In this fanfiction, it could be that Bonnie's sickness affects his performance during the night at Freddy Fazbear's. Maybe he starts acting strangely, which scares the security guard even more. And the other animatronics might be confused about what's wrong with him. They could try different things like looking for spare parts to replace the malfunctioning ones in Bonnie that are causing the sickness.
Well, it could be about Foxy suddenly not being able to perform his usual tasks in the horror show. Maybe he has a mechanical malfunction that makes him seem sick, like his joints not working properly or his sensors going haywire.
Chica could also be a main character. She could be the one who tries to comfort Bonnie while he's sick. Maybe she brings him some virtual food or something to cheer him up. And Foxy might be another important character. He could be the one who goes on adventures to find a cure or a way to fix Bonnie. He's the more adventurous type, so it would make sense for him to be the one looking for solutions outside the normal areas in the pizzeria.
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.
In the 'bendy gets sick fanfiction', perhaps Bendy has caught a strange illness that is affecting his ability to draw or create. His friends then embark on a journey to find a cure. They might face various obstacles along the way, like dark creatures or tricky puzzles. They'll have to use their wits and friendship to help Bendy get better.
Well, perhaps in the fanfiction, Kagome's sickness is a result of some dark magic. Her getting sick could be a part of an enemy's plan to stop her from interfering in their evil deeds. Her friends then have to not only deal with her illness but also figure out who is behind it all and stop them before it's too late.
Maybe Rigby catches a strange flu. His friends try to take care of him but keep making things worse in a comical way.
In the fanfiction, Yami could be cursed by an enemy, which makes him sick. His strength starts to fade away. His friends notice the change in him and start to investigate. They discover the curse and search for a way to break it. Along the journey, they meet various characters who either help or hinder them. Yami's condition worsens, but his friends don't give up. Eventually, they find a powerful mage who can break the curse, and Yami is cured, learning valuable lessons about the power of friendship and the importance of being vigilant against enemies.