu in more creative ways during the fight, like using it to enhance her physical attacks or disrupt Madara's chakra flow.
Well, if we consider Sakura as Madara's daughter in fanfiction, one could imagine a whole different dynamic for Sakura's character. She might inherit some of Madara's powerful abilities, like his Sharingan (if we stretch the concept). It could also change her relationships with other characters. For example, her relationship with Sasuke might be more complex as Sasuke has his own connection to Madara. But again, this is all just fan - made speculation.
At first, their relationship might be one of mistrust. Madara, being from a different era and having his own set of beliefs, may not trust Sakura easily. But as they face challenges during their time travel, like avoiding being detected by the time guardians or fixing the broken timeline, they start to rely on each other. Sakura's kindness and determination could gradually break down Madara's walls, and they could develop a friendship or even more over time.
At first, their relationship would likely be one of mistrust. Madara, being from a different era and having his own goals, would be suspicious of Sakura. Sakura, on the other hand, knows Madara as a villain from her own time. But as they are forced to rely on each other during the time travel, they might start to see each other in a new light. For example, Madara could see Sakura's medical skills and be impressed, while Sakura could witness Madara's strategic mind at work.
At the beginning, it might be a bit rocky. Madara, with his proud Uchiha heritage, may initially look down on Sakura. But Sakura, being headstrong, doesn't back down. She challenges him with her medical skills and combat knowledge. This sparks an interest in Madara, and he starts to see her in a different light.
His character might develop a sense of protectiveness. For example, he may start to see Sakura as someone worthy of his protection, which is a new feeling for him as he was previously more focused on his own goals in the Naruto universe. This could make him more empathetic towards others in general.
Well, it could be through his powerful ninja techniques. Maybe he uses his Sharingan to paralyze Sakura, or perhaps he physically restrains her with his great strength. In fanfictions, there are many creative ways for such a scenario to play out.
The relationship might begin with a misunderstanding. Madara might mistake Sakura for someone who is trying to cause trouble for him. However, Sakura clears up the misunderstanding quickly. After that, they find themselves in the same club, perhaps a science club. They work on experiments together and start to respect each other's intelligence. As they attend club events and school functions together, they become closer. Madara starts to protect Sakura from bullies in the school, and Sakura helps Madara with his studies. This mutual support and care lead to a romantic relationship developing between them.
At first, their relationship could be one of teacher - student in a way. Madara, with his vast knowledge of jutsu and the ninja world, could teach Sakura some ancient Uchiha techniques. Sakura, with her thirst for knowledge, would be eager to learn. Through this exchange, they would get to know each other better. As Sakura starts to master these techniques and use them in her own way, Madara might be impressed by her creativity. This could lead to a relationship that evolves from a simple teacher - student dynamic to a more equal partnership, and perhaps even something more romantic over time as they share more personal stories and experiences.