The Hokage at the time, whether it's Tsunade or someone else, would likely get involved. They would allocate resources and ensure that the best medical care is provided. Additionally, some of the older ninja who knew Kakashi since he was young, like Iruka, might offer moral support and assist in any way they can, like gathering information or running errands related to his treatment.
Another scenario could be in a mission gone wrong. The fanfiction might depict a mission where Naruto and his team are caught off - guard by an ambush. There could be a large number of well - coordinated enemies, and Naruto might end up being the main target, getting severely injured as he tries to fight them off and protect his team.
One common plot development could be his comrades rallying around him. For example, Naruto might be determined to find a way to heal him quickly, using his newfound powers or connections. Another could be Kakashi reflecting on his life while injured, thinking about his past mistakes and how he can grow from them if he recovers. Maybe he also has some sort of vision or encounter with a long - lost friend or relative in his weakened state.