Often, the fanfic will show Harry crying while remembering all the good times with Sirius. It might be a flashback of them joking around or Sirius giving Harry some important advice. These memories make his crying even more heart - wrenching as he realizes he'll never have those moments again.
One possible fanfic could be titled 'The Grief of Harry: When Sirius Fell'. In this fanfic, it might show Harry's immediate reaction of shock and disbelief. He might stand frozen as he witnesses Sirius's death, then slowly sink to his knees, tears streaming down his face as he screams in anguish. His world would shatter, and he'd feel a loneliness like never before.
Sirius might immediately rush to Harry and give him a big hug. He's like a father figure to Harry, so physical comfort would be his first instinct.
Sirius often provides emotional support to Harry in fanfics. Since Harry has lost his parents, Sirius, being his godfather, fills that parental role to some extent. He might share stories about Harry's father, which gives Harry a sense of connection and pride. Also, Sirius's skills as a wizard, like his combat abilities, can be used to train Harry or defend him when he's in danger.
It may also divide the fandom a bit. Some fans who are more attached to the original positive and heroic narrative of Harry may not like the idea of him dying in fanfic at all. While others, who enjoy exploring darker and more alternative storylines, might embrace these 'harry potter dies fanfic' and even contribute to creating more similar stories, which can cause some friction between different groups of fans.
Some authors might show it as a moment of vulnerability. Harry, who is often seen as brave, when he cries, it can be a sign that he's just a boy dealing with a lot. So the author may describe his tears as a silent stream running down his face, his eyes red and puffy, while he tries to keep his composure in front of others.
One great fanfic could be 'The Aftermath of Sirius'. It delves deep into how Harry copes with the loss. It shows his internal struggle, his nightmares, and how he tries to find meaning in Sirius' sacrifice. Another is 'Remembering Sirius' which focuses on the memories of Sirius shared among the Order of the Phoenix members. They recall his bravery, his loyalty, and how much he meant to them all. There's also 'Sirius' Legacy' which looks at how Sirius' death impacts the wizarding world at large, not just Harry.
The Lipstick Sirius Veil might be used to drive the conflict in the fanfic. Maybe different characters have different ideas about what the lipstick and the veil combination means. Some might want to use it for good, while others for evil. This creates a power struggle. For instance, if the veil is protecting a powerful magical object, and the lipstick is the key to accessing it, characters will fight over who gets to use the lipstick on the veil. Sirius could be caught in the middle of this struggle, having to choose a side.
Harry might be initially shocked. He could feel a mix of sadness and a sense of responsibility. After all, Sirius was like a father figure to him.
It changes the family dynamics. In the original story, Harry is an orphan with the Dursleys as his guardians. But in this fanfic, with Sirius as his blood - adopted father, he has a more magical and positive family environment from the start.
Harry's character would be shaped by Sirius' values. Sirius values loyalty above all else, and Harry would grow up with a deeper understanding of what it means to be loyal to friends and family. He would also be more in touch with his emotions. Sirius, having suffered so much, would encourage Harry to express his feelings. This would make Harry a more well - rounded and emotionally intelligent character compared to the sometimes stoic Harry in the original series.