Kakashi would probably be very calm at first. He's an experienced ninja who has seen a lot. He'd gently pat Naruto on the back, offering silent comfort. Then he might start to speak softly, asking Naruto what's wrong in a gentle voice.
Sasuke might be in shock at first. He can't believe that Naruto is dying in his arms. He may feel a great sense of guilt, thinking that he could have done more to prevent it.
Well, in some versions of this fanfiction, it might be that Naruto uses a powerful and forbidden jutsu to defeat an overwhelming foe. This jutsu drains his life force, and Sasuke, who has just realized how much Naruto means to him, catches Naruto as he collapses. It could also be that Naruto is poisoned, and Sasuke tries his best to save him but fails in the end, and Naruto passes away in his arms.
Perhaps Naruto has just learned some dark secrets about his past, such as the truth about his parents' death. Discovering such painful truths could easily make him break down and seek comfort in Kakashi, who he looks up to as a mentor. Also, it could be that he's feeling lonely. Despite having friends, there are times when the weight of his responsibilities makes him feel isolated, and crying in Kakashi's arms is a way to let out those pent - up emotions.
One emotional moment could be Thor's reaction. He might be filled with grief, disbelief, and a sense of helplessness. His usually strong and mighty self is shattered as he holds Loki in his arms. Another moment could be Loki's final words, if there are any in the fanfiction. His words might be a confession of his true feelings towards Thor, perhaps regret for past actions or simply an expression of love for his brother. It could also be the moment when other characters, like the Asgardians, learn of Loki's death. They may have mixed feelings considering Loki's complex past, but still, his death would be a significant event that shakes the Asgardian community.
Another reason could be related to Kakashi's past actions. If there are some secrets or things Kakashi did in the past that come to light and Naruto doesn't like them, he could snap at Kakashi. Naruto has a strong sense of justice and loyalty, so if he feels betrayed or misled by Kakashi, his reaction could be to snap.
Yes, there might be some fanfictions like that. In some fan - created stories, Kakashi could use hypnosis as an unorthodox training method for Naruto. It could be a way to help Naruto access deeper levels of chakra control or overcome mental blocks.
Well, it could strain their relationship. Avoidance usually creates distance, and in this case, Kakashi might feel hurt or confused as to why Naruto is avoiding him.
One possible reason could be that Naruto might be trying to prove his independence. He has grown and wants to show that he can handle things on his own without always relying on Kakashi's guidance.
Their relationship is like a mentor - mentee bond. Kakashi has trained Naruto, and when he sees Naruto achieve great things, it can be overwhelming. For example, when Naruto masters a new jutsu that Kakashi thought was difficult for him, Kakashi might cry out of joy for Naruto's accomplishment.