If Naruto becomes the Juubi Jinchuuriki in fanfiction, it would be a game - changer. He could potentially change the entire ninja world. His influence would be felt everywhere. With such power, he could even reshape the relationships between the different ninja villages. He might also have to deal with the fact that many would fear his new - found power, and he would have to prove that he's still the same Naruto at heart, just with a whole lot more power to protect those he loves.
In a fanfiction where Naruto becomes the Juubi Jinchuuriki, his appearance might even change. He could have markings or an aura that shows his new status. His role in the shinobi world would be completely redefined. He would no longer be just a powerful ninja but a being on a whole different level. He could use the Juubi's power to heal the land that has been damaged by years of war. And his enemies would have to think twice or even a hundred times before attacking him as his power would be so overwhelming that it could mean instant destruction for those who oppose him.
Well, in this kind of fanfic situation, Sakura could also become more protective of Naruto. Since a jinchuuriki is in a rather dangerous position, she might start to see him as someone who needs her support more than ever. She could try to keep his secret safe from those who might want to harm him because of it.
In this fanfic, Naruto might gain incredible power. He could have enhanced physical abilities like super strength and speed. His ninjutsu might also reach a whole new level, allowing him to perform feats that were previously impossible.
Sakura's teammates Naruto and Sasuke could be her allies. Naruto might support her with his charisma and influence among the villagers, while Sasuke could offer his combat expertise and strategic knowledge.
His relationship with Sakura would change. Sakura might be more in awe of him, but also worried about his new power. She would try to be there for him as a medic - ninja, ready to heal him if the power gets out of control.
His character could become more confident. With the power of the Juubi, Naruto would know he has the ability to protect his village and those he loves. He might also become more solitary at times as he tries to understand and control the new power within him. He would have to grow in terms of his wisdom to use the power responsibly.
In this fanfiction, Naruto Jinchuuriki might have god - like powers such as extreme strength. They could potentially have the ability to control nature on a large scale, like summoning massive storms or earthquakes. Their physical endurance might be enhanced to the point where they can withstand attacks that would normally be fatal.
Rock Lee could be a great ally for Sakura in this fanfiction. His unwavering determination and loyalty would be assets. He could help Sakura train physically and also be a source of moral support. Also, Tsunade, Sakura's mentor, would surely play a role. Tsunade could offer her wisdom and guidance, especially in matters related to leading the village, as she was once a Hokage herself.
Her friends Naruto and Sasuke could be her main supporters. Naruto, as the Hokage or a very influential figure in the village, could publicly endorse Sakura's bid for kage. He might see in her the qualities that are necessary for leadership. Sasuke, with his power and unique perspective, could also support her privately by providing advice on security and dealing with external threats. Their combined influence would give Sakura a significant boost in her journey to become kage.