One way is through exploring their shared experiences. For example, both have had encounters with dark magic in different ways. In fanfiction, this could be the starting point of realizing they are soulmates. Maybe they find that their reactions to these experiences are mirrored in each other, which leads them to suspect a deeper connection.
One possible plot idea could be that Harry and Bill discover their soulmate connection during a battle against dark forces. They start to feel an unexplainable bond that gives them an edge in the fight, as they can almost anticipate each other's moves. Another idea is that they find out through a magical object, like an ancient mirror that shows soulmate pairs. This leads to them having to deal with the shock of it, especially considering the age difference and Bill's previous relationships. They then have to navigate how to keep this newfound connection a secret from others in the wizarding world who might not understand.
One great Bill Weasley and Harry Potter fanfiction is 'The Unseen Bond'. It delves into the relationship between Bill and Harry outside of the main events in the books. It shows how Bill, with his worldly experience, offers unique advice to Harry. Another good one is 'Bill's Influence'. This fic focuses on how Bill's actions in the wizarding world have an indirect impact on Harry's journey. There's also 'Bill and Harry: A Different Perspective' which gives a fresh take on their interactions from the perspective of an overlooked bystander.
One great 'Harry Potter and Bill Weasley Fanfiction' is 'Bill Weasley's Journey'. It delves into Bill's adventures before he gets involved with the main events in the books. It shows his time as a curse - breaker in Egypt and how he acquired his knowledge of dark magic artifacts. Another interesting one is 'Bill and Harry's Bond'. This fic focuses on the relationship between Bill and Harry that is often overlooked in the original series. It explores how Bill becomes a sort of mentor to Harry in some aspects. There's also 'Bill Weasley: The Unseen Hero' which highlights Bill's role during the Battle of Hogwarts in a more detailed way than the books did.
His character might become more nurturing. Bill is already a brave and capable wizard, but raising Harry would add a new layer of responsibility to him. He'd have to be more patient and understanding, as Harry has his own traumas from his past. He might also become more protective, like a father figure.
He might be developed as a protective figure. Given his family's connection to Harry, he could be extremely determined to keep Harry safe. This could lead to him being overprotective at times, causing some tension between him and Harry as Harry wants to prove himself. His protective side could also show his loyalty to his family and friends, which is a key trait of the Weasley family.
In a fanfiction, Bill Weasley's soulmate could be a Muggle - born witch. Bill, being well - traveled and open - minded, is instantly drawn to her unique perspective on the wizarding world. However, this causes some controversy among certain pure - blood families. But Bill doesn't care and he stands up for their relationship, and together they explore different parts of the wizarding world, sharing their knowledge and growing closer as they face the prejudices together.
There's also 'A Different Kind of Friendship'. In this one, the author takes a creative approach to their relationship. It shows their friendship evolving over time, with both characters learning from each other. It also has some cool sub - plots that add depth to the story.
I really like 'Bill Weasley and Harry Potter: A New Friendship'. In this story, they meet under unexpected circumstances and form a strong bond. It shows how Bill's calm and wise nature can balance Harry's impulsive side. Then there's 'When Bill Meets Harry', which starts with a chance encounter and then develops into a deep friendship that has a significant impact on both of their lives and the events in the wizarding world.
Well, in some fanfiction, a writer might portray Bill Weasley as 'sucking' perhaps because they want to create a different or more complex character arc for him. Maybe they have a different view of his actions or relationships within the story. It could also be just a creative choice to add drama or conflict.
Well, it really depends on what you consider 'good'. There are likely some fanfictions with this theme, but the quality can vary greatly. Some might focus more on the emotional aspect of Harry's feelings towards Bill, while others could be more action - packed with this relationship as a side plot. You might also find that different authors have different interpretations of how such a relationship could develop within the magical world of Harry Potter.