Naruto might also isolate himself in certain fanfic scenarios. He feels that no one can truly understand the depth of his grief. He spends time alone, reflecting on all the things Jiraiya taught him and the memories they shared, like their time training on that toad -infested island.
Some fanfictions depict Naruto seeking comfort from his friends. Although he is depressed, he realizes that Jiraiya would want him to rely on those close to him. So he opens up to Sakura, Kakashi, and others about his feelings, and together they help him gradually come out of his slump.
Sometimes Naruto copes by throwing himself into his training. He uses the pain of losing Jiraiya as fuel to become stronger.
In fanfiction, Jiraiya's death can also be used to explore themes of sacrifice. He sacrificed himself for the greater good, and this can be further elaborated in different stories. For example, some fanfictions might show how his death inspired other characters to be more selfless.
Naruto is devastated. He feels a huge void in his heart. Jiraiya was the one who believed in him from the start, and his death makes Naruto question a lot of things. He might even start to doubt his own strength for a while.
One scenario could be that Jiraiya is poisoned before his fight with Pain. In the fanfiction, an enemy within the village who is secretly working for Pain's forces might have poisoned his food or drink. So, when he goes to face Pain, he is already weakened, and this ultimately leads to his death. Another possibility is that Jiraiya's death is a result of a time - traveling plot. If there is time - travel involved in the fanfiction, his actions in the past might accidentally create a situation where he has to die to preserve the timeline.
He might become more determined. Losing Jiraiya was a huge blow, but it could fuel his desire to become stronger and protect the village even more.
Kakashi could step up more as a mentor. He already has a connection with Naruto and could help him develop his skills further.
One possible scenario could be that Naruto leaves to train in isolation. He might feel that he needs to become stronger on his own without the guidance of Jiraiya, and so he sets off to find new ways to improve his skills.
He is often shown as being extremely sad. Jiraiya was like a father figure to Naruto, and his death leaves a huge void in Naruto's life.
At first, Naruto might isolate himself. He doesn't want to be around others as he is so consumed by his grief. He just sits in his room or goes to a quiet place where he can cry alone and think about Jiraiya.
His character may become more withdrawn at first. Losing Jiraiya, who was like a father figure to him, could make Naruto less open and more focused on his internal pain.