In this fanfiction, the story might start with Harry Potter on a mission related to the Black family secrets. He meets this Black fan who has her own insights into the family's history. As they work together to uncover the truth, they find themselves attracted to each other. Their relationship could face many challenges, like the prejudice still existing in the wizarding world towards the Blacks. But through their love and determination, they overcome these and get married, bringing a new era of unity between different wizarding groups.
Well, perhaps it could involve Harry Potter breaking away from the traditional wizarding world norms. Maybe he meets a Black family member who is a strong and independent witch. They could bond over their shared experiences of dealing with the dark side in different ways. Their relationship might start with mutual respect and admiration, which then blossoms into love.
One possible plot could be that in this fanfiction, the Black character is an outcast within her own family due to her different beliefs. Harry Potter, being someone who has always been an outsider in some ways, relates to her. They come together to fight against the remnants of Voldemort's supporters and in the process, fall in love and decide to get married. It could also show how their union affects the wizarding community's perception of the Black family.