One interesting plot idea could be that they discover they are brothers early on. They then have to deal with the shock of it within the context of the Hogwarts houses. Harry might try to bring Draco closer to his friends, which could lead to some really funny and awkward moments as Draco is used to his Slytherin clique. Another idea is that they work together to uncover secrets about their family, secrets that could change the wizarding world's view of their family's past.
One plot idea could be that they are forced to work together on a school project that requires them to explore each other's family histories. This makes them realize they have more in common than they thought. Another could be that they discover a secret magical realm only they can access together, and in the process, they form a bond. Or perhaps they are both framed for a crime and have to rely on each other to clear their names.
Well, in this type of fanfiction, a possible plot is that Harry is sold due to a powerful curse placed on his family. Draco, who has a change of heart over time, tries to break the curse. This could lead to a journey of self - discovery for both of them. They might also discover secrets about their families' pasts that are intertwined. Also, the situation could force them to work together against a common enemy that emerges because of Harry's new 'ownership' status.
One plot idea could be that they discover their family connection early on. Maybe they find a hidden family tree or an old letter that reveals the truth. This could lead to them having to work together secretly to protect their newfound family bond from the wizarding world's prejudices.
One plot idea could be that they discover their brotherhood early on and train together more closely. They might combine their unique abilities, like Naruto's Rasengan and Sasuke's Chidori, to create new and powerful jutsus. This could change the whole dynamic of the story, with them facing challenges as a united front instead of rivals.
One plot idea could be that Ginny is under the influence of a dark spell which makes her act out against Draco and Harry. This spell could be part of a larger plot by a dark wizard to create chaos in the wizarding world. Another idea is that Ginny has a misunderstanding about Draco and Harry's friendship and wrongly believes they are up to something bad, so she starts bashing them. Maybe she overhears a partial conversation and jumps to the wrong conclusion.
Perhaps they were separated at birth due to some dark wizard's plot. As they grow up, they start to notice strange similarities in their magical abilities and instincts. When they find out they are triplets, they join forces to uncover the mystery behind their separation. They might face many obstacles, like opposition from their respective families who have different beliefs and values. Harry's Gryffindor - like courage, Draco's Slytherin cunning, and Blaise's own unique traits would all play a part in this adventure.
Another plot could involve a family mystery. Maybe they discover a long - lost relative who has a dark secret that endangers them all. They then have to work together to uncover the truth and protect their family. It could involve researching old family records, interviewing people from their past, and facing off against those who want to keep the secret buried.
One plot idea could be that they discover their brotherhood through a magical accident. Maybe a spell goes wrong during a Quidditch match and reveals their hidden family connection. They then have to navigate the wizarding world together, facing both admiration and envy from others.
Perhaps they start off not knowing they are brothers. Harry is at Hogwarts and Percy is at Camp Half - Blood. But then strange things start to happen. They both start having visions of the other's world. Eventually, they meet and find out they share the same father. Then they go on a journey to find out more about their family history and in the process, face challenges from both the wizarding and demigod communities who are against their union.
One plot idea could be the challenges they face in preparing for the baby while also dealing with their duties in the wizarding world. Maybe there are threats from old enemies who see the upcoming birth as an opportunity to strike. Another idea is that they discover some unique magical abilities that the baby might inherit, leading them on a journey to understand more about their family's magical lineage.