One possible storyline could be the brother being a Slytherin while James is in Gryffindor, creating a lot of family tension. They could start off at odds but gradually come to understand and support each other. For example, the brother might initially be involved with some not - so - nice Slytherin groups, but through James' influence and some difficult experiences, he realizes the importance of family and loyalty.
One possible storyline could be that James Potter's little sister is a bit of an outcast in the wizarding world because she doesn't have the same brash and popular personality as James. Maybe she's more into books and research. She could struggle to find her place among the Gryffindors who idolize her brother. Another could be that she has a special power that she's afraid to show because she doesn't want to be compared to James all the time. And she might form an unlikely friendship with someone from a different house, like a Ravenclaw, who helps her explore her own identity away from her brother's shadow.
One interesting storyline could be that Harry discovers his moon powers during a full moon at Hogwarts. Maybe he can communicate with magical creatures that are only active during the full moon. Another could be that his moon powers are linked to a hidden prophecy, and Voldemort wants to steal those powers for himself.
One interesting storyline could be that his younger siblings are sorted into different houses at Hogwarts. For example, one might be in Hufflepuff while Harry is in Gryffindor. This could lead to some sibling rivalry as well as moments of them coming together to face challenges. Another could be that his younger siblings have unique magical abilities that Harry doesn't possess, and they end up helping him in unexpected ways during his battles against Voldemort.
Well, a storyline could revolve around the mystery of her blindness. Maybe it was caused by a dark spell when she was a baby, and as the story progresses, Harry and his friends try to find a way to reverse it. Meanwhile, she is learning to be independent and strong. She could also form a special bond with some magical creatures that are attracted to her unique situation. For instance, a thestral might befriend her because she can sense its presence without seeing it in the normal way.
Perhaps a fanfiction could show Harry's relationship with his professors in a new light. Some professors, like Professor Snape, might initially be unsympathetic, seeing it as a Muggle weakness. But as the story progresses, they could come to understand the gravity of his situation and help him in their own ways. Dumbledore, on the other hand, could use his wisdom to guide Harry in accepting his condition and still being a great wizard.
One possible storyline could be that Harry discovers his angel wings during a dangerous battle at Hogwarts. The wings give him the ability to fly faster and more gracefully than a broomstick, allowing him to outmaneuver the dark forces. He could use them to rescue his friends from precarious situations, like flying them to safety when the castle is under siege.
In some fanfictions, James Potter's brother might be involved in a forbidden love story. He could fall in love with a witch from a different, perhaps ostracized, magical community. This would create a lot of drama as he has to balance his family loyalty to the Potters and his love for this witch, all while dealing with the prejudices of the wizarding society.
A more complex storyline could involve Naruto's PTSD affecting his relationships. He might push away his friends and loved ones because he doesn't want them to see his vulnerable side. The fanfiction could then explore how his friends try to break through his walls and help him heal from his past traumas.
One possible storyline could be the chaos that ensues during the wedding preparations. Maybe the venue has some last - minute issues, like the decorations not being set up correctly or the catering going wrong. Another could be the discovery of a long - lost relative who shows up and brings some unexpected family drama. For example, this relative might have a claim to a family heirloom that was supposed to be part of the wedding.
A great plot idea could be that in the fanfiction, James Potter comes back as a ghost or some kind of spectral form. He then accompanies Harry on his adventures, giving him advice and helping him in battles. They could also have heart - to - heart conversations about love and family. For example, James could share his experiences with Lily with Harry, and in turn, Harry could tell James about his own feelings for Ginny. This would not only strengthen their bond but also add a new dimension to the Harry Potter universe in the fanfiction.