In some fanfictions, Boruto is written as being jealous of Naruto's popularity and status. He may feel that he can never live up to his father, and this jealousy turns into resentment. So, he starts to act out against Naruto, whether it's by spreading false rumors about him or directly confronting him in a hurtful way. This can be a very emotional and complex situation for both of them.
Often, in fanfictions, power struggles can lead to Boruto hurting Naruto. If Boruto becomes too power - hungry and Naruto tries to stop him from going down a wrong path, Boruto might see it as Naruto trying to keep him weak. This can lead to conflict between them. Also, there are times when Boruto blames Naruto for the death of someone close to him (even if it's not Naruto's fault), and in his anger, he hurts Naruto.
In fanfiction, it's common to see a scenario where Boruto is influenced by the wrong people. Maybe some anti - village elements try to sway him. Naruto would then discipline Boruto by showing him the true nature of those people and how they could harm the village and his loved ones. He would also keep a closer eye on Boruto's activities, making sure he stays on the right path. Naruto might also increase Boruto's study of ninja ethics to prevent him from being easily influenced in the future.
One common scenario is when Sakura chooses Sasuke over Naruto time and time again. It makes Naruto feel like he's second best, which deeply wounds his heart as he loves her so much.
Often, in fanfiction, Katara can hurt Zuko's feelings by bringing up his past wrongdoings. She might do this in the heat of an argument, not realizing how much it still affects Zuko, who is trying to move past his old self. This can make Zuko feel like he'll never be fully accepted by her.
Sometimes, in fanfiction, Greyback is sent by Voldemort to target Hermione specifically. He could physically harm her to send a message to the Order of the Phoenix. Or, in a scenario where the Ministry has fallen, Greyback might hunt Hermione down in the chaos, seeing her as an easy target because of her status as a Muggle - born.
One common scenario is when Inuyasha is too stubborn to listen to Kagome. He might think he knows best all the time and not give her a chance to speak or contribute. This makes Kagome feel ignored and unimportant. For example, when they are discussing a strategy to fight a powerful enemy, Inuyasha just shuts her down without even considering her ideas.
Another scenario could be in a battle. Naruto might face an opponent who is much stronger than him. In his determination not to give up, he could keep fighting even when he's already injured. He might take hits that are too powerful for him at that moment, like a powerful genjutsu that makes him harm himself unknowingly while trying to break free, or getting caught in a powerful ninjutsu attack that damages his body severely.
One possible scenario could be that Anko is under some sort of mind - control and ends up hurting Naruto accidentally. Maybe she's been influenced by an enemy's jutsu.
One common scenario is Boruto getting to see Naruto in a super intense battle, showing off his amazing jutsu. Another could be Naruto using his power to protect the village, and Boruto watches in awe.
In certain fanfictions, a possible plot twist is that Sarada is forced to choose between her loyalty to the village and her friendship with Boruto. If she believes that Boruto's actions are endangering the village, she might end up hurting him. For example, if Boruto is involved in some sort of forbidden jutsu research that the village sees as a threat, and Sarada is put in a position to stop him by any means necessary, including using force.
One scenario could be Naruto being forced to choose between the safety of the village and Boruto's life in a dangerous situation. Maybe he has to send Boruto on a near - impossible mission for the greater good, which really hurts Boruto as he feels abandoned by his father. Another could be Naruto being under a genjutsu and unknowingly attacking Boruto, causing physical and emotional harm.