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.
Miu could be a key character. She might be the one who stays by Kenichi's side constantly, using her skills to keep him as comfortable as possible while he's sick.
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.
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.