Another idea might be the nature of the cubs. Are they part human, part magical creature? And how do they inherit Harry's traits and powers? This could lead to many adventures as Harry raises them.
His friends like Hermione and Ron could also be important characters. Hermione might use her intelligence to help Harry during the pregnancy and after the birth, while Ron could provide some comical relief with his typical reactions.
In this fanfiction, perhaps it could lead to a whole new set of adventures for Harry Potter. He might have to raise these pups in a world full of dark magic threats, adding a new layer of challenges to his story. And it could also change his relationships with his friends, like Hermione and Ron, as they might have different opinions on this strange event.
One plot idea could be that Harry is cursed by a dark wizard. The curse is designed to humiliate him by making him go through an unusual form of 'pregnancy'. As he nears the time to give birth, he discovers that the kittens have some special powers that could be used either for good or bad, depending on how they are raised.
Perhaps in this fanfic, Harry's pregnancy is a result of an ancient magic related to a deep emotional bond in their dating relationship. The story could revolve around how they balance their studies, their relationship, and the upcoming birth. They might seek help from a wise teacher who has knowledge of such rare magic.
One plot idea could be Mal facing challenges in adjusting to motherhood while still dealing with her past as a villain. Maybe she struggles to balance protecting her child from the dark side she once knew and teaching them about their unique heritage. Another could be the reactions of her friends from the Isle of the Lost and Auradon. Do they support her fully, or are there some who are skeptical? And a third idea is that the baby has some sort of special power that attracts both good and bad forces, forcing Mal to make difficult decisions to keep the baby safe.
One interesting idea could be a special magical connection between Harry and Ginny that was formed at their births. Maybe it gives them an instinctive understanding of each other. For example, they can sense each other's emotions even from a distance. Another idea might be that this birth bond is related to some ancient magic prophecy. It could be that their union is fated not just because of their love but also due to this special bond that has been there since their very first day.
One interesting aspect could be the exploration of Padme's emotions during the birth. In fanfiction, authors might delve deep into her fear, joy, and anticipation all at once. Maybe she has premonitions about the future of her child in some stories.
One possible plotline could be that Harry discovers he has a unique magical ability that allows him to give birth, and he has to go through the process alone in a secret place to protect his unborn child from dark forces. Another could be that he is magically cursed to give birth alone as part of a villain's revenge plot.
One interesting 'Harry Potter gives birth' fanfiction could be the one where it's a magical accident that leads to the situation. It adds a whole new layer of magic and mystery to the story. Another might be where it's a result of a powerful spell gone wrong. There could also be fanfictions that explore how the wizarding world reacts to such an event, which can be really fascinating.
One plot idea could be that Harry gives himself to Voldemort in an attempt to understand the Dark Lord's mind and find a weakness from within. Another could be that he sacrifices himself this way to protect his friends and Hogwarts, believing that there's a way to turn Voldemort's victory into a defeat from the inside. Or perhaps Harry has a vision that shows this as the only way to truly end the war and he decides to take the risk.