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.
No, it's not a popular genre. Most Harry Potter fanfics tend to focus on more traditional themes like his adventures, relationships with friends and enemies, and his growth as a wizard. The idea of Harry giving birth in school is quite unusual and not something that appeals to the general fanfic - reading audience.
I'm not aware of many specific 'Harry gives birth in school' dating fanfic stories as this is a rather unique and not very common concept. However, you could start by looking on popular fanfic websites like Archive of Our Own or Fanfiction.net and use those keywords in the search bar to see if any relevant stories pop up.
Harry's friends would likely be shocked at first. Hermione would probably be the most practical, immediately trying to find books on male pregnancy in the magical world to figure out what to do. Ron might be a bit clumsy in his support but still be there for Harry. Harry's partner would be both excited and scared, constantly by Harry's side.
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.
Perhaps the plot twist could be that Harry is under a powerful curse that makes him believe he is giving birth. In reality, it's a hallucination created by a dark wizard. As he experiences the 'pains' and 'process' of giving birth, his friends have to figure out what's really going on and break the curse. This would add an element of suspense and also show the power of friendship in helping Harry through such a difficult and strange situation.
One idea could be that Artemis has to face unexpected challenges during the birth. Maybe there are threats to the baby from some mythical creatures who see the new life as a potential future enemy. Another could be that the other gods and goddesses react in different ways, some with envy and some with joy.
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.
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 interesting plot idea could be Ginny and Harry going on a magical adventure together while they're dating. Maybe they discover a hidden part of Hogwarts that no one else knows about. Another idea is that they face some challenges from the wizarding community because of their relationship, like some pure - blood families not approving. And they could also have a date at the Quidditch World Cup, which would be really exciting.
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.