It's a story that likely involves the Joker in some sort of dark and perhaps deadly plot within the context of a graphic novel. Usually, the Joker is known for his chaos and mayhem, so this might be about his actions that lead to a lot of destruction or death in the Batman universe.
The significance can be the exploration of different character dynamics. In fan fiction about the Joker's death in the Batman universe, it allows fans to imagine how Batman would be affected. It could show a new side of Batman, perhaps a more conflicted or less morally certain version as he deals with the death of his archenemy.
Most likely Batman and the Joker. Since it's about the Joker's actions in relation to 'death of the family', Batman would be the main hero trying to stop him.
There are many sentences that Joker confesses, and we can find some related sentences. One of the lines read,"My dear Zixia Fairy, since the moment I met you, my world has been lit up by you." Your beauty and kindness have deeply fascinated me. I can't resist my love for you." There was another line,"You are the symbol of my dreams and hopes." The time I spent with you made me feel extremely happy and satisfied." These sentences all expressed Joker's deep love for Zixia Fairy and his praise for her beauty and kindness.
Well, it could be that the Joker discovers Harry's power over death and wants to use it for his own evil schemes. Harry has to fight against the Joker's manipulations while also trying to figure out how to get back to his own world. The story might involve a lot of mind games between the two, with Harry using his magical skills to outwit the Joker at every turn.
Common themes often include the idea of justice. With the Joker dead, does Batman's concept of justice change? Is it more about vengeance now? Also, the theme of legacy is present. How will the Joker be remembered in Gotham? And how will Batman's actions be seen in the context of the Joker's death? Additionally, there's often the exploration of the psychological impact on Batman, such as guilt or a sense of emptiness.
Harry is used to a world of rules and magic, where there are consequences for actions. The Joker thrives on breaking rules and creating chaos. Harry would find the Joker's lack of regard for human life and his unpredictable nature very difficult to deal with. He would try to impose some order and morality on the Joker, which would lead to intense clashes between them. For example, if the Joker was about to harm an innocent, Harry would use his magic to stop him, and this would enrage the Joker who doesn't like being thwarted.
One key event is his chemical accident. It changed his appearance, which was a major factor in his transformation into the Joker. Another is his failed attempts at being a comedian, which led to his mental breakdown. Also, his interactions with the criminal underworld before his full - fledged transformation played a role.