In fanfiction, their soulmate relationship can be a journey of redemption for Snape. Harry, being the more forgiving one, helps Snape come to terms with his past. Their bond is painted as something that defies the odds. It might include scenarios where they protect each other in ways that surprise even themselves. They learn to trust each other completely, which is a big shift from their canon relationship.
In some fanfictions, the idea of Severus Snape and Harry being soulmates is really interesting. It often explores a deeper connection that was not shown in the original books. It could be a connection based on mutual understanding that developed over time, despite their initial animosity.
In fanfic, their relationship can be less hostile. For example, Snape may not be as harsh with Harry in class as he was in the books. He could be more understanding of Harry's situation, especially considering Harry's role in the fight against Voldemort.
The relationship would start off rocky. Snape would be resistant to Harry's kindness as he has always seen Harry as James Potter's son. But Harry's persistent efforts to understand and help Snape would gradually break down Snape's walls.
In some fanfictions, Snape's relationship with Harry is shown as more of a father - son relationship. For example, in 'A Different Kind of Bond', Snape takes Harry under his wing early on, and they develop a mutual respect. This is very different from the strained relationship in the books.
Another way is if there was a magical accident that forces Harry and Snape to rely on each other. For example, they are trapped in a magical realm where only by combining their unique magical abilities can they escape. During this time, they have to put aside their differences and work together. Harry learns about Snape's past traumas and Snape sees Harry's courage and determination up close, which changes their relationship for the better.
It would be extremely complex. Harry might initially be in disbelief and struggle to accept Snape as his father. Snape, on the other hand, would probably be very strict but also deeply protective in his own way.
The Dark Mark on Snape in fanfiction can be a key plot device. It might be used to create tension in a story. For example, if other characters discover it, they may question his true allegiance. Writers often explore how Snape deals with the stigma associated with the mark. He could be shunned by some in the wizarding community because of it, and this can lead to interesting character development as he tries to prove himself.
Often, James is shown as either the bully he was in the books or as a more nuanced character who has grown past his school - day flaws. Fanfiction can give him a chance to redeem himself in Snape's eyes. Snape, on the other hand, is usually portrayed as the long - suffering victim of James' bullying, but also as a complex character with his own motives and secrets.
His relationship with Dumbledore would also be transformed. Harry might be more suspicious of Dumbledore's actions in the past, especially if he discovers things about his mother that Snape knew all along. He could question Dumbledore's motives more deeply and not be as blindly trusting as in the original series. This could lead to a more strained relationship between them, at least initially, as Harry tries to figure out the truth about his family and Dumbledore's role in it.
At first, it's likely to be full of tension. Harry may be hesitant and even a bit resentful about the marriage, while Severus is his usual cold self. But as time passes, they start to see each other's good sides. Harry realizes Severus's intelligence and Severus sees Harry's courage in a new light.