Some fanfictions might show Naruto's mental state while sick. He could be feeling down and doubting his ability to protect the village. However, the villagers, who once shunned him, now come together to support him. This change in the villagers' attitude could be a key part of the plot, as Naruto realizes that he has truly become an important part of the village even in his weakened state.
One common plotline is that Naruto's friends take care of him. For example, Sakura might use her medical skills to nurse him back to health. Another could be Naruto having flashbacks or deep thoughts while sick, perhaps about his lonely childhood. And sometimes, enemies might take advantage of his weakened state, leading to some tense situations where his friends have to protect him.
A simple plotline could be that Bella's sickness is just a normal flu, but it makes her realize how much she depends on those around her. She might have a moment of self - reflection while lying in bed sick. She could also receive some unexpected help from a stranger who turns out to be an important character later in the story.
Often, in these fanfictions, Naruto is betrayed by Sasuke again in a different way. Sasuke might side with a new group that has a vendetta against Naruto or Konoha. This could lead to some epic battles where Naruto is not only fighting his former friend but also trying to understand why he has been betrayed. It also gives room for Naruto to grow and develop new powers as he faces this new challenge alone.
Another plotline might involve Naruto's friends betraying him. Suppose Sasuke, out of his thirst for power and a twisted sense of rivalry, teams up with some dark forces against Naruto. This would create a lot of emotional turmoil for Naruto as he has always considered Sasuke a brother.
Often, in such fanfictions, Naruto is trained in special forms of chakra control. This could involve things like using chakra to enhance his senses far beyond normal levels. It might also include training in stealth and infiltration, skills he didn't focus much on before. So, the plot could revolve around him becoming a more well - rounded ninja in these aspects.
One common plotline could be Lorelai being sick and Rory having to take care of her, which would reverse their usual roles. Rory might struggle to balance her own life while looking after her mom, just like Lorelai had to do when Rory was growing up.
A third plotline might be that their sickness is caused by some sort of magical or alien virus. As they fight off the illness, they also have to figure out where it came from and how to stop it from spreading to the rest of the city. This could involve some detective work even in their weakened state.
One plotline could be that Wei Wuxian's sickness is a result of a dark spell that was cast on him during one of his adventures. His friends, like Lan Wangji, then have to search for a cure while protecting him from those who might take advantage of his weakened state.
Another plotline could involve Naruto being injured as a result of a trap. Maybe he's exploring an ancient ruin in search of some power to help protect the village and he triggers a hidden mechanism. This could lead to him being severely wounded, and his friends would need to come rescue him while also trying to figure out how to disarm any other potential threats in the area.
In some fanfictions, the villains might take advantage of his sickness. They could try to attack him when he's weak. But of course, his friends will be there to protect him. His sick days could also be a time for him to reflect on his life as a hero - in - training. He might think about his relationships with his classmates and how he can improve himself once he gets better.