Hisoka in yandere fanfiction might also display a jealous streak. If he sees the reader interacting with someone else, he could become very agitated and might even start to plan ways to remove that person from the picture. His actions are often unpredictable and a bit on the crazy side, which is typical of a yandere character. For instance, he might give a chilling smile to the person who is talking to the reader, a warning sign of his impending wrath if they don't back off.
First, you need to create a well - developed OC. Decide on their personality traits, especially the ones related to possessiveness. Are they jealous easily? Do they have a strong sense of ownership? Then, think about the relationship with Hisoka. How did they meet? What draws them to Hisoka? After that, plot out the story. For the possessive part, you can have the OC react strongly to any perceived threat to their relationship with Hisoka. For example, if another character flirts with Hisoka, the OC could glare at them or even start a small confrontation.
To write a compelling fanfiction, start with a strong hook. For example, open with a scene where the OC is in the middle of a blood - thirsty rage. Then, develop the relationship between the OC and Hisoka. Their interactions should be complex and unpredictable. You can also add some mystery to the OC's bloodlust. Maybe there's a hidden power that only activates when their bloodlust reaches a peak. And make sure to write in a way that captures the essence of the Hunter x Hunter world, with its unique powers and characters.
In some fanfictions, Gon might initially be shocked. He has seen Hisoka as a somewhat eccentric but strong ally. When he discovers Hisoka's more sinister side, like his love for fighting to the death and his disregard for normal moral boundaries in battle, Gon could be conflicted. He might feel a sense of betrayal because he thought Hisoka was more on the side of 'good' in their adventures. However, Gon's own sense of justice and his unwavering belief in his friends could lead him to confront Hisoka about his true nature.
Hisoka fanfic often focuses on his unpredictable nature. Hisoka is a complex character, so many fanfics explore his motives and desires. For example, some fanfics might dig into why he is so obsessed with strong opponents.
Hisoka is still alive in the manga. The storylines haven't led to his death yet. Maybe there'll be developments in the future, but for now, he's kicking.