Well, a possible plotline is that Harry's daughter is the target of a dark wizard who wants to use her to get revenge on Harry. She has to learn how to defend herself and rely on her friends, just like Harry did. Also, she could go on a journey to find a magical artifact that has a connection to her family's past.
One interesting plotline could be the daughter inheriting Harry's magical abilities but also having some unique powers of her own. She might struggle to fit in at Hogwarts because of her famous father. Another could be that she discovers a long - lost family secret that puts her in danger.
In the fanfic, the plot might be that Harry's daughter has a special gift that sets her apart from other students at Hogwarts. This gift could attract the attention of both good and bad forces. She might make new friends who help her understand and control her power. Meanwhile, Harry is dealing with his own issues as a father, like how to let her grow up independently while still protecting her. The story could also explore how the wizarding world has changed since Harry's time at Hogwarts and how his daughter fits into this new era.
In a fanfic, Naruto could inherit the Sharingan from a long - lost relative. This relative could be an Uchiha who fell in love with an Uzumaki long ago. With the Sharingan, Naruto gains the ability to predict his opponents' moves more accurately. He uses this new power in combination with his Rasengan to create new and powerful jutsus, and he also has to figure out how to control the Sharingan's curse, which comes with its own set of challenges.
One possible plotline could be Harry struggling to hide his Tourettes symptoms at Hogwarts in the beginning. He might be afraid of being judged by his classmates. For example, during a Potions class, his tics could cause him to accidentally add the wrong ingredient, leading to a minor magical mishap. Another plotline could involve Harry using his magical abilities to find a way to manage his Tourettes better. He could go on a quest to find a rare magical herb or spell that helps him control his tics. Also, his friends like Hermione and Ron could play a big role in supporting him, learning about Tourettes, and standing up for him when others are unkind.
In a fanfiction about Harry Potter having diabetes, there could be a plot where Harry discovers a new type of magic that is related to his condition. Maybe he finds that certain spells can help him better manage his blood sugar levels. His relationship with the Hogwarts staff could also be explored. For example, Madam Pomfrey might be at a loss at first as she's used to dealing with more typical wizarding ailments. But then she works with Harry to come up with a plan to keep his diabetes in check. This could also lead to a greater understanding of muggle diseases in the wizarding community.
One interesting plotline could be Naruto struggling to control the power of the curse mark. It might lead him to make some unexpected decisions. For example, he could be tempted to use the dark power in the curse mark to defeat a powerful enemy quickly, but at the risk of losing himself to the darkness. Another plotline could involve Naruto trying to find a way to remove the curse mark without anyone's help, showing his independent and determined side. Maybe he goes on a journey to find a rare herb or a hidden technique that can get rid of it.
One possible plotline could be the daughter's struggle with her father's complex reputation at Hogwarts. She might face prejudice from students who remember Snape's dark past. Another could be her discovery of her father's true love for her mother, which was hidden for so long. And she could also have a special talent in potions, just like her father, and use it to outshine others in her classes.
In a more detailed plot, Harry's newfound eagle vision might be a side - effect of a powerful spell gone wrong. He initially struggles to control it, seeing things that are too far away or too detailed all at once. As he learns to master it, he realizes it gives him an edge in Quidditch. He can spot the Snitch from an incredibly long distance, making him an even more formidable Seeker. This also draws the attention of the opposing teams who try to find ways to counter his new ability.
One plotline could be that the Basilisk eyes make Harry a target for dark wizards who want to harness his power. He has to constantly be on the run and protect himself while also trying to figure out how to control his new ability. His friends from Hogwarts could form a sort of protection squad around him, and they'd have to face many challenges together.
A great plot could be centered around their relationship with their parents. Since Harry had a difficult childhood, he might be overprotective of his sons. The twins could struggle with this overprotection while also trying to make a name for themselves at Hogwarts. Also, they could be involved in a mystery related to the Dark Arts that resurfaces, and they use their combined skills to solve it, all while dealing with the pressures of being Harry Potter's sons.
Well, a plotline might involve the snake familiar getting into trouble. For example, it could be mistaken for a dark creature by the Ministry of Magic. Harry then has to prove that his snake is not evil. Or perhaps the snake helps Harry discover a hidden part of Hogwarts. Since snakes are often associated with secrets, it could lead him to a secret chamber or passage that no one else knows about. And this could be a key to solving a mystery or finding a powerful magical item.