One possible plotline could be Harry struggling to keep his pregnancy a secret while still being involved in the war efforts. He might have to deal with the physical and emotional challenges of pregnancy in a dangerous and chaotic environment.
Another plotline could be Harry having to face the reactions of the wizarding community. Some might be supportive, while others could see his pregnancy as a weakness or a distraction during the war. This could lead to internal and external conflicts for Harry and his allies.
Perhaps Naruto and Sakura are sent on a secret mission during the war. They have to infiltrate an enemy stronghold. Along the way, they face many challenges and Naruto has to rely on Sakura's intelligence as much as his own strength. As they get deeper into the mission, they discover a plot that could change the entire course of the war. Their relationship blossoms as they work together to stop this threat.
One possible plotline could be that it's the result of some dark magic gone wrong. Maybe a spell was cast on Harry by an enemy of Snape's to embarrass him, and now they have to deal with the consequences together. Another could be that it's part of a prophecy that no one expected, and they must figure out how it fits into the wizarding world's future.
A plotline might also involve Harry's relationships changing. As a girl, his/her romantic relationships could take a different turn. The pregnancy could add an extra layer of complexity. For example, if there was a previous romantic interest in a female character, that dynamic could shift completely. Also, there could be a sub - plot about how the wizarding society views a pregnant, transformed Harry, and the challenges he/she faces in a world that has certain expectations and norms.
A plotline could involve Harry being on the run due to a false accusation, and during this time, he realizes he's pregnant. He then has to prove his innocence while also dealing with the physical and emotional challenges of pregnancy. There could be a sub - plot where the magical world is in chaos because of his disappearance and the mystery of his pregnancy.
One possible storyline could be Ginny having to hide her pregnancy from the enemy to protect herself and the unborn child. She might rely on the help of her closest friends and family to stay safe.
One possible plotline could be about how Hermione and Luna deal with the unexpected pregnancy in the post - war world. Maybe they face some challenges due to the social norms of the wizarding world.
One possible plotline could be a magical accident that leads to the pregnancy. Maybe a spell gone wrong during a battle or an experiment.
One possible plotline could be how Harry and Ginny deal with the unexpected pregnancy. They might face challenges from their families and friends. Maybe they have to quickly adjust their lives, like Harry taking on more responsibilities to support the family. They could also face some magical complications during the pregnancy that are unique to the wizarding world.
One possible plotline could be that Harry and Cho initially struggle with the news. They might face judgment from their friends and the wizarding community. Harry, being the responsible person he is, would likely try to support Cho through the pregnancy. They could also decide to keep it a secret at first to avoid the chaos it would cause at Hogwarts.
One possible plotline could be Harry and the OC rebuilding Hogwarts together. They might face challenges like finding the right spells and resources to restore the castle to its former glory. Another could be them traveling the wizarding world to help those affected by the war, using their combined skills and knowledge.