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.
It could be someone completely new, an original character created for the fanfiction. Maybe a mysterious wizard who had a brief encounter with Ginny.
One possible plot twist could be that Ginny has some ulterior motive for lying. Maybe she wants to protect Harry from a greater danger. For example, there could be a dark wizard threatening to harm Harry's family if Ginny doesn't create this false narrative. Another aspect could be the reaction of the wizarding community. Some might believe her immediately, while others might be skeptical. This could lead to a divide in the community, with some supporting Ginny and some trying to expose the lie. Also, how Harry reacts when he discovers the lie would be a major part of the story. He might feel betrayed at first, but then as he uncovers the reasons behind it, he could come to understand and forgive Ginny.
Well, a possible plot twist could be that Snape has a hidden identity or past that is only revealed after he and Harry get married. Maybe he is related to an ancient wizarding family that has a connection to Harry's own family history. Also, the way Ginny died could be a misdirection. It could turn out that she faked her death to escape some greater danger, and when she returns, she finds Harry married to Snape, creating a huge love triangle and a whole new set of complications in the fanfiction.
It could also lead to a mystery aspect in the fanfiction. Harry, being the hero he is, might start to investigate who the real father is. This could uncover a lot of secrets in the wizarding world, secrets that might be related to old families, forgotten spells, or hidden alliances. The whole story could then spiral into a complex web of mystery and drama as Harry delves deeper into the truth.
It could be someone Ginny had a past relationship with before Harry. Maybe an old schoolmate or a character from a side plot in the fanfiction.
One possible plot could be that the child from the future comes back to prevent a great disaster. Maybe a dark wizard in their future time has found a way to rewrite history and the child has to make sure Harry and Ginny meet and fall in love at the right time. The child might also have some special powers inherited from their parents which they use to face various challenges in the past.
Well, a plot twist might be related to their families. What if Harry's fame starts to cause problems in their new neighborhood? Some people might be too curious or intrusive. Also, Ginny could get an unexpected job offer in a far - off place, and they have to decide whether to stay in their new home or move again. And it could be that there's a magical creature living in their attic that they didn't know about at first, and it causes chaos in their new living situation.
One possible plot twist could be that while exploring the Department of Mysteries, Harry and Ginny discover a hidden prophecy related not just to Harry but also to Ginny. This prophecy might reveal that Ginny has a crucial role to play in the final battle against Voldemort that no one had anticipated before.
In fanfiction, their first child might face some challenges. Since Harry is so well - known, the child could feel a lot of pressure to live up to his father's reputation. The story could revolve around how the child overcomes this pressure, perhaps with the help of Ginny's wise advice and the support of their friends. The child could also have a special bond with Ron and Hermione's children, and they could all get into mischief together at Hogwarts.
Well, perhaps a plot twist could be that the magic binding their marriage is somehow linked to an ancient prophecy. This prophecy states that their union will either save or doom the wizarding world. This adds a whole new layer of tension to their wedding day. Also, there could be a plot twist where Ginny's ex - boyfriend shows up and tries to win her back, creating a love triangle - like drama in the middle of the wedding. Or, a magical object that was thought to be a wedding gift turns out to be a powerful and dangerous relic that starts causing trouble at the wedding.