In the fanfic, Kakashi might neglect Naruto's training due to a variety of reasons. He could be preoccupied with his own research or a secret mission that demands his full attention. There could also be a misunderstanding between him and Naruto. Maybe Naruto has done something that Kakashi misinterprets, causing him to distance himself from Naruto's training. Additionally, the fanfic could introduce new characters or plot elements that draw Kakashi's focus away from Naruto. For example, a new threat to the village that Kakashi feels he must handle alone, thus neglecting his duties as Naruto's trainer.
Maybe Kakashi is preoccupied with other important missions. He is a highly - skilled and often - needed ninja. There could be some top - secret missions that require his full attention, leaving him no time to train Naruto properly.
Naruto might also try to find alternative ways to gain strength. He could explore the forest around the village to find new training areas or discover new chakra - related phenomena. He has a curious nature, and this could lead him to stumble upon something that gives him an edge in his training, like a hidden hot spring that has special chakra - enhancing properties.
The neglect in the fanfic probably makes Naruto's growth more difficult. He might not have proper guidance, so his chakra control or combat skills may not develop as smoothly. This could also make his relationships with other characters more strained. For example, he might envy those who get more attention from Kakashi. Without proper training, he may struggle more in battles and his overall progress in becoming a stronger ninja would be hampered.
Perhaps he's been influenced by someone who gives him bad advice. For example, if someone tells him that natural talent is enough and training is overrated. Also, he could be dealing with some personal problems, like a conflict within his family or among his friends that takes up all his time and mental energy, causing him to neglect training.
It could also have caused a rift between her and Kakashi. Sakura might start to resent him for not believing in her or giving her the proper training. This could affect the team dynamic. Maybe she would start to distance herself from the team and try to find her own path, which could lead to some interesting plot developments in the fanfiction. For instance, she could end up joining a different ninja squad temporarily to get the training she needs.
Well, Kakashi might start by spending more time with Naruto. He could train Naruto more intensively, like teaching him new jutsu. Maybe he also shares his own experiences to give Naruto some guidance and motivation.
In such a fanfic, Naruto's character development could be severely affected. He might become more withdrawn and lack the confidence he gains with Kakashi's proper guidance. Without Kakashi's attention, he may struggle to learn advanced ninja techniques as effectively, leading to a slower growth in his skills. This could also make him more vulnerable to the negative influences around him, like the villagers' scorn, and might even drive him towards darker paths in search of power and recognition.
Well, Kakashi might introduce Naruto to more strategic ways of fighting. For example, he could teach Naruto how to better analyze his opponents before attacking. Naruto, who was previously more impulsive, may start to hold back and look for the right moment to strike, like Kakashi does with his Sharingan.
Well, it could make him more desperate to catch up. He might become more self - doubting at first. But then, as he realizes his mistake, he could develop a stronger sense of determination to overcome his lack of training. For example, he might start training in more unorthodox ways to make up for lost time.