Well, in this fanfiction, it could show the different ways the Simpsons family reacts to Smithers being sick. For example, Homer might make some silly comments about it, while Marge might feel sorry for him. Lisa could even try to find a way to help him get better. And Bart might see it as an opportunity to play some pranks around the power plant in Smithers' absence. The fanfiction could also explore how Smithers' illness makes him reflect on his life, his loyalty to Mr. Burns, and his own personal relationships in Springfield.
Maybe it could be about how Smithers' sickness affects his work at the nuclear plant. For example, Mr. Burns might struggle to function without Smithers' efficient assistance, leading to some comical situations at the workplace.
Mr. Burns might try to take care of him. Despite their strange relationship, Burns could feel some sense of responsibility or concern for his loyal assistant.
Mr. Burns would probably visit. After all, Smithers is his loyal assistant, and Burns would be lost without him. He might come with some strange 'cure' he heard about.
There might be a fanfiction where Smithers has to babysit the Simpson kids. This could lead to all sorts of humorous situations as he tries to impose his own sense of order on the unruly bunch. He might be shocked by Bart's pranks and struggle to deal with Lisa's intellectual questions.
In the 'joho gets sick fanfiction', it could be that Joho's illness is a mysterious one. His family and friends are worried sick. They search for a cure everywhere and in the process, they discover some secrets about Joho's past that are related to his current condition.
In the 'jace gets sick fanfiction', it might involve Jace getting a mysterious illness. This leads to a search for a cure, with his family and allies scouring the land for rare herbs or magic spells to heal him. They face many challenges along the way, such as dangerous creatures guarding the ingredients they need.
Maybe Sonic's friends will take care of him. They could bring him medicine and make sure he rests. For example, Tails might use his inventions to find a quick cure.
Maybe Kenichi gets sick just as a big tournament or important event is about to happen. His team has to decide whether to participate without him or wait for his recovery. This creates a lot of tension and internal conflict within the group.
Well, the plot could involve Robin's friends rallying around to take care of him. Maybe they bring him soup and keep him company while he's in bed recovering.
Well, one possible plot could be that Elsa's sickness is a magical ailment. Maybe she got it from using too much of her ice powers at once. Her sister Anna would then be worried sick and try to find a cure. She could search all over Arendelle and even beyond for someone who can help Elsa get better.