After Sirius' death in fanfiction, Harry's character can go through a significant transformation. He could become more cynical about the wizarding world in general. The unfairness of Sirius being taken away from him so brutally makes him view the Ministry of Magic and other institutions with more suspicion. His sense of loneliness deepens, and he might have nightmares more frequently. He may also develop a stronger sense of vengeance towards Voldemort, seeing his fight against the Dark Lord not just as a heroic duty but also as a personal vendetta for taking Sirius from him.
Well, often Harry in fanfiction after Sirius' death is seen as being more determined. Sirius was like a father figure to him, and his death makes Harry realize how dangerous Voldemort really is. So, he may focus more on his studies of magic, especially defensive magic. He might also start to question the Order of Phoenix's strategies more, as he thinks they failed to save Sirius. His relationships with his friends could change too. He might push them away at first because he doesn't want to see them get hurt like Sirius did.
In many fanfictions, Harry becomes more withdrawn after Sirius' death. He might lose his trust in the adults around him more easily, feeling that they couldn't protect Sirius, so he tries to be more self - reliant. He also could become more brooding and angry, his emotions more volatile as he grapples with the sudden and tragic loss.
In some fanfictions, Harry's friends might take on more of a protective role. They see how broken Harry is after Sirius' death and they become more vigilant about his safety. They might also encourage him to open up more about his feelings. Harry, on the other hand, could initially resist their efforts but eventually come to appreciate their friendship more as he realizes they are just trying to help him through this tough time.
After Sirius dies, Harry is in a really tough place. He feels like a part of his family has been ripped away. He may start to question his own actions that led to Sirius being in the Department of Mysteries in the first place. Harry will also feel a sense of loneliness, even with his friends around. But over time, he'll remember the lessons Sirius taught him, about being brave and standing up for what's right. This will give him the strength to move forward, and he'll use his memories of Sirius as a source of motivation in his fight against Voldemort.
In some fanfictions, Harry becomes more determined to fight against Voldemort. He channels his grief into training harder and becoming a stronger wizard. He often has flashbacks of Sirius which fuel his anger towards the Death Eaters and Voldemort, seeing them as the root cause of his loss.
It deepens their connection. They become more in tune with each other's feelings. For instance, if Harry is sad, Sirius can sense it and vice versa. This makes their relationship more empathetic.
The relationship could also take a more complex turn. Other characters might get involved in their conflict. Some might side with Sirius, thinking Harry was in the wrong, while others might try to mediate. This outside influence could either help or hinder the mending of their relationship, depending on how it's handled in the fanfic.
Well, Harry would likely be more confident. With Sirius around, he has a strong male figure who believes in him wholeheartedly. This would make Harry bolder in his actions and decisions.
One common change is that he becomes moodier. The loss of Sirius is a huge blow, and he may swing between being extremely sad and angry. Another change could be that he is less likely to take risks without thinking. Sirius' death makes him more cautious as he realizes the consequences of recklessness.
The relationship could become strained. Sirius might start to view Harry differently, with a bit of wariness. He might not trust Harry as much as before in terms of making good decisions. But it could also lead to a more open relationship where they talk about things they previously avoided, like relationships and feelings.
Well, at first, Sirius would be in a state of shock and panic. But then he'd have to step up. Their relationship would shift from one of equals (in a sense, as Harry was growing up) to a caretaker - cared - for dynamic. Sirius would have to learn about Harry's likes and dislikes as a baby. He'd sing lullabies to him, comfort him when he cries. This new experience would make their bond stronger in a very different way. Harry might not remember all of it when he's turned back, but there would be a subconscious change in how he feels towards Sirius, a deeper sense of security and love that stems from those baby - days when Sirius was his whole world.
Well, it can completely shift the power dynamics. A female Harry might rely on Sirius in different ways compared to the original male Harry. And this can lead to different plot developments. For instance, their adventures together might be more focused on building a community or a different kind of magical discovery because of her different approach.