Harry could also be very hurt. He might start to question what he did wrong and try to talk to Ginny to find out the reason. He might say things like 'Ginny, I don't understand. What have I done?' in an attempt to clear up the situation.
Perhaps there's some external influence on Ginny. Maybe a dark magic spell was cast on her that made her have negative emotions towards Harry. In the wizarding world, there are many powerful spells that can manipulate emotions, and if Ginny was under the effect of such a spell, it could lead to her saying she hates Harry.
Well, Harry could have a range of reactions. He might be a bit scared at first, given his own difficult past. But then the love for Ginny and the thought of their new family could make him determined to be the best father he could be. He might hold Ginny tightly and tell her how much he loves her and that they will face everything together.
Well, it could be that the fanfiction is trying to show Ginny's jealousy or resentment in a new light. Perhaps she's jealous of Harry's fame or the attention he gets. Or maybe the writer is simply exploring a 'what if' scenario where Ginny and Harry's relationship took a different turn from the start. In the original story, they end up together, but fanfiction allows for alternative storylines, and this could be one of them where Ginny hates Harry for various reasons that might be related to their different personalities, goals or the pressure of the wizarding world around them.
He might be initially shocked. Then he would likely feel a mix of joy and worry. The joy of starting a family with Ginny, but worry about the dangerous world they live in and how to protect their child.
They could face financial challenges. Raising a child in the wizarding world can be expensive, especially if they want to give their child the best education at Hogwarts. And Ginny's career as a Quidditch player might be affected by the pregnancy, which could also be a source of stress for them. Moreover, they might have to deal with over - enthusiastic friends and family who want to be too involved in their new family life.
One possible reason could be a creative twist by the author to explore different relationship dynamics. Maybe they want to create conflict and drama. For example, the author might make Harry misunderstand Ginny's actions or intentions, leading to this false sense of hatred in the fan - made story.
It could be that the fanfiction writer wants to create some sort of conflict. By having Harry's kids hate Ginny, it adds a new layer of drama to the story. They might be made to believe false things about Ginny which lead to their hatred.
One characteristic could be a complete deviation from the original story's relationship dynamic. It might also involve a lot of angst and conflict. For example, the fanfiction could focus on how Ginny is affected by Harry's hatred, and how she tries to deal with it.
It's probably not as popular as the more positive, canon - compliant fanfictions. Most fans like to see the characters in relationships that are in line with the original story, so this type of 'hate' fanfiction might have a niche audience.