One possible plot development is that Tsunade could step up her efforts in uniting the other villages. Since Naruto was a symbol of hope and unity, his death might prompt Tsunade to work even harder to prevent further chaos among the ninja villages. She could initiate more diplomatic meetings and treaties to ensure peace in Naruto's memory.
A third possible plot development is that Tsunade might face a moral dilemma. For example, she could be tempted to use some dark or forbidden jutsu in order to resurrect Naruto. This could lead to a conflict within her as she knows the potential consequences of such actions. It could also create a divide in the village, with some shinobi supporting her attempt and others opposing it, fearing the negative effects on the village and the ninja world as a whole.
Well, Naruto might grow in his ability to handle complex situations. Hypnotizing Tsunade is no small matter. He has to deal with the consequences, and this could make him a more mature ninja. As for Tsunade, she could have a new perspective on Naruto. Before, she may have seen him as just a young, rambunctious ninja. But after this incident, she realizes his power and potential, and their relationship could evolve into more of a mentor - mentee relationship where she actively guides him in his ninja journey.
Naruto could develop more maturity under Tsunade's influence. Tsunade, being an experienced and strong - willed character, can teach Naruto how to better control his emotions in difficult situations.
A plot could develop where Naruto and Tsunade try to keep the pregnancy a secret at first. As the pregnancy progresses, it becomes harder to hide. Naruto may start to train even harder to prove himself worthy of being a father and to protect his unborn child. Tsunade, on the other hand, might face challenges from the medical community as her pregnancy at her age could be considered high - risk. And there could be a rift in their relationship as they deal with the stress and the different ways they approach the situation.
One possible plot development could be that the Hidden Villages struggle to maintain peace without Naruto's influence. His death might lead to power vacuums and political unrest. For example, some villages may try to take advantage of Konoha's weakened state. Another aspect could be how his friends and family cope. His wife, Hinata, might have to raise their children alone, and his friends like Sasuke would feel a great sense of loss and perhaps guilt for not being able to protect him. The ninja world as a whole could also lose its hope symbol, and new, darker forces might emerge, thinking that without Naruto, they can carry out their evil plans more easily.
One possible plot development could be that Sakura's tears somehow give her a newfound strength or resolve. Maybe she decides to train harder to protect Naruto in the future. For example, she could seek out a powerful teacher or a hidden jutsu to become stronger.
One possible plot development could be that Tsunade trains Naruto more intensively in medical ninjutsu. Since she's his grandmother, she might feel a stronger obligation to pass on her skills.
Tsunade's character might experience a softening as she anticipates motherhood. She could become more in tune with her emotions and less guarded. Dan, in this process, could develop into a more patient man, especially when dealing with Tsunade's mood swings during pregnancy. He would also likely become more of a home - body, focusing on building a stable family environment.
For Sakura, it could be a sign of her growing confidence and equality with Tsunade. If she initiates the kiss, it shows that she has come a long way from being a shy apprentice. She is now bold enough to express her feelings, whether it's a platonic deep love or something more complex. For Tsunade, it might make her more vulnerable. She has always been seen as a tough leader, but this moment could show that she has a soft side that she only shows to a select few, like Sakura.
One possible plot development could be that Sasuke is in a life - threatening situation, perhaps against an extremely powerful enemy. Naruto sacrifices himself to give Sasuke a chance to escape or defeat the foe. This would likely lead to Sasuke being filled with guilt and regret, and might change his whole outlook on life.
One possible plot development could be that Voldemort fully regains his power without Harry as an obstacle. The wizarding world would be plunged into complete darkness. His friends, like Hermione and Ron, might go into a deep state of despair and then form a resistance group. They would try to find other ways to defeat Voldemort, perhaps by seeking out more powerful magical artifacts or uniting with some previously neutral magical creatures.