Well, start with setting the scene. Maybe it's in the Hidden Leaf Village and Sasuke is alone in his room when the sickness starts. You can then build the plot around who discovers he's sick. If it's Itachi in some sort of AU, it could add a whole new layer of emotion. Write about Sasuke's internal thoughts as he battles the illness, his pride not wanting to show weakness but his body failing him. And don't forget to add some dialogue that shows the relationships between the characters, like his terse exchanges with those who come to help.
First, you need to decide on the cause of his sickness. It could be a curse, a side - effect of a new power, or just a common illness in their world. Then, think about how the other characters will react. For example, will Naruto be worried or a bit jealous that others are taking care of Sasuke? Also, describe Sasuke's state of being sick in detail, like his weakened chakra and how he looks paler than usual.
There might be a fanfic where Sasuke gets sick during a mission. His teammates, like Naruto and Kakashi, have to protect him while also finding a cure. This kind of story often explores the bonds between the characters in difficult situations.
One possible story could be that Naruto discovers Sasuke has joined a dark organization that is planning to destroy Konoha. Naruto, filled with a sense of betrayal and duty, decides to take revenge. He trains harder than ever, mastering new jutsu. When they finally face off, Naruto uses his newfound power to defeat Sasuke without killing him, instead making him see the error of his ways.
One idea could be that Sasuke, despite his usually stoic nature, feels a sense of worry when he hears Naruto is sick on his birthday. He could visit Naruto and bring him some traditional Uchiha herbal medicine that he secretly prepared. This would show a soft side of Sasuke and also deepen their bond in the fanfic.
The fanfic could explore how Sasuke deals with his emotions when Naruto is sick. He might be conflicted between his old rivalry feelings and his newfound, deeper feelings for Naruto. Sasuke could also be the one to stay by Naruto's side when everyone else is busy. He'd watch over Naruto while he sleeps, and when Naruto wakes up, there could be a moment of intense eye - contact that shows the unspoken bond between them.
Sasuke could play a crucial role. He might use his Sharingan to detect what's wrong with Naruto more accurately. Then he could go on a mission to find a special cure.
One possible fanfic could start with Sakura out on a solo mission in a forest. Sasuke, who has been misled by some dark force, sees this as an opportunity to get Sakura for some unknown reason. He uses his ninja skills to quickly subdue her and takes her to a hidden cave. Sakura is shocked and tries to reason with him, but Sasuke seems to be in a trance. Meanwhile, Naruto and the others start to search for her when they realize she's missing.
In addition to his family and friends, the medical ninja in the village would be involved. They would be the ones to accurately diagnose Boruto's condition. Shizune, for example, could come and check on him, using her vast medical knowledge. And the other young medical ninjas might learn from this case, as Boruto's illness could be something new or unusual, so they would be eager to assist and gain experience while taking care of him.
Yes, there might be some out there. Fanfiction platforms often have a wide variety of creative and sometimes out - of - the - box stories. You can try searching on popular fanfiction websites like Archive of Our Own or FanFiction.net. Just keep in mind that the quality and nature of these stories can vary greatly.
I'm not sure if there is such a specific fanfiction. Fanfiction topics can be extremely diverse, but this one seems rather unusual and might not be common. It could also potentially violate the spirit of the original Naruto story which focuses more on their friendship and rivalry rather than this kind of relationship.
In the 'Boruto Gets Sick' fanfiction, Boruto might experience various symptoms like a high fever, weakness, and coughing. His friends and family would likely be worried about him. They would probably take care of him, bring him medicine and try to make him comfortable.