What could be the plot of a fanfiction where Harry forgets Ginny's birthday?

At first, Ginny would be hurt and disappointed. But being Ginny, she'd also be a bit defiant. She might act like it doesn't matter that much in front of Harry, but then go and pour her heart out to Hermione. She'd be thinking about all the times she remembered important things for Harry, and feeling a bit let down. And she might start to distance herself from Harry until he makes it up to her.

Well, the plot could be about Percy feeling really sad and left out when everyone forgets his birthday. Maybe he starts to question his friendships. He could go off on his own for a while, and then his friends realize their mistake and try to make it up to him with a big, surprise celebration.

Maybe in the fanfiction, Voldemort devises a plan where Snape forgets Harry to disrupt the Order of the Phoenix's plans. Without Snape's knowledge of Harry and his role in the prophecy, things start to go awry. Harry has to find a way to make Snape remember, perhaps by going on a quest to find a magical relic that can restore memories. Hermione and Ron would be by his side, of course, providing their usual support and knowledge.

One possible plot could be that in this crossover world, 'Harry' as Naruto has to face the same kind of challenges Naruto did in his own world, like protecting the village. But with Ginny as Hinata, their relationship could develop in a unique way. Maybe Ginny, like Hinata, is shy at first in expressing her feelings towards 'Harry' but gradually becomes more confident as she sees 'Harry' grow into a great leader. And they could team up to fight against common enemies who threaten their 'village' which could be a mix of elements from both the Harry Potter and Naruto universes.

One plot twist could be that Harry is actually protecting Ginny and the real father. He might know some dark secret about the father that would put them in danger if it were known, so he pretends to be in the dark about the situation.

In this fanfiction's afterlife, Harry and Ginny might be in a place where time has no meaning. They could be constantly surrounded by a warm, golden light that represents all the love and positive energy they've created during their lives. They start to discover hidden powers within themselves that allow them to shape the afterlife realm. For example, they might create beautiful gardens filled with magical plants that only exist in their memories from Hogwarts. Their relationship becomes even deeper as they work together to make this afterlife place a haven for other souls.

Maybe in this fanfiction, they are at the lake to practice some magic. Ginny could be showing Harry a special spell she learned, and they end up having a little magical adventure right there by the lake. For example, they might accidentally summon some friendly magical creatures from the water.

Well, it could be about a friendly duel for practice. Maybe they are trying out new spells they've learned at Hogwarts. Harry might use his signature spells like Expelliarmus, while Ginny shows off some of the more advanced spells she's picked up from the D.A.

Well, one idea for the 'Harry and Ginny elope fanfiction' plot is that Ginny convinces Harry to elope. She's always been a bit of a rebel. They might leave Hogwarts in the middle of the night using magic to cover their tracks. They could end up in a magical forest where they discover new magical creatures and have adventures together, all while keeping their elopement a secret from their families.

One possible plot could be that Harry and Ginny are wrongly accused and sent to Azkaban. They then have to find a way to prove their innocence while dealing with the dark and dreary environment of the prison. They might discover a conspiracy within Azkaban that is related to the real culprits they are being framed for.