There might be a fanfiction where Danny is grounded because he missed school too many times due to his ghost - fighting duties. In this story, he has to find a way to balance his normal life and his secret identity while being stuck at home. He could use this time to study more about his powers or try to communicate with other friendly ghosts without leaving his room.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). It has a large collection of Danny Phantom fanfictions, and you can use the search function to specifically look for 'grounded' ones. Just type in 'Danny Phantom grounded' in the search bar, and it should show you relevant stories.
Maybe it's one of his old enemies who has found a new way to attack him. For instance, Vlad could come up with a more devious plan that manages to catch Danny off - guard and injure him. Vlad has always been a formidable foe, and he might use Danny's overconfidence or a moment of weakness against him.
Yes, there could be. Some fanfiction might explore the concept in a non - adult way, like through some sort of magical or science - fiction - inspired plot that results in a male character like Danny Phantom experiencing a pregnancy - like situation in a very PG - 13 or family - friendly manner. For example, it could be a body - swapping situation where he ends up in a female body that is pregnant, and the story focuses on the comical and adventurous aspects of dealing with that rather than anything inappropriate.
One possible plotline could be Danny trying to hide his sickness from his enemies while still fighting ghosts. He might be weaker than usual, but his determination keeps him going.
Obviously, Danny would be the main character since he's the one getting sick. His friends, Sam and Tucker, would also play important roles. They would likely be the ones trying to help Danny get better and keep his secret if he doesn't want it known.
One possible scenario could be Danny getting injured during a fight with a powerful ghost. Maybe he underestimated the ghost's new power and got hit by a strong energy blast that left him with a serious injury.
A 'trunks gets grounded fanfiction' might explore various aspects. It could be about Trunks, a character from a particular series, getting punished by being grounded. This could lead to different scenarios such as how he copes with the restrictions, his relationships with other characters during this time, and his internal thoughts and growth. Maybe it shows his struggle between his normal adventurous self and the confined situation he's in now.
A cool plot twist could be that the pregnancy is a sign of Danny's evolution into a new form. Instead of it being a normal biological pregnancy, it's a supernatural transformation. As he progresses through the 'pregnancy', he gains new powers and abilities that he has to learn to control, and in the end, he emerges as a more powerful version of himself.
In this fanfiction, it could be that Danny Phantom meets a Danny Phantom from a parallel fan - made story. At first, they don't trust each other. But as they learn more about each other's worlds, they realize that there are some common elements that are being threatened. It could be that a powerful ghost is trying to rewrite all the fanfic universes related to Danny Phantom. So, they must combine their strengths and knowledge to stop this from happening.