It could be the pressure of being 'The Chosen One'. Harry has so much expected of him, and the constant fear of failing in his fight against Voldemort might be overwhelming.
In the fan fiction, Harry's self - harm could be due to a combination of things. The weight of his destiny is a big part. He's constantly in the spotlight, and any mistake he makes could have dire consequences. Moreover, his difficult relationship with some of the teachers, like Snape who has been rather unkind to him, could make him feel unworthy. He might also be haunted by the memories of the traumas he has faced, such as the deaths of those close to him. All these factors together could push him to the point of self - harm as a way to try and deal with the emotional pain that seems to be constantly surrounding him.
Severus might be initially shocked. He could show a rare moment of compassion, as he has his own complex relationship with Harry. He might immediately try to stop Harry from doing it further, perhaps using his Potions knowledge to heal the wounds.
One possible reason could be for the sake of creating intense emotional drama. In fan fiction, such a dark theme might be used to show Harry's inner turmoil. Maybe he's facing a lot of pressure from his fame or the ongoing battle against the dark forces. Draco finding him in this state can then be a turning point in their relationship. It could lead to Draco having a new understanding of Harry and perhaps developing deeper feelings for him as he tries to help Harry through this difficult time.
It could be related to his past traumas. All the battles he's been through, the losses he's suffered, might be weighing on him and he doesn't know how else to deal with the emotional pain.
It could be that Harry, through his kind heart, comes to understand Severus's complex past and motives. He realizes that Severus is not all bad and that there is a deeper connection between them. This new - found understanding and emotional bond drives Harry to save Severus from harm.
It could lead to a more equal relationship. Harry is in a weakened state, and Draco has the power to help. But as he does so, they start to understand each other on a deeper level. Harry may start to see Draco in a new light too, not as the enemy but as someone who truly cares. This mutual understanding and care can form the foundation of a strong romantic relationship.
If Harry finds out Severus is his father in fan fiction, it could completely change the dynamic between them. Harry's view of Severus would shift from hatred or suspicion to a complex mix of emotions. He might start to understand Severus' actions in a new light, like his seeming animosity towards Harry in the original story could be reinterpreted as a father's tough love. This revelation could also change Harry's relationship with the other characters. For example, his connection to the Snape family, if there are any in the fan - made lore, would become significant. It could also impact how he views his mother, Lily, and her relationship with Severus.
The relationship may become more complicated. Severus might struggle with his own emotions. He might feel an urge to protect Harry from this fictional abuse, but at the same time, he has to deal with his long - standing animosity towards Harry. So, it could lead to a very strange and tense dynamic between them, with Severus trying to balance his new - found protectiveness and his old grudges.
Well, it could be about Harry going through a really tough time, like dealing with intense pressure at Hogwarts. Maybe he's being bullied or facing a lot of stress from his studies or the danger that constantly surrounds him, which leads him to self - harm as an outlet for his emotional pain.
One possible reason could be Severus' long - standing grudge against James Potter, Harry's father. Since Severus had a very difficult relationship with James, his hatred might be so deep that it clouds his judgment when it comes to Harry, who is a reminder of James. Another reason could be Severus' loyalty to Voldemort in the past. He might fear that accepting Harry as his son could put him in a difficult position with the Death Eaters or those who still hold onto the old Dark Arts ideology.
Severus might be initially shocked. He could feel a strange sense of protectiveness over Harry, despite their past differences. He might try to find out who wrote the fan fiction and why they depicted such a disturbing scenario.