In the fanfiction, it might be that the wizarding world is facing a new and terrible threat that only the combined powers of the Potter and Malfoy families can combat. Harry and Draco are initially reluctant but they realize the importance. As they spend more time together, they discover that they have more in common than they thought. Their relationship evolves and, with the help of some ancient magic, they have a son who is destined to be a powerful force in the fight against the new threat.
Well, one way could be through a magical accident. Maybe a spell gone wrong during a battle or some kind of experiment that binds their magic in an unexpected way, leading to the creation of a child. It could also be a result of a forced situation by a dark force that wants to see the two rival families united in a very strange way.
Perhaps in this fanfiction, the two start off hating each other as they did in the original series. But then, as they grow older, they are forced to work together on some important mission for the wizarding world. During this time, they begin to understand each other on a deeper level and feelings develop. Eventually, through some more magical means, they end up having a son. It's a really out - of - the - box idea but that's the beauty of fanfiction.
One way could be through a dark magic spell that was secretly cast long ago. Maybe Voldemort had a plan to create a powerful heir, and he used some complex magic on Harry's mother. In this fanfiction, Harry might struggle with his new identity, feeling torn between the good he was raised with and the dark heritage from Voldemort. He could have inner battles over his natural inclination towards dark magic due to his bloodline, while also trying to resist it because of his friends and the values he learned at Hogwarts.
In a Harry Potter has a son fanfiction, the plot could involve the son inheriting his father's magical abilities and facing new threats at Hogwarts. Maybe he discovers a hidden chamber that holds a powerful and dangerous magic. He might also have to deal with the pressure of being Harry Potter's son, with everyone having high expectations of him.
Draco could start as his usual haughty self, looking down on the pizzeria work. But as he faces challenges like dealing with difficult customers or learning to make pizza properly, he could gradually become more humble. For example, when a customer complains about the pizza being too cold, instead of his usual snappy retort, he tries to fix the problem and learns about customer service.
One way could be through a plot where Harry discovers some long - hidden secrets about Dumbledore that he feels were manipulative. For example, if he found out that Dumbledore had been using him more than protecting him all along. Harry might then confront Dumbledore publicly in the wizarding world, shaming him for his actions.
One way could be to give Harry the Geass power. So, he could use it to control the actions of Death Eaters or Voldemort himself. He might start to make more strategic and calculated moves like Lelouch, using his new power to outwit his enemies. Another aspect could be in the political side. Maybe the wizarding world becomes more like Lelouch's world with different factions vying for power and Harry has to play a political game as well as fight against the dark forces.
The plot could start with Harry having strange dreams about Shinigami. As he investigates, he discovers that there is a hidden portal in Hogwarts that leads to a realm where Shinigami exist. He and his friends enter this realm, and they find out that there is a dark force in the wizarding world that is related to the Shinigami in some way. They then have to work with some friendly Shinigami to stop this dark force. Along the way, they learn about new forms of magic and the true nature of death from the Shinigami.
The plot could start with a spell gone wrong in Hogwarts that somehow transports a group of Transformers to the wizarding world. The wizards are initially scared but soon realize that they need to cooperate with the Transformers to deal with a new dark force that is attracted to the combination of magic and technology. The story could involve battles, magic - tech hybrids, and new friendships between the two groups.
One way could be to have Harry be adopted by a Mandalorian family. He grows up learning both magic and Mandalorian combat skills. Then, he has to use his combined knowledge to fight against a common enemy that threatens both the wizarding world and Mandalore.
In this kind of fanfiction, it might start with Orochimaru's plan to create a powerful heir in a different world. He might use a powerful spell to transfer his essence into James Potter, which results in Harry being born with Orochimaru's traits. Harry could then grow up with an inclination towards dark magic and a different understanding of the wizarding world, constantly struggling between the light side he was supposed to be on and the dark side from Orochimaru.
The son could have a combination of Harry's courage and Draco's cunning. He might inherit Harry's messy black hair but have Draco's piercing grey eyes. His magical abilities could be a unique blend too. Maybe he's excellent at both defensive magic like Harry and potions like Draco.