One possible plot could be that after Cedric survives the Triwizard Tournament, he and Harry grow closer over time. They start to bond over shared experiences at Hogwarts, like their mutual dislike for Umbridge. Their friendship gradually turns into love, and they decide to get married in a small, private ceremony with their closest friends and family from the wizarding world.
Maybe in the fanfic, there is an alternate reality where Cedric doesn't die, and instead, he and Harry are paired together for a special project. Through this project, they discover they have a lot in common, like their sense of justice and loyalty. This connection deepens, and they face challenges together, which ultimately leads to their marriage. For example, they might have to fight against a new dark wizard threat, and in the process, realize their love for each other.
In the 'Harry Marries Cedric' fanfic, it could be that Cedric and Harry start to have strange dreams about each other. These dreams make them curious about their connection. They start to seek each other out, initially just to figure out what's going on. But as they spend more time together, they find they enjoy each other's company. They learn about each other's hopes and fears, and as they support one another through difficult times, like Harry dealing with his past traumas and Cedric with the pressure of being a Hufflepuff star, their relationship blossoms into love and marriage.
One possible plot could be that through some magical time - traveling anomaly, Harry ends up in a different time where he meets Lily before she is with James. They might bond over shared values and a sense of adventure, leading to their marriage. Another plot could involve an alternate universe where the normal relationships are disrupted, and Harry and Lily are brought together by fate to face a great evil together, and in the process, fall in love and marry.
Hermione would likely be a main supporting character. She would be there for Harry, giving him advice about his relationship with Cedric. She might also help them with any magical research or problems they encounter. Ron could also be a supporting character, perhaps at first being a bit confused or skeptical about Harry's relationship with Cedric, but eventually coming around and being supportive, like at their wedding.
One possible plot could be that they discover they are not actually related in a way that was previously thought. Maybe there was a big misunderstanding about their family relations all along. Another could be a story set in an alternate universe where the social norms are different and such a union is somehow acceptable within that fictional world's rules.
One plot twist could be that they have to keep their relationship a secret at first due to the wizarding society's conservative views. Another could be that Voldemort uses their relationship as a way to divide the wizarding community. For example, he could spread false rumors about their union being against wizarding laws.
One possible plot could be that Harry is experimented on by dark wizards who are trying to create a new form of dark magic. They might use his unique magical abilities as a base for their experiments. Another could be that well - meaning but misguided witches and wizards experiment on Harry to find a cure for a deadly magical disease, thinking his famous resilience could hold the key. Or perhaps some alien - like magical creatures capture Harry and experiment on him to understand the human - wizard form better.
Well, it depends on different groups within the fandom. There are some fans who are really into this concept. They might create fan art, write more fanfic stories about it, and engage in discussions. However, there are also those who prefer to stick to the more traditional pairings like Harry and Ginny. But overall, the concept has found its niche in the large and diverse Harry Potter fandom as it provides an opportunity to re - imagine the story in a new and unexpected way.
One possible plotline could be that Harry, being a wizard from the magical world of Harry Potter, somehow gets involved with the dark and supernatural world of Hellsing. His magical abilities might be a source of both intrigue and conflict. Maybe he uses his magic to help the Hellsing organization in their fight against vampires and other dark creatures, and during this process, he falls in love with a character from Hellsing and they get married.
One possible theme could be the exploration of life and death. Since Harry is marrying Death, it might delve into the deeper meaning of mortality and how it relates to the magical world. Another theme could be power. Death in the Harry Potter universe has a certain power, and this could be explored in the relationship with Harry.
One possible plot could be that Harry is captured by Voldemort and his friends have to mount a dangerous rescue mission. They might have to infiltrate Voldemort's stronghold, which could be filled with dark magic defenses.
One possible plot could be that Lily is under some dark magic influence which makes her turn against Harry. Maybe a powerful dark wizard has corrupted her mind, leading her to believe that Harry is a threat to the wizarding world that needs to be eliminated.